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WorksheetsBiology Keystone Exam Review
Total questions: 52
Worksheet time: 4hrs 22mins
All are characteristics prokaryotic and eukaryotic cells share EXCEPT
Cytoplasm
Ribosomes
Nucleus
Plasma membrane
Of the selections provided, which is the largest level of organization found in the biosphere?
Organelle
Biome
Ecosystem
Organism
Looking within an organism, which selection shows organization from smallest to largest?
Cell, tissue, organ, organ system
Organ system, tissue, cell, organelle
Cell, organelle, organ, organ system
Tissue, cell, organ system, organelle
A well-tested explanation that unifies a broad range of observations
hypothesis
inference
law
theory
The ability of an organism to maintain an internal steady state is called
metabolism
homeostasis
respiration
thermoregulation
All are characteristics of life EXCEPT
Ability to move
Obtain and use energy
Ability to reproduce
Grow and develop
If a compound contains carbon, hydrogen, oxygen and nitrogen, what kind of organic molecule is it?
carbohydrate
lipid
protein
nucleic acid
When a molecule contains atoms that share electrons, they have __________ bonds.
hydrogen
ionic
van der waals
covalent
When an overall neutral compound has charged regions, it is considered
nonpolar
polar
When the positive end of a water molecule is attracted to the negative end of an adjacent water molecule, what kind of bond is created?
ionic
hydrogen
covalent
nonpolar
All are a result of water's polar characteristic
cohesion
adhesion
high specific heat
universal solvency
True or False: The colder water gets, the more dense it becomes.
True
False
How many valence electrons does carbon have? (Atomic Number = 6)
2
4
6
8
Which carbon compound(s) are used for energy?
carbohydrates
lipids
proteins
nucleic acids
The monomer of a nucleic acid is a(n)
nucleotide
amino acid
monsaccharide
fatty acid
The type of carbon macromolecule that has a C:H:O ratio of 1:2:1 is?
carbohydrate
lipid
protein
nucleic acid
This monomer is to
carbohydrates
lipids
proteins
nucleic acids
What type of reaction combines two monomers together
dehydration synthesis
hydrolysis
catabolism
exergonic
The place on an enzyme where a substrate will bind is called
allosteric site
active site
P site
A site
All are factors that effect enzyme activity
temperature
pH
substrate concentration
time of day
The energy needed to start an enzyme catalyzed reaction is called
endergonic energy
exergonic energy
activation energy
anabolistic energy
The organelle responsible for capturing sunlight and converting it to chemical energy is
mitochondria
ribosome
chloroplast
vacuole
The reaction that represents cellular respiration is
C6H12O6 + 6H2O --> 6CO2 + 6 O2
6O2 + 6C6H12O6 --> CO2 + H2O
CO2 + 6H2O + 6O2 --> C6H12O6
C6H12O6 + 6O2 --> 6CO2 + 6H20
All are steps of photosynthesis EXCEPT
Calvin cycle
Krebs cycle
Photosystem I
Photosystem II
The name of this molecule is
ADP
ATP
Adenosine monophosphate
Light energy
True or False: The process of fermentation produces chemical energy.
True
False
Where does glycolysis take place?
mitochondrial matrix
cytoplasm
cristae
thylakoid
A stack of thylakoid membranes are called
chloroplasts
cristae
granum
electron transport chain
True or False: Plants do cellular respiration.
True
False
The fluid mosaic model describes
the cell membrane structure
how water dissolves materials
the organization of life
turning DNA into protein
The primary component of a cell membrane is
carbohydrate
lipid
protein
nucleic acid
When solutes move from an area of low concentration to high concentration with the use of energy
active transport
diffusion
neural transport
nephrolysis
All are examples of passive transport
diffusion
osmosis
facilitated diffusion
exocytosis
The organelle responsible for destroying old cell parts or digesting molecules
vacuole
ER
Golgi
lysosome
All are included in the endomembrane system of the cell EXCEPT
Rough ER
Vacuole
Golgi
mitochondria
A solution that will cause a cell to shrink is said to be
hypertonic
hypotonic
isotonic
in equilibrium
Having a _______ surface area per volume helps with transport and maintaining homeostasis
smaller
larger
A scientist observes a single-celled organism with several long, whip-like tails. Which function do the whip-like tails most likely perform for the organism?
defense against predators
movement through an environment
detection of the location of a light source
measurement of atmospheric temperature changes
Trees are typically able to transport water from their roots to their stems and leaves. Which statement describes the property of water that most supports the transportation of water to all parts of a tree?
Water forms a crystalline structure when it freezes.
Water dissolves fewer substances than any other liquid.
Water has strong attractions to itself and many other molecules.
Water can absorb large amounts of energy with minimal temperature changes.
Which process best describes the assembly of proteins from amino acids?
Atoms are linked to form a compound.
Monomers are linked to form a polymer.
Atoms are added to a monomer until it becomes a polymer.
Molecules are added to a compound until it becomes a monomer.
Which biological molecules are most likely represented by molecules 1 and 2?
molecule 1: lipid
molecule 2: nucleic acid
molecule 1: lipid
molecule 2: protein
molecule 1: carbohydrate
molecule 2: nucleic acid
molecule 1: carbohydrate
molecule 2: protein
Which statement best describes a relationship between enzymes and a simple biological reaction?
Enzymes will increase the amount of substrate formed during a biological reaction.
Enzymes will decrease the amount of substrate formed during a biological reaction.
A reaction rate can be increased when the specific enzyme for a biological reaction is present.
A reaction rate can be decreased when multiple enzymes for a biological reaction are present.
Microbes in the digestive system break down food, which allows nutrients to be absorbed by the body's cells. How will these body cells most likely be affected in an individual suffers from a high fever?
The body cells will swell because an increase in temperature promotes greater water absorption.
The body cells will stop absorbing nutrients because the heat melts the lipid bilayer of the plasma membrane.
The body cells will shrivel because the heat eliminates the chemical gradients on either side of the plasma membrane.
The body cells will bring in fewer nutrient molecules because the transport proteins lose their proper shape due to the high temperature.
Four students classified the main energy conversions that occur during photosynthesis and cellular respiration. Which student best classified the energy conversions that occur in the two processes.
Student 1
Student 2
Student 3
Student 4
A scientist observed that during the course of a chemical reaction the number of ATP molecules was reduced. What did the scientist most likely learn from the observation?
The reaction produced water.
The reaction consumed water.
The reaction caused an output of energy.
The reaction required an input of energy.
Which of the following is most involved in providing structure for a plasma membrane?
the number of protein channels embedded in the membrane
the types of carbohydrates attached to proteins on the surface
the types of proteins that are attached to the surface of the membrane
the arrangement of the hydrophobic and hydrophilic ends of the phospholipids
What cell process is best modeled by the diagram?
osmosis
exocytosis
passive transport
facilitated diffusion
The shivering mechanism in bumblebees often serves the same purpose that it does in mammals. During which condition will the action of shivering most help a bumblebee to maintain homeostasis?
decrease in available oxygen
low environmental temperature
uncontrolled rise in core temperature
depletion of oxygen in muscle tissues
A cell in the leaf of a green plant performs both photosynthesis and cellular respiration, often at the same time. Which statement best describes how these processes are related to each other?
Both processes produce carbon dioxide.
Both processes require energy directly from the sun.
Products of one process are used as some of the reactants for the other process.
Thermal energy from one process is used as the energy source for the other process.
Which statement best describes how channel and carrier proteins in the plasma membrane are similar?
Both allow for the flow of molecules into and out of a cell.
Both directly connect the membrane to the nucleus of a cell.
Both use energy to continuously move water molecules out of a cell.
Both cause the phospholipid bilayer to form a rigid membrane for a cell.
Most prokaryotes and eukaryotes maintain a reserve of ATP. Which feature of prokaryotes and eukaryotes makes the ATP reserve necessary?
They have a cell membrane.
They can change over time.
They use energy to function.
They have the ability to reproduce.
The golgi apparatus is broken down during mitosis and then reformed. Which function would a cell be unable to perform during the time that its Golgi apparatus is broken down?
copying genetic material to include in the new cell
forming vesicles to import molecules into the cell
processing and packaging proteins for the cellular export
correcting errors in the process of building a new cell
