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WorksheetsUnit 1 - 4 AP Bio Review
Total questions: 210
Worksheet time: 2hrs 19mins
Which of the following does not result from hydrogen bonding in water molecules?
Cohesion
Adhesion
Surface Tension
Dissolving fats
Why is water considered polar?
Nonpolar covalent bonds in structure
Ionic bonds in structure
Polar covalent bonds in structure
Hydrophobic interaction in structure
Which macromolecule(s) have nitrogen?
Carbohydrates
Proteins
Nucleic Acids
Nucleic Acids & Proteins
Which macromolecule(s) have phosphorus?
Carbohydrates
Proteins
Nucleic Acids
Fats
Which macromolecule(s) have sulfur?
Carbohydrates
Proteins
Nucleic Acids
Fats
Describes the forming of a bond between monomers with the removal of a water molecule.
Hydrolysis
Dehydration
Describes the breaking of a bond within a polymer using water.
Hydrolysis
Dehydration
Which of the following is NOT in the monomer of a nucleic acid?
pentose sugar
nitrogenous base
phosphate
amino acid
Which of the following is NOT in the monomer of a protein?
Amine Group
R Group
Carboxyl Group
Nitrogenous Base
Describe the orientation of the phospholipids in the membrane.
Phospholipids orient in bilayer with hydrophilic heads on exterior
Phospholipids orient in monolayer with hydrophilic head on extracellular
Phospholipids orient in bilayer with hydrophobic tails on exterior
Phospholipids orient in monolayer with hydrophobic tails on extracellular
How is DNA/RNA synthesis directionally oriented?
new nucleotides are added to 5' phosphate
new nucleotides are added to 3' phosphate
new nucleotides are added to 5' hydroxyl
new nucleotides are added to 3' hydroxyl
Identify the pairing and number of bonds in DNA double helix
A pairs with T (2 bonds) & G pairs with C (3 bonds)
A pairs with G (2 bonds) & T pairs with C (3 bonds)
A pairs with T (3 bonds) & G pairs with C (2 bonds)
A pairs with G (3 bonds) & T pairs with C (2 bonds)
What component of the polypeptide is the next amino acid added forming the peptide bond?
amino group
hydrogen
carboxyl group
R groups
Which protein involves R group bonding to form the final three dimensional structure?
primary
secondary
tertiary
quaternary
Which protein structure involves the peptide bonds between amino acids?
primary
secondary
tertiary
quaternary
DNA and RNA differ on many qualities, which of the following is NOT a difference?
Sugar
Nitrogenous Base
Phosphate Group
Strandedness
Describe the difference between rough ER and smooth ER.
Rough ER compartmentalizes cell; Smooth ER functions in detox and lipid synthesis
Rough ER functions in ribosome synthesis; Smooth ER functions in lipid synthesis
Rough ER functions in detox and lipid synthesis; Smooth ER compartmentalizes cell
Rough ER functions in lipid synthesis; Smooth ER functions in ribosome synthesis
Which organelle is a membrane-bound structure that functions in correct folding/chemical modification of proteins?
Golgi complex
Lysosome
Mitochondria
Chloroplast
Which is membrane-enclosed sacs that contain hydrolytic enzymes?
Golgi complex
Lysosome
Mitochondria
Chloroplast
Which is responsible for storage and release of macromolecules and cellular waster products. In plants, aids in turgor.
Endoplasmic Reticulum
Lysosome
Mitochondria
Vacuoles
Which of the following is the location for the light-dependent reactions?
grana/thylakoid membrane
matrix
stroma
cristae
Which of the following is the location for the Krebs cycle?
grana/thylakoid membrane
matrix
stroma
cristae
Which of the following is the location for the ATP synthesis in cellular respiration?
grana/thylakoid membrane
matrix
stroma
cristae
Which of the following is the location for the ATP synthesis in photosynthesis?
grana/thylakoid membrane
matrix
stroma
cristae
Describe the relationship between cell size and SA:V ratios.
As cells increase in size, the SA:V ratio increases
As cells decrease in size, the SA:V ratio decreases
As cells increase in size, the SA:V ratio decreases
Cell size has no effect on the SA:V ratio
Describe the characteristics of a membrane-bound protein.
Entire protein is hydrophilic
Entire protein is hydrophobic
Hydrophilic R group exterior cell & hydrophobic R group interior membrane
Hydrophilic R group interior membrane & hydrophobic R group interior cell
Identify which of the following will easily pass through the membrane.
Water
Protein Hormone
Steroid Hormone
Charged Ion
Identify which of the following will bind to a membrane protein (and will not enter the cell).
Water
Protein Hormone
Steroid Hormone
Charged Ion
Which of the following requires an input of energy for membrane transport?
Charged ion moving against concentration gradient
Water moving into a hypertonic cell
Charged ion moving with concentration gradient
Water moving out of a hypotonic cell
What is the difference between endocytosis and exocytosis?
Endocytosis involves cytoplasm of a neighboring cell entering
Endocytosis involves phagocytosis or pinocytosis to bring materials in cell
Exocytosis involves cytoplasm of a neighboring cell exiting
Exocytosis involves phagocytosis or pinocytosis to remove material from cell
Which of the following correctly describe the movement of water?
Cell with 0.5M concentration will gain water from the 1.0M exterior solution
Cell with 0.5M concentration will gain water from the 0.5M exterior solution
Cell with 1.0M concentration will gain water from the 0.5M exterior solution
Cell with 0.5M concentration will lose water to the 0.5M exterior solution
Why is a eukaryotic cell able to be larger than a prokaryotic cell?
Membrane-bound organelles compartmentalize intracellular processes
Prokaryotic cells have a nucleus which decreases the volume of the cell
Eukaryotic cells have a nucleus which decreases the volume of the cell
Absence of membrane-bound organelles allows for enzymatic reactions.
If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membranes is also inhibited?
Movement of oxygen into a cell
Movement of water through aquaporins
Passage of a solute against its concentration gradient
Facilitated diffusion of a permeable substance
A common laboratory investigation involves putting a solution of starch and glucose into a dialysis bag and suspending the bag in a beaker of water, as shown in the figure below.
The investigation is aimed at understanding how molecular size affects movement through a membrane.
Which of the following best represents the amount of starch, water, and glucose in the dialysis bag over the course of the investigation?
Cystic fibrosis is a recessively inherited disorder that results from a mutation in the gene encoding CFTR chloride ion channels located on the surface of many epithelial cells. As shown in the figure, the mutation prevents the normal movement of chloride ions from the cytosol of the cell to the extracellular fluid. As a consequence of the mutation, the mucus layer that is normally present on the surface of the cells becomes exceptionally dehydrated and viscous.
An answer to which of the following questions would provide the most information about the association between the CFTR mutation and the viscous mucus?
Is the mucus also secreted from the cells through the CFTR proteins?
How does the disrupted chloride movement affect the movement of sodium ions and water by the cell?
How does the mutation alter the structure of the CFTR proteins?
What is the change in nucleotide sequence that results in the CFTR mutation?
You are a farmer growing crops. The concentration of your potatoes are 0.35M and you are advised to water your plants with a 0.35M saline solution to provide nutrients. What happens to the plant cells?
Cells are normal since this is an isotonic solution.
Cells become flaccid since this is an isotonic solution.
Cell become plasmolyzed since this is an isotonic solution.
You are a doctor. A patient comes in dehydrated. What type of solution would be best to place into their IV?
A hypotonic solution to allow the cells to rehydrate.
A slightly hypertonic solution to allow the cells to rehydrate.
An isotonic solution to increase fluid in the body without causing harm to the cells.
An isotonic solution to decrease fluid in the body without causing harm to the cells.
Which of the following describes an appropriate water movement pathway?
hypotonic solution to hypertonic solution
hypertonic solution to hypotonic solution
hypertonic solution to isotonic solution
isotonic solution to hypotonic solution
What is the difference between the molecule transported in facilitated diffusion versus simple diffusion?
facilitated diffusion involves nonpolar solute transport through a membrane protein
simple diffusion involves nonpolar solute transport through a membrane protein
facilitated diffusion involves polar solute transport through a membrane protein
simple diffusion involved polar solute transport through a membrane protein
Which of the following describes the difference between passive and active transport?
passive transport involves moving solutes against the concentration gradient using ATP.
active transport involves moving solutes against the concentration gradient using ATP.
passive transport involves moving solutes with the concentration gradient using ATP.
active transport involves moving solutes with the concentration gradient using ATP.
Which of the following describes the difference between channel and carrier transport proteins?
channel proteins bind to solute to shuttle the solute across the membrane
channel proteins provide a nonpolar channel through the membrane
carrier proteins bind to solute to shuttle the solute across the membrane
carrier proteins provide a nonpolar channel through the membrane
Describe what would happen if you placed an animal cell in 1.0 M solution.
The cell would lyse
The cell would be flaccid
The cell would shrivel
The cell would be normal
Describe what would happen if you placed a plant cell in a 0.0 M solution.
The cell would lyse
The cell would be turgid
The cell would plasmolyze
The cell would be flaccid
What organelle found in a plant cell provides the plant cell with turgid pressure?
Rough ER
Golgi Bodies
Central Vacuole
Lysosome
What property of the plasma membrane allows for oxygen and carbon dioxide to diffuse by simple diffusion?
Phospholipids are nonpolar allowing for small, nonpolar substances to dissolve.
Phospholipids are polar allowing for small, polar substances to dissolve.
Phospholipids are amphipathic allowing for a nonpolar interior for nonpolar substances to diffuse.
Phospholipids are amphipathic allowing for polar interior for polar substances to diffuse.
Cystic fibrosis is a genetic condition that is associated with defects in the CFTR protein found in the membrane. Which organelle synthesized the protein?
Golgi Bodies
Rough ER
Smooth ER
Lysosome
Cystic fibrosis is a genetic condition that is associated with defects in the CFTR protein found in the membrane. After being synthesized, where does it go to be modified, packaged, and sorted?
Golgi Bodies
Rough ER
Smooth ER
Lysosome
The following data was collected by observing subcellular structures of three different types of cells. How can you determine these are eukaryotic cells?
They have ribosomes.
They have membrane bound organelles.
They have DNA.
The have a plasma membrane.
The following data was collected by observing subcellular structures of three different types of eukaryotic cells. Identify a function of cell X.
Detoxification.
Secretion of Proteins.
Mobility.
Storage.
The following data was collected by observing subcellular structures of three different types of eukaryotic cells. Identify a function of cell Y.
Detoxification.
Secretion of Proteins.
Mobility.
Storage.
The following data was collected by observing subcellular structures of three different types of eukaryotic cells. Identify a function of cell z.
Detoxification.
Secretion of Proteins.
Mobility.
Storage.
How does the location of the ribosome affect the type of protein product?
free ribosomes synthesize cytosolic proteins while bound ribosomes synthesize membrane proteins
free ribosomes synthesize membrane proteins while bound ribosomes synthesize cytosolic proteins
free ribosomes synthesize proteins for the mitochondria while bound ribosomes synthesize cytosolic proteins.
free ribosomes synthesize cytosolic proteins while bound ribosomes synthesize proteins for the mitochondria.
Where is the mRNA used for synthesis of proteins made?
nucleus
ribosome
rough ER
smooth ER
What organelle is responsible for storing calcium?
lysosome
smooth ER
rough ER
Golgi Bodies
Tay Sachs results from a build-up of fats due to an error in which organelle that is responsible for digesting macromolecules?
rough ER
smooth ER
lysosome
Golgi Bodies
Where on an enzyme does the substrate bind?
active site
allosteric site
C-terminus
N-terminus
Describe the effect on the free energy of doubling the amount of enzyme.
double the free energy
half the free energy
triple the free energy
no effect on free energy
Which structure is unaffected by denaturation?
Primary
Secondary
Tertiary
Quaternary
Which environmental conditions can cause denaturation of the enzyme?
slight increase in temperature
extreme increase in temperature
decrease in temperature
extreme increase in temperature and pH changes
Which of the following will increase the rate of the reaction?
increase product
increase substrate
increase inhibitor
increase enzyme
Describe why an increase in temperature increases the rate of the reaction.
increase in temperature increases the speed/kinetic energy of particles
increase in temperature activates more enzyme to increase the rate
increase in temperature results in increase in substrate available
increase in temperature allows for a tighter fit in the active site
Describe the difference between competitive and noncompetitive inhibitors.
noncompetitive binds to active site and competitive binds to other site
competitive binds to active site and noncompetitive binds to other site
competitive is irreversible and noncompetitive is reversible binding
noncompetitive is irreversible and competitive is reversible binding
In order to maintain order and power cellular processes,
energy input must exceed energy loss
energy input equals energy loss
energy loss must exceed energy input
energy loss equals energy input
What is the process of an endergonic reaction being fueled by an exergonic reaction called?
second law of thermodynamics
energy coupling
first law of thermodynamics
endergonic/exergonic switch
Where did photosynthesis first evolve?
prokaryotic organisms
alien organisms
eukaryotic organisms
abiotic processes
What are the products of the light-dependent reactions of photosynthesis?
ATP & NADH
CO2 & H2O
NADPH & ATP
Organic Compounds & O2
What is the function of the electron transport chain between Photosystem II and Photosystem I?
establish electrochemical gradient of protons
to funnel electrons into photosystem I for the Calvin cycle
transport electrons to oxygen to make water
to synthesize ATP using ATP synthase
Where does the Calvin cycle take place?
thylakoid membrane
cristae
stroma
matrix
Where does the electron transport chain take place?
chloroplasts
prokaryotic plasma membrane
mitochondria
all of the choices
Which of the following are electron carriers for the electron transport chain in cellular respiration?
NADPH
FADH2
NADH
NADH & FADH2
Which process releases energy in glucose to form ATP, NADH, and pyruvate?
Glycolysis
Oxidative Phosphorylation
Krebs Cycle
Fermentation
What is oxidation?
loss of electrons
loss of water
gain of electrons
gain of water
In the electron transport chain of cellular respiration, where is the electrochemical gradient of protons generated?
cytosol
cristae
matrix
intermembrane space
Which process does NOT require oxygen?
Glycolysis
Oxidative Phosphorylation
Krebs Cycle
Aerobic respiration
Describe the pathway of electrons in the light reactions.
H2O → PSI → ETC → PSII → NADPH
H2O → PSII → ETC → PSI → NADPH
H2O → PSII → ETC → PSI → NADH
H2O → PSI → ETC → PSII → NADH
In 1944 Avery, MacLeod, and McCarty performed transformation experiments using live, harmless bacteria and extracts from virulent bacteria treated with various enzymes. Which of the following enzymes were used and why?
Proteases and RNases to rule out protein and RNA as the transforming factors
Lipase (an enzyme that facilitates the breakdown of lipids) to rule out lipoproteins as the transforming factor
Kinase (an enzyme that facilitates transfer of a phosphate group from ATP to a substrate molecule) to show that transformation is phosphorylation dependent
ATPase to show that transformation is not dependent on ATP
A student in a biology class crossed a male Drosophila melanogaster having a gray body and long wings with a female D. melanogaster having a black body and apterous wings. The following distribution of traits was observed in the offspring.
Which of the following is supported by the data?
The alleles for gray body and long wings are dominant.
The alleles for gray body and long wings are recessive.
Genes for the two traits are located on two different chromosomes, and independent assortment occurred.
Genes for the two traits are located close together on the same chromosome, and crossing over occurred between the two gene loci.
If chemical signals in the cytoplasm control the progression of a cell to the M phase of the cell cycle, then fusion of a cell in G1 with a cell in early M phase would most likely result in the
replication of chromosomes only in the G1 cell
exiting of both cells from the cell cycle and into the G0 phase
condensation of chromatin in preparation of nuclear division in both cells
transfer of organelles from the G1 cell to the cell in the M phase
Phase involving sister chromatids aligning on plate in middle of cell
Anaphase
Metaphase
Prophase
Telophase
Phase involving pairing of sister chromatids and condensation of chromatin into chromosomes
Anaphase
Metaphase
Prophase
Telophase
Which checkpoint involves ensuring all microtubules are attached to kinetochores?
G1
G2
M
S
Which checkpoint involves determining whether the cell should divide?
G1
G2
M
S
Which of the following occurs BEFORE the process of mitosis?
Sister chromatids pair up
DNA is replicated
Chromatin is condensed to chromosomes
Cytoplasm is divided between two cells
Which of the following describes the order of processes in the cell cycle?
Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
Prophase, Metaphase, Interphase, Anaphase, Telophase, Cytokinesis
Interphase, Metaphase, Anaphase, Prophase, Cytokinesis, Telophase
Prophase, Anaphase, Metaphase, Interphase, Cytokinesis, Telophase
Which of the following describes the result of mitosis?
2 identical, haploid cells
4 non-identical haploid cells
2 identical, diploid cells
4 non-identical, diploid cells
In a monohybrid cross of complete dominance, what is the phenotypic ratio?
1:2:1
3:1
9:3:3:1
12:4
In a monohybrid cross of incomplete dominance, what is the phenotypic ratio?
1:2:1
3:1
9:3:3:1
12:4
In a dihybrid cross of complete dominance, what is the phenotypic ratio?
1:2:1
3:1
9:3:3:1
12:4
In a population of 100 offspring, how many would you expect to be homozygous dominant in a cross between a homozygous dominant and a homozygous recessive?
0
25
50
75
100
In a population of 200 offspring, how many would you expect to be homozygous recessive in a cross between a heterozygous and a homozygous recessive?
0
50
100
150
200
In a cross between a white (recessive) and red (dominant), what is the probability of a pink offspring?
0%
25%
50%
75%
100%
In a cross between a white, terminal (recessive) and red, axial (dominant), what is the probability of a red, axial offspring?
1/16
3/16
9/16
16/16
In a cross between an individual with A blood and an individual with B blood, what is the probability of an offspring with O blood?
0/4
1/4
1/2
3/4
4/4
In a cross between two roan cows, what is the probability of a white cow?
0/4
1/4
1/2
3/4
4/4
Identify which of the following descriptions about dominance are correct
Incomplete dominance involves the homozygous dominant and heterozygous looking the same.
Incomplete dominance involves the heterozygous offspring resulting in an intermediate between the two dominant traits.
Codominance involves the heterozygous offspring resulting in an intermediate between the two dominant traits
Codominance involves the homozygous dominant and heterozygous looking the same.
Griffith investigated R and S strains with mice. What did he conclude about the S strain and the R strain in the trial with heat-killed S strain and living R strain?
The mouse lived as the R strain provided protection from the nonliving S strain.
The mouse died as the R strain did not provide protection from the nonliving S strain.
The mouse lived as the R strain was not affected by a transforming agent released from the nonliving S strain.
The mouse died as the R strain was affected by a transforming agent released from the nonliving S strain
What was the difference between the R and S strains in the Griffith experiment?
R strain was pathogenic while S strain was not pathogenic
R strain was not pathogenic while S strain was pathogenic
R strain had antibodies against the S strain
S strain had antibodies against the R strain
What feature did Hershey and Chase use to differentiate between the protein and nucleic acid in their experiment?
Proteins have phosphorus and Nucleic acids have sulfur
Proteins have sulfur and Nucleic acids have phosphorus
Proteins are single stranded and Nucleic acids are double stranded
Proteins are double stranded and Nucleic acids are single stranded
What technology did Rosalind Franklin use to produce the image of the DNA molecule used by Watson & Crick?
X-ray crystallography
Electron microscope
Light microscope
NMR
Based on the conservative model, what are the predicted results from two rounds of replications in the Meselson-Stahl experiment where the initial strands are 15N and the new strands are 14N?
The first round involves a hybrid (14N-15N) band, the second round involves a light (14N) band and a hybrid (14N-15N) band
The first round involves a hybrid (14N-15N) band, the second round involves a hybrid (14N-15N) band
The first round involves a heavy (15N) band and a light (14N) band, the second round involves a hybrid (14N-15N) band.
The first round involves a heavy (15N) band and a light (14N) band, the second round involves a heavy (15N) band and a light (14N).
Based on the semiconservative model, what are the predicted results from two rounds of replications in the Meselson-Stahl experiment where the initial strands are 15N and the new strands are 14N?
The first round involves a hybrid (14N-15N) band, the second round involves a light (14N) band and a hybrid (14N-15N) band
The first round involves a hybrid (14N-15N) band, the second round involves a hybrid (14N-15N) band
The first round involves a heavy (15N) band and a light (14N) band, the second round involves a hybrid (14N-15N) band.
The first round involves a heavy (15N) band and a light (14N) band, the second round involves a heavy (15N) band and a light (14N).
Based on the dispersive model, what are the predicted results from two rounds of replications in the Meselson-Stahl experiment where the initial strands are 15N and the new strands are 14N?
The first round involves a hybrid (14N-15N) band, the second round involves a light (14N) band and a hybrid (14N-15N) band
The first round involves a hybrid (14N-15N) band, the second round involves a hybrid (14N-15N) band
The first round involves a heavy (15N) band and a light (14N) band, the second round involves a hybrid (14N-15N) band.
The first round involves a heavy (15N) band and a light (14N) band, the second round involves a heavy (15N) band and a light (14N).
Which of the following did Watson & Crick determine from the image provided by Rosalind Franklin of DNA?
approximate width of the DNA molecule
length of one turn of the DNA molecule
number of nucleotides in the DNA molecule
nitrogenous bases order in the DNA molecule
What information did Chargaff provide to Watson and Crick to aid in their understanding of base pairing?
adenine pairs with thymine and guanine pairs with cytosine.
adenine pairs with guanine and thymine pairs with cytosine.
adenine pairs with cytosine and guanine pairs with thymine.
adenine pairs with adenine and thymine pairs with thymine.
Which scientist(s) conclusively proved that DNA was the genetic material for organisms?
Chargaff
Watson & Crick (+ Rosalind Franklin)
Griffith
Hershey & Chase
Meselson & Stahl
Rosalind Franklin’s x-ray diffraction images taken in the 1950s most directly support which of the following claims about DNA?
The ratios of base pairs are constant.
The nucleotide sequence determines genetic information.
The two strands of DNA are antiparallel.
The basic molecular structure is a helix.
A new mutation that arose in one copy of gene X in a somatic cell resulted in the formation of a tumor. Which of the following pieces of evidence best describes how the new mutation directly caused the tumor?
Protein X normally stimulates cell division, and the mutation created an overactive version of protein X.
Protein X normally activates a growth hormone receptor, and the mutation decreased the stability of protein X.
Protein X normally prevents passage through the cell cycle, and the mutation created an overactive version of protein X.
Protein X normally regulates gene expression, and the mutation created an underactive version of protein X that blocked the cell cycle.
Which of the following is the best justification for why the rabbit hemoglobin proteins were found throughout the tadpole?
Rabbit mRNA is composed of nucleotides that are more stable than those in frog mRNA.
Rabbit hemoglobin is synthesized more efficiently than frog hemoglobin in frog cells.
After differentiation, the rabbit hemoglobin proteins move through the circulatory system of the tadpole to every cell.
The mRNA injected into the newly fertilized frog eggs is distributed in the cytoplasm of every daughter cell during cell division.
Possessing a single copy of the HbS allele has been shown to provide some resistance to infection by Plasmodium falciparum, the parasite that causes malaria. Which of the following individuals represented in the pedigree would have the greatest selective advantage in an area where malaria is common?
I
II
III
V
What is the result of meiosis?
2 haploid unique cells
2 diploid identical cells
4 haploid unique cells
4 diploid identical cells
When does crossing over occur?
Prophase I
Metaphase I
Anaphase I
Telophase I
When does independent assortment occur?
Prophase I
Metaphase I
Anaphase I
Telophase I
During meiosis I, which of the following are paired, aligned, and separated?
homologous chromosomes
sister chromatids
kinetochore microtubules
signaling molecules
During meiosis II, which of the following are paired, aligned, and separated?
homologous chromosomes
sister chromatids
kinetochore microtubules
signaling molecules
How does mitosis and meiosis differ?
mitosis has 1 round of replication and 2 rounds of division while meiosis has 1 round of replication and 1 round of division
mitosis has 1 round of replication and 1 round of division while meiosis has 1 round of replication and 2 rounds of division
mitosis has 1 round of replication and 1 round of division while meiosis has 2 rounds of replication and 2 rounds of division
mitosis has 2 rounds of replication and 2 rounds of division while meiosis has 1 round of replication and 1 round of division
At the end of telophase I, the resulting daughter cells are?
haploid
diploid
Which of the following resulted from nondisjunction?
Three copies of chromosome 21
Three copies of all chromosomes
Two copies of all chromosomes
Two copies of chromosome 21
When observing a karyotype, how can one determine that a case of nondisjunction occurred?
There are two sets of all chromosomes
There is only one of an autosomal chromosome
There are two X chromosomes.
There is a only one X and Y chromosome.
What happens to the additional X chromosome found in female cells?
The extra X chromosome produces extra protein products.
The extra X chromosome is deactivated and stored as Barr body
There is no extra X chromosome found in female cells.
The extra X is stored in the eggs in the ovaries of females for future usage.
Which of the following enzymes is responsible for synthesizing the new DNA strand?
DNA polymerase
Helicase
Primase
DNA ligase
What is the difference between leading and lagging strands?
DNA is synthesized in a 5' to 3' direction on the lagging strand and a 3' to 5' direction on the leading strand
DNA is synthesized in a 3' to 5' direction on the lagging strand and a 5' to 3' direction on the leading strand
DNA is synthesized continuously on the leading strand and discontinuously on the lagging strand
DNA is synthesized discontinuously on the leading strand and continuously on the lagging strand
Which of the following enzymes is responsible for joining the Okazaki fragments?
DNA polymerase
Helicase
Primase
DNA ligase
Which of the following explains the base pairing rules?
G pairs with T with 3 hydrogen bonds and A pairs with C with 2 hydrogen bonds
G pairs with T with 2 hydrogen bonds and A pairs with C with 3 hydrogen bonds
A pairs with T with 2 hydrogen bonds and G pairs with C with 3 hydrogen bonds
A pairs with T with 3 hydrogen bonds and G pairs with C with 2 hydrogen bonds
Which of the following enzymes is responsible for breaking the hydrogen bonds between nucleotides?
DNA polymerase
Helicase
Primase
DNA ligase
Which of the following explains why DNA polymerase requires primase for synthesis of a new strand?
DNA polymerase requires an open 3' end
DNA polymerase requires an open 5' end
DNA polymerase requires ATP
DNA polymerase requires a promoter
Which of the following describes the 5' end?
phosphate attached to the pentose sugar
hydroxyl attached to the pentose sugar
nitrogenous base attached to the pentose sugar
the next nucleotide attached to the pentose sugar
Which of the following describes how DNA replication differs between a prokaryotes and eukaryotes?
Prokaryotes have circular DNA requiring one origin of replication while eukaryotes have multiple origins on linear DNA
Prokaryotes have linear DNA requiring one origin of replication while eukaryotes have multiple origins on circular DNA
Prokaryotes have circular DNA requiring multiple origins of replication while eukaryotes have one origin on linear DNA
Prokaryotes have linear DNA requiring multiple origins of replication while eukaryotes have one origin on circular DNA
Which of the following describes why there is a leading and lagging strand in DNA replication?
DNA is antiparallel
DNA is negatively charged
DNA has a phosphate group
DNA has hydrogen bonds
Which of the following strands would be more stable at a higher temperature?
AATTAATTAATT
CCGGCCGGCCGG
ATCGATCGATCGAT
CGATCGATCGATCG
What are the three parts of signal transduction pathway?
reception, transduction, response
confirmation, transduction, transcription
reception, amplification, transcription
confirmation, amplification, response
Transduction step traditionally amplifies the signal, which of the following are NOT involved with transduction?
secondary messengers
protein modification
phosphorylation cascade
ligands
Which of the following is NOT a response by the cell from a signal transduction pathway?
cell growth
gene expression
secretion of molecules
all of the above are responses
Describe what occurs when the ligand binds to the receptor.
confirmation change in shape of receptor
phosphorylation of ligand
ligand passes through the membrane
receptor binds additional ligands
Describe the impact of a mutation in any domain of the protein components of the transduction signaling pathway.
receptor unable to bind to ligand
no changes in transduction due to initial signal transduction from ligand
alters response of the cell
amplification of signaling pathway to bind more ligands
Which feedback mechanism involves homeostasis of a particular condition by regulating physiological processes?
Positive Feedback
Negative Feedback
Which feedback mechanism involves amplifying responses and processes in biological organisms?
Positive Feedback
Negative Feedback
Which of the following is NOT a stage of the cell cycle?
interphase
cytokinesis
mitosis
apoptosis
Which of the following is the stage where the cell no longer divides?
G0
G1
G2
S
Which of the following describes the order of the steps in mitosis?
metaphase, telophase, anaphase, prophase
prophase, metaphase, anaphase, telophase
telophase, anaphase, metaphase, prophase
prophase, anaphase, metaphase, telophase
Which of the following is NOT a role of mitosis?
gametes
tissue repair
growth
asexual reproduction
Which checkpoint is responsible for ensuring nondisjunction does not take place?
G1 checkpoint
S checkpoint
G2 checkpoint
M checkpoint
Describe the interaction between cyclin and CdK.
cyclin interacts with CdK to initiate the mitotic phase
cyclin is the precursor to CdK, when synthesized allow for mitosis proceed
cyclin acts as an inhibitor to CdK to wait for all DNA to be synthesized
cyclin binds to CdK to initiate DNA replication
Mitosis results in...
2 identical diploid cells
4 unique diploid cells
2 unique haploid cells
4 identical haploid cells
Which of the following is NOT a step in cellular respiration?
Glycolysis
Krebs Cycle
Oxidative Phosphorylation
Calvin Cycle
Where does glycolysis take place?
Cytosol
Mitochondrial Matrix
Mitochondrial Cristae
Stroma
Thylakoid Membrane
What is the input of glycolysis?
glucose
pyruvate
NADH
G3P
What is the output of glycolysis?
glucose
2 pyruvate
2 NADH
2 ATP
2 FADH2
What is the main function of glycolysis?
To complete the breakdown of glucose
To generate a proton gradient and synthesize ATP
To split a glucose molecule in half and synthesize NADH
What is the main function of glycolysis?
To complete the breakdown of glucose
To generate a proton gradient and synthesize ATP
To split a glucose molecule in half and synthesize NADH
Where does Krebs cycle take place?
Cytosol
Mitochondrial Matrix
Mitochondrial Cristae
Stroma
Thylakoid Membrane
What is the input of Krebs cycle?
pyruvate
acetyl CoA
glucose
NADH
What is the output of Krebs cycle (one turn)?
3 NADH
1 FADH2
1 ATP
2 CO2
acetyl CoA
What is the main function of Krebs cycle?
To complete the breakdown of glucose
To generate a proton gradient and synthesize ATP
To split a glucose molecule in half and synthesize NADH
Where does oxidative phosphorylation take place?
Cytosol
Mitochondrial Matrix
Mitochondrial Cristae
Stroma
Thylakoid Membrane
What is the output of oxidative phosphorylation?
ATP
NADH
FADH2
glucose
What is the main function of oxidative phosphorylation?
To complete the breakdown of glucose
To generate a proton gradient and synthesize ATP
To split a glucose molecule in half and synthesize NADH
Which step of cellular respiration REQUIRES oxygen?
glycolysis
Krebs cycle
oxidative phosphorylation
Calvin cycle
Which step can be performed by prokaryotes AND eukaryotes?
glycolysis
Krebs cycle
oxidative phosphorylation
Calvin cycle
Which of the following is NOT a part of photosynthesis?
Calvin cycle
Light reactions
Light independent reactions
Krebs cycle
Where do the light reactions take place?
cytosol
thylakoid membrane
stroma
mitochondrial matrix
What is the input for the light reactions?
light energy
ATP
NADPH
H2O
What is the output for the light reactions?
light energy
ATP
NADPH
H2O
Where does the Calvin cycle take place?
cytosol
thylakoid membrane
stroma
mitochondrial matrix
What is the input for the Calvin cycle?
CO2
H2O
NADPH
ATP
G3P
What is the output for the Calvin cycle?
CO2
H2O
NADPH
ATP
G3P
How many CO2 molecules are needed to make 1 G3P?
1
2
3
6
How many turns of the Calvin cycle are required for 1 G3P to be synthesized?
1
2
3
6
How many turns of the Calvin cycle are required for 1 G3P to be synthesized?
1
2
3
6
How many NADPHs are required for the Calvin cycle?
2
3
6
9
How many ATPs are required for the Calvin cycle?
2
3
6
9
Which of the following describes the pathway of electrons in the light reactions?
O2 -> PS II -> PS I -> NADH
O2 -> PS II -> PS I -> NADPH
O2 -> PS I -> PS II -> NADPH
O2 -> PS I -> PS II -> NADH
Which of the following include an electron transport chain?
Mitochondria
Chloroplast
Mitochondria & Chloroplast
Plasma Membrane
Where are the ATP and the NADPH synthesized in photosynthesis?
thylakoid space
stroma
mitochondria
cytosol
Where are the ATP and the NADPH synthesized in photosynthesis?
thylakoid space
stroma
mitochondria
cytosol
Which direction are the protons pumped in the electron transport chain found in photosynthesis?
into the thylakoid space
into the stroma
into the intermembrane space
into the cytosol
Which direction are the protons pumped in the electron transport chain found in cellular respiration?
into the thylakoid space
into the matrix
into the intermembrane space
into the cytosol
What is the difference between endergonic and exergonic reactions?
Endergonic requires input of energy from the environment and exergonic released energy to the environment
Endergonic releases energy to the environment and exergonic requires input of energy from the environment
Endergonic is catabolic, dehydration reactions and exergonic is anabolic, hydrolysis reactions
Endergonic is anabolic, hydrolysis reactions and exergonic is catabolic, dehydration reactions
What is the difference between endergonic and exergonic reactions?
Endergonic requires input of energy from the environment and exergonic released energy to the environment
Endergonic releases energy to the environment and exergonic requires input of energy from the environment
Endergonic is catabolic, dehydration reactions and exergonic is anabolic, hydrolysis reactions
Endergonic is anabolic, hydrolysis reactions and exergonic is catabolic, dehydration reactions
Describe energy coupling.
Pairing an endergonic reaction requiring energy with an exergonic reaction providing energy.
Pairing two exergonic reactions together.
Pairing two endergonic reactions together.
Pairing an endergonic reaction providing energy with an exergonic reaction requiring energy.
Describe the function of fermentation.
To synthesize ATP in the absence of oxygen.
To regenerate NADH required for glycolysis.
To synthesize ATP in the presence of oxygen.
To regenerate NADH required for electron transport
Which of the following is oxidized in cellular respiration?
glucose
oxygen
water
carbon dioxide
Which of the following is oxidized in photosynthesis?
glucose
oxygen
water
carbon dioxide
Which of the following is the final electron acceptor in cellular respiration?
carbon dioxide
oxygen
NADH
NADPH
Which of the following is the reduced in the Calvin cycle?
carbon dioxide
oxygen
NADH
NADPH
Which of the following is NOT found in the Calvin cycle?
oxygen
carbon dioxide
ATP
NADPH
Which of the following is NOT found in the Krebs cycle?
Glucose
FADH2
ATP
NADH
Which of the following questions is most relevant to understanding the Calvin cycle?
How does chlorophyll capture light?
How is ATP used in the formation of 3-carbon carbohydrates?
How is NADP+ reduced to NADPH?
How is ATP produced in chemiosmosis?
Which of the following provides the best indication that light is required for the activation of electron transfer reactions in chloroplasts?
Calculating the rate of change of the absorbance for sample 1
Comparing the observed results for sample 2 and sample 3
Repeating the entire experimental procedure at night
Including multiple trials for all the samples
Which of the following can be reasonably concluded from the experimental results?
Chloroplasts must be suspended in a buffer solution to function properly.
The optimal temperature for activation of electron transfer is 25°C.
DCPIP inhibits biochemical reactions in suspended chloroplasts.
Light from a lamp can substitute for sunlight in stimulating chloroplast processes
If an additional sample containing the chloroplast/DCPIP solution was placed at a distance of 90 cm from the lamp, which of the following predictions would be most consistent with the experimental results?
The concentration of DCPIP in the solution will increase exponentially.
The absorbance at 60 minutes will be roughly equal to 1.4.
The change in absorbance over time in the solution will be less than that of the other samples.
The temperature of the solution will exceed 75°C.
Which of the following descriptions of photosynthesis best explains the results of the experiment?
Availability of electrons for transfer to DCPIP depends on light energy.
Movement of DCPIP across chloroplast membranes occurs in less than 60 minutes.
Chlorophyll molecules degrade rapidly in the presence of DCPIP.
DCPIP can only be used to measure photosynthetic activity at low light levels.
Which of the following scientific questions could be investigated using a similar experimental setup?
How much carbon dioxide is required by a plant cell to produce one molecule of glucose?
What wavelength of light best activates electron transfer reactions in chloroplasts?
Which molecule in chloroplasts accepts activated electrons from DCPIP during photosynthesis?
Are the same genes that are expressed in chloroplasts also expressed in mitochondria?
Students in a class measured the mass of various living organisms. They then kept the organisms in the dark for 24 hours before remeasuring them. None of the organisms were provided with nutrients during the 24-hour period. The data are as follows.
Which of the following is the best explanation for the pattern of change in mass of the organisms over time?
Water loss due to evaporation
Cellular respiration
The law of conservation of matter
Growth and reproduction
