WorksheetsAP Biology Diagnostic Practice Exam
Total questions: 60
Worksheet time: 42mins
UNIT 1: Describes the breaking of a bond within a polymer using water.
Hydrolysis
Dehydration
UNIT 1: What is the molecule illustrated in the figure below?
a trans polyunsaturated triacylglyceride
a steroid similar to cholesterol
a saturated fatty acid
an unsaturated fatty acid
UNIT 1: This is a picture of a?
Amino Acid
Nucleic Acid
Lipid
Polysaccharide
UNIT 1: What element is found in proteins and nucleic acids but not carbs nor lipids?
carbon
hydrogen
nitrogen
oxygen
UNIT 1: Which of the 4 major macromolecules provides a quick burst of energy?
Carbohydrates
Lipids
Proteins
Nucleic Acids
UNIT 1: The structure of proteins can be changed by environmental factors such as temperature or pH.
True
False
UNIT 2: Which statement is correct about diffusion?
It's very rapid over long distances.
It's a passive process which molecules move from a region of higher to lower concentration.
It requires an energy expenditure by the cell.
It's an active process where molecules move from a region of lower to higher concentration.
UNIT 2: Which structure is common to plant and animal cells?
central vacuole
chloroplast
wall made of cellulose
mitochondrion
UNIT 2: A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water-equal to the volume of blood lost-is transferred directly into one of his veins. What will be the most probable result of this transfusion?
The patient's red blood cells will shrivel up because the blood fluid has become hypertonic compared to the cells.
The patient's red blood cells will shrivel up because the blood fluid has become hypotonic compared to the cells.
It will have no unfavorable effect as long as the water is free of viruses and bacteria.
The patient's red blood cells will swell because the blood fluid has become hypotonic compared to the cells.
UNIT 2: Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?
phosphorylated tyrosine kinase dimer
ligand-gated ion channel
receptor tyrosine kinase
G protein-coupled receptor
UNIT 2: All of the following are part of a prokaryotic cell except
a plasma membrane
DNA
an endoplasmic reticulum
ribosomes
UNIT 2: White blood cells engulf bacteria through what process?
pinocytosis
osmosis
phagocytosis
exocytosis
UNIT 3: Where on an enzyme does the substrate bind?
active site
allosteric site
C-terminus
N-terminus
UNIT 3: Which process releases energy in glucose to form ATP, NADH, and pyruvate?
Glycolysis
Oxidative Phosphorylation
Krebs Cycle
Fermentation
UNIT 3: Where does the electron transport chain take place?
chloroplasts
prokaryotic plasma membrane
mitochondria
all of the choices
UNIT 3: What are the products of the light-dependent reactions of photosynthesis?
ATP & NADH
CO2 & H2O
NADPH & ATP
Organic Compounds & O2
UNIT 3: 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
UNIT 3: Enzymes ___________________ activation energy to speed up chemical reactions.
increase
decrease
UNIT 3: How does the active site of an enzyme determine the substrate for that enzyme?
The active site has the right polarity to interact with the substrate.
The active site is hydrophobic and interacts with other hydrophobic amino acids on the substrate
The active site has a specific shape that fits the shape of the substrate
The active site uses energy to form covalent bonds with the substrate
UNIT 3: What are the products of the Krebs Cycle?
Pyruvate, water, ATP, NADH
Acetyl CoA, NADH
NADH, FADH2, carbon dioxide, ATP
ATP, glucose
UNIT 3: What powers the ATP synthase enzymes in mitochondria and chloroplasts?
The energy absorbed during the light reactions.
The electronegativity of oxygen
Energy released by breaking the chemical bonds in glucose
The diffusion of hydrogen
UNIT 4: This diagram shows transduction of a signal. How is the signal being transduced to its target location in the cell?
A hormone is binding to an intracellular protein receptor
Transport vesicles are passing neurotransmitters to neighboring cells
Enzymes are passing phosphate groups down a series of proteins
cAMP is formed activating a desired response
UNIT 4: What are the three parts of signal transduction pathway?
reception, transduction, response
confirmation, transduction, transcription
reception, amplification, transcription
confirmation, amplification, response
UNIT 4: 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
UNIT 4: Which feedback mechanism involves homeostasis of a particular condition by regulating physiological processes?
Positive Feedback
Negative Feedback
UNIT 4: Which of the following is NOT a stage of the cell cycle?
interphase
cytokinesis
mitosis
apoptosis
UNIT 4: Mitosis results in...
2 identical diploid cells
4 unique diploid cells
2 unique haploid cells
4 identical haploid cells
UNIT 5: Which of the following does NOT increase variation in gamete formation?
crossing over
fertilization of gametes
random assortment of chromosomes
condensation of chromatin
UNIT 5: Which of the following does NOT support the concept of common ancestry for all organisms?
DNA/RNA (genetic code) are shared by all living systems
Ribosomes are found in all forms of life
Glycolysis takes place in all organisms
All organisms undergo sexual reproduction
UNIT 5: Which of the following best describes the inheritance pattern of the shown pedigree?
Autosomal Dominant
Sex-Linked Dominant
Autosomal Recessive
Sex-Linked Recessive
UNIT 5: Identify the type of inheritance of the pedigree.
Sex-Linked
Mitochondrial
Autosomal
Random
UNIT 5: Which of the following is a predicted ratio of a dihybrid cross?
9:3:3:1
9:3:4
1:2:1
1:1:1:1
UNIT 5: When does the process of crossing over take place?
prophase I
metaphase I
anaphase I
telophase I
UNIT 6:Which of the following describes chromatin?
DNA nucleosomes wrapped around histone proteins
Condensed DNA prepared for cell division
Complimentary RNA coding of primary DNA
Unpackaged DNA that is loose and always accessible
UNIT 6:Which of the following describe the structure of mature RNA?
Contains Uracil
Contains introns and exons
Has a poly-A tail and 5' cap
Single stranded
Circular strand
UNIT 6:Which of the following would be transcribed from the following DNA sequence? 3' ATC GAA TTA CGA 5'
5' UAG CUU AAU GCU 3'
5' AUC GAA UUA CGA 3'
3' UCG UAA UUC UAG 5'
3' TAG CTT AAT GCT 5'
5' TAG CTT AAT GCT 3'
UNIT 6: Which of the following is true of DNA Replication?
DNA is semi conservative because it creates two new strands of old nucleotide.
New DNA strands are being synthesized in the 5' to 3' direction
DNA is being synthesized in the 3' to 5' directions from a template strand
RNA is being synthesized by RNA polymerase in the 5' to 3' direction
A sense strand is created from a nonsense strand of DNA using RNA polymerase
UNIT 6: Which enzyme is used during replication to attach Okazaki fragments to each other?
DNA ligase
DNA polymerase
Restriction enzymes
DNA primase
Topoisomerase
UNIT 6: What polypeptide chain would be created from the following DNA sequence: 5' TAC GGC CGA AGT CGT 3'
Met Pro Ala Ser Ala
Met Pro Ala Cyt Ala
Met Pro Ala Stop Ala
Tyr Gly Arg Iso Arg
Tyr Pro Ala Stop
UNIT 6: Where does RNA polymerase bind to DNA?
at an activator site
on the coding gene sequence
at a promoter region
downstream of the coding sequence
Where the RNA primer is placed
UNIT 6:Which of the following enzymes are used in the process of transcription?
RNA polymerase
DNA polymerase
RNA primase
Spliceosomes
Activator proteins
UNIT 6: How do amino acids know where to orient during protein synthesis?
anticodons match complementary codons
codons connect with the mRNA
amino acids only bind in a specific order
rRNA brings the appropriate amino acids to the EPA site
tRNA carries amino acids to the nucleus
UNIT 7: What factors would increase the frequency of a genotype in a population over time?
Increased reproduction rates in a population
Selective pressures that make the trait favorable
Genetic drift
Mutations in the population
UNIT 7: What is artificial selection?
When humans selectively breed organisms together to select for traits most desirable to us
When a new species has formed
When new organisms migrate into an area and introduce new genes
When organisms are separated from other members of their population due to new geographic barriers
UNIT 7: What is the founder effect?
When survivors of a natural disaster repopulate the environment
When a small population breaks off of an existing population
Changes in the genetic makeup of a population over time
The migration of organisms between two similar populations
UNIT 7: According to this cladogram, which animal has the closest common ancestor to a crocodile?
Mammals
Lizards and Snakes
Turtles
Birds
What are homologous structures?
Structures that are morphologically different but serve the same function
Similar shared structures that may serve different functions
UNIT 7: Which species on this cladogram have four walking legs?
Lancelet
Leopards only
All of the species have this trait
Salamander, turtle, leopards
UNIT 7: The graphs below show the changes in crab color at one beach.
Which of the following is most likely to have caused the change in the distribution?
A new predator arrived that preferred dark-tan crabs.
A new predator arrived that preferred light-tan crabs.
A change in beach color made medium-tan crabs the least visible to predators.
A change in beach color made medium-tan crabs the most visible to predators.
UNIT 7: In mice brown fur (B) is dominant over white fur (b). Scientists observed a population of 2000 mice, and found the frequency of the B allele to be 0.7. 10 years later the scientists revisited the population and found the frequency of the B allele to be 0.4.
In the original study, what percentage of the mice would have white fur?
70%
49%
9%
30%
UNIT 7: If 36% of a population shows the recessive trait, what percentage of the population would be expected to be heterozygous?
60%
16%
48%
40%
UNIT 8: A cheetah urinates on a tree. Which of the following types of signals is the cheetah using?
visual
audible
tactile
chemical
UNIT 8: Which of the following best describes the body temperature regulation for an alligator?
ectotherm that maintains body temperature through metabolism
ectotherm that maintains body temperature through behaviors
endotherm that maintains body temperature through metabolism
endotherm that maintains body temperature through behaviors
UNIT 8: Which of the following best describes the relationship between metabolic rate per unit body mass and the size of multicellular organisms?
the smaller the organism, the higher the metabolic rate
the larger the organism, the higher the metabolic rate
the higher the surface area to volume ratio of the cells, the higher the metabolic rate
the lower the surface area to volume ratio of the cells, the higher the metabolic rate
UNIT 8: In a population of 100 individuals, 20 individuals are born and there are 5 deaths. What is the r value?
Recall: r = per capita growth rate of population
.05
.15
.20
.25
UNIT 8: Which of the following describes the relationship of the mistletoe that gains resources and harms the mesquite tree that it grows on?
parasitism
commensalism
mutualism
predator/prey
UNIT 8: Which of the following describes the disadvantage of little species diversity in a community?
less likely to have immigration
more likely to be consumed by predators
more likely to have mutations
less resilient to changes in the environment
UNIT 8: Which of the following is an organism that is disproportionate relative to their abundance and when removed from the ecosystem causes it to collapse?
dominant species
invasive species
keystone species
primary consumer
UNIT 8: A group of bacteria are resistant to antibiotics. Which of the following describes HOW the bacteria became resistant?
the bacterial population got changed by the antibiotic in the environment
the bacterial population had random mutations making them favorable in the presence of the antibiotic
the bacterial population consumed the antibiotic providing a food source
the bacterial population uses the antibiotic for reproduction
UNIT 8: Which of the following best describes the changes to the trophic structure with a decrease in plant population?
increase in primary and secondary consumers
decrease in primary and secondary consumers
decrease in secondary consumer, increase in primary consumer
increase in secondary consumer, decrease in primary consumer
