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Transcript

1. Which of these is not a property of all
living organisms?
a. organization
b. acquisition of materials and energy
c. care for their offspring
d. reproduction
e. responding to the environment

1. Which of these is not a property of all
living organisms?
a. organization
b. acquisition of materials and energy
c. care for their offspring
d. reproduction
e. responding to the environment

3. The level of organization that includes cells
of similar structure and function would be
a.
b.
c.
d.
An organ
A tissue
An organ system
An organism

3. The level of organization that includes cells
of similar structure and function would be
a.
b.
c.
d.
An organ
A tissue
An organ system
An organism

4. The color, temperature, and foul odor of
the flowers of the titan arum are examples of
a. obtaining materials
b. adaptations
c. organizations
d. homeostasis

4. The color, temperature, and foul odor of
the flowers of the titan arum are examples of
a. obtaining materials
b. adaptations
c. organizations
d. homeostasis
•
5. which of the following is an example of
adaptation?
a. In a very wet year, some plants grow unusually
tall stalks and large leaves
b. Over millions of years, the eyes of cave
salamanders lose their function
c. An escaped dog joins a pack of wild dogs and
begins interbreeding with them
d. A harsh winter kills many birds within a
population, especially the smallest ones
•
5. which of the following is an example of
adaptation?
a. In a very wet year, some plants grow unusually
tall stalks and large leaves
b. Over millions of years, the eyes of cave
salamanders lose their function
c. An escaped dog joins a pack of wild dogs and
begins interbreeding with them
d. A harsh winter kills many birds within a
population, especially the smallest ones
•
6. energy is brought into ecosystems by
which of the following?
a. fungi and other decomposers
b. cows and other organisms that graze on
grass
c. meat-eating animals
d. organisms that photosynthesize, such as
plants
e. all of these are correct
•
6. energy is brought into ecosystems by
which of the following?
a. fungi and other decomposers
b. cows and other organisms that graze on
grass
c. meat-eating animals
d. organisms that photosynthesize, such as
plants
e. all of these are correct

7. we use the scientific method every day.
Suppose one morning that your car does not
start. Which of the following is a testable
hypothesis stemming from this observation?
a.
b.
c.
d.
e.
I’m going to be late
My battery is dead
Check to see if I left the lights on
Kick the tires
I will add a quart of oil

7. we use the scientific method every day.
Suppose one morning that your car does not
start. Which of the following is a testable
hypothesis stemming from this observation?
a.
b.
c.
d.
e.
I’m going to be late
My battery is dead
Check to see if I left the lights on
Kick the tires
I will add a quart of oil

8. which of the following statements is a
hypothesis?
a. Will increasing my cat’s food increase her weight?
b. Increasing my cat’s food consumption will result
in a 25% increase in her weight
c. I will feed my cat more food
d. My cat has gained weight; therefore, she is eating
more food

8. which of the following statements is a
hypothesis?
a. Will increasing my cat’s food increase her weight?
b. Increasing my cat’s food consumption will result
in a 25% increase in her weight
c. I will feed my cat more food
d. My cat has gained weight; therefore, she is eating
more food

9. After formulating a hypothesis, a scientist
a.
b.
c.
d.
Proves the hypothesis
Tests the hypothesis
Decides how to best avoid having a control
Makes sure environmental conditions are just
right
e. Formulates a scientific theory

9. After formulating a hypothesis, a scientist
a.
b.
c.
d.
Proves the hypothesis
Tests the hypothesis
Decides how to best avoid having a control
Makes sure environmental conditions are just
right
e. Formulates a scientific theory

10. The experimental variable in the bluebird
experiment was the
a.
b.
c.
d.
e.
Use of a model male bluebird
Observations of the experimenter
Various behavior of the males
Identification of what bluebirds to study
All of these are correct

10. The experimental variable in the bluebird
experiment was the
a.
b.
c.
d.
e.
Use of a model male bluebird
Observations of the experimenter
Various behavior of the males
Identification of what bluebirds to study
All of these are correct

12. Which of the following are agents of
natural selection?
a. Changes in the environment
b. Competition among individuals for food and
water
c. Predation by another species
d. Competition among members of a population for
prime nesting sites
e. All of these are correct

12. Which of the following are agents of
natural selection?
a. Changes in the environment
b. Competition among individuals for food and
water
c. Predation by another species
d. Competition among members of a population for
prime nesting sites
e. All of these are correct

13. Which of the following is an example of
natural selection?
a. In a very wet year, some plants grow unusually
tall stalks and large leaves
b. After unusually cold winters, squirrels with an
extra layer of fat have more offspring
c. Squirrels may have long or short tails
d. Dogs with longer legs are able to run faster than
dogs with shorter legs

13. Which of the following is an example of
natural selection?
a. In a very wet year, some plants grow unusually
tall stalks and large leaves
b. After unusually cold winters, squirrels with an
extra layer of fat have more offspring
c. Squirrels may have long or short tails
d. Dogs with longer legs are able to run faster than
dogs with shorter legs

14. Which of the following statements
regarding evolution is false?
a. Adaptation may be physical or behavioral
b. Natural selection always results in organisms
becoming more adapted to the environment
c. A trait selected for may suddenly become
selected against when the environment changes
d. Some traits are neither selected for nor against

14. Which of the following statements
regarding evolution is false?
a. Adaptation may be physical or behavioral
b. Natural selection always results in organisms
becoming more adapted to the environment
c. A trait selected for may suddenly become
selected against when the environment changes
d. Some traits are neither selected for nor against

1. which of the subatomic particles
contributes almost no weight to an atom?
a.
b.
c.
d.
Protons in electron shells
Electrons in the nucleus
Neutrons in the nucleus
Electrons at various energy levels

1. which of the subatomic particles
contributes almost no weight to an atom?
a.
b.
c.
d.
Protons in electron shells
Electrons in the nucleus
Neutrons in the nucleus
Electrons at various energy levels

2. The atomic number tells you the
a.
b.
c.
d.
e.
Number of neutrons in the nucleus
Number of protons in the atom
Atomic mass of the atom
Number of its electrons if the atom is neutral
Both b and d are correct

2. The atomic number tells you the
a.
b.
c.
d.
e.
Number of neutrons in the nucleus
Number of protons in the atom
Atomic mass of the atom
Number of its electrons if the atom is neutral
Both b and d are correct

3. an atom that has 2 electrons in the outer
shell, such as magnesium, would most likely
a. Share to acquire a completed outer shell
b. Lose these 2 electrons and become a negatively
charged ion
c. Lose these two electrons and become a positively
charged ion
d. Bind with carbon by way of hydrogen bonds
e. Bind with another calcium atom to satisfy its
energy needs

3. an atom that has 2 electrons in the outer
shell, such as magnesium, would most likely
a. Share to acquire a completed outer shell
b. Lose these 2 electrons and become a negatively
charged ion
c. Lose these two electrons and become a positively
charged ion
d. Bind with carbon by way of hydrogen bonds
e. Bind with another calcium atom to satisfy its
energy needs

4. Isotopes differ in their
a.
b.
c.
d.
Number of protons
Atomic number
Number of neutrons
Number of electrons

4. Isotopes differ in their
a.
b.
c.
d.
Number of protons
Atomic number
Number of neutrons
Number of electrons

5. When an atom gains electrons, it
a.
b.
c.
d.
e.
Forms a negatively charged ion
Forms a positively charged ion
Forms covalent bonds
Forms ionic bonds
Gains atomic mass

5. When an atom gains electrons, it
a.
b.
c.
d.
e.
Forms a negatively charged ion
Forms a positively charged ion
Forms covalent bonds
Forms ionic bonds
Gains atomic mass

8. In which of these are the electrons always
shared unequally?
a.
b.
c.
d.
e.
Double covalent bond
Triple covalent bond
Hydrogen bond
Polar covalent bond
Ionic and covalent bonds

8. In which of these are the electrons always
shared unequally?
a.
b.
c.
d.
e.
Double covalent bond
Triple covalent bond
Hydrogen bond
Polar covalent bond
Ionic and covalent bonds

12. H2CO3/NaHCO3 is a buffer system in the
body. What effect will the addition of an acid
have on the pH of a solution that is buffered?
a.
b.
c.
d.
The pH will rise
The pH will lower
The pH will not change
All of these are correct

12. H2CO3/NaHCO3 is a buffer system in the
body. What effect will the addition of an acid
have on the pH of a solution that is buffered?
a.
b.
c.
d.
The pH will rise
The pH will lower
The pH will not change
All of these are correct

13. rainwater has pH of about 5.6; therefore,
rainwater is
a.
b.
c.
d.
A neutral solution
An acidic solution
A basic solution
It depends if it is buffered

13. rainwater has pH of about 5.6; therefore,
rainwater is
a.
b.
c.
d.
A neutral solution
An acidic solution
A basic solution
It depends if it is buffered

15. Which type of bond results from the
sharing of electrons between atoms?
a.
b.
c.
d.
Covalent
Ionic
Hydrogen
Neutral

15. Which type of bond results from the
sharing of electrons between atoms?
a.
b.
c.
d.
Covalent
Ionic
Hydrogen
Neutral

17. Why is –NH2 a polar group?
a.
b.
c.
d.
Nitrogen is more electronegative than hydrogen
The bonds are not symmetrical
Because hydrogen bonding takes place
Both a and b are correct

17. Why is –NH2 a polar group?
a.
b.
c.
d.
Nitrogen is more electronegative than hydrogen
The bonds are not symmetrical
Because hydrogen bonding takes place
Both a and b are correct

1. Which of these is NOT a characteristic of
carbon?
a.
b.
c.
d.
e.
Forms 4 covalent bonds
Bonds with other carbon atoms
Is sometimes ionic
Can form long chains
Sometimes shares two pairs of electrons with
another atom

1. Which of these is NOT a characteristic of
carbon?
a.
b.
c.
d.
e.
Forms 4 covalent bonds
Bonds with other carbon atoms
Is sometimes ionic
Can form long chains
Sometimes shares two pairs of electrons with
another atom

3. a hydrophilic group is
a.
b.
c.
d.
e.
Attracted to water
A polar and/or ionized group
Found at the end of fatty acids
The opposite of a hydrophobic group
All of these are correct

3. a hydrophilic group is
a.
b.
c.
d.
e.
Attracted to water
A polar and/or ionized group
Found at the end of fatty acids
The opposite of a hydrophobic group
All of these are correct

4. Which of these is an example of a
hydrolysis reaction?
a.
b.
c.
d.
e.
Amino acid + amino aciddipeptide + water
Dipeptide + water  amino acid + amino acid
Denaturation of a polypeptide
Both a and b are correct
Both b and c are correct

4. Which of these is an example of a
hydrolysis reaction?
a.
b.
c.
d.
e.
Amino acid + amino aciddipeptide + water
Dipeptide + water  amino acid + amino acid
Denaturation of a polypeptide
Both a and b are correct
Both b and c are correct

6. a fatty acid is unsaturated if it
a.
b.
c.
d.
e.
Contains hydrogen
Contains carbon-carbon double bonds
Contains a carboxyl group
Bonds to glycogen
Bonds to a nucleotide

6. a fatty acid is unsaturated if it
a.
b.
c.
d.
e.
Contains hydrogen
Contains carbon-carbon double bonds
Contains a carboxyl group
Bonds to glycogen
Bonds to a nucleotide

7. Which of these is NOT a lipid?
a.
b.
c.
d.
e.
Steroid
Fat
Polysaccharide
Wax
phospholipid

7. Which of these is NOT a lipid?
a.
b.
c.
d.
e.
Steroid
Fat
Polysaccharide
Wax
phospholipid

8. The difference between one amino acid
and another is found in the
a.
b.
c.
d.
e.
Amino group
Carboxyl group
R group
Peptide bond
Carbon atoms

8. The difference between one amino acid
and another is found in the
a.
b.
c.
d.
e.
Amino group
Carboxyl group
R group
Peptide bond
Carbon atoms

9. The shape of a polypeptide is
a. Maintained by bonding between parts of the
polypeptide
b. Ultimately dependent on the primary structure
c. Necessary to its function
d. All of these are correct

9. The shape of a polypeptide is
a. Maintained by bonding between parts of the
polypeptide
b. Ultimately dependent on the primary structure
c. Necessary to its function
d. All of these are correct

11. Nucleotides
a. Contain a sugar, a nitrogen-containing base, and
a phosphate group.
b. Are the monomers of fats and polysaccharides.
c. Join together by covalent bonding between the
bases.
d. Are present in both DNA and RNA
e. Both a and d are correct.

11. Nucleotides
a. Contain a sugar, a nitrogen-containing base, and
a phosphate group.
b. Are the monomers of fats and polysaccharides.
c. Join together by covalent bonding between the
bases.
d. Are present in both DNA and RNA
e. Both a and d are correct.

12. ATP
a. Is an amino acid
b. Has a helical structure
c. Is a high-energy molecule that can break down
to ADP and phosphate
d. Provides enzymes for metabolism
e. Is most energetic when in the ADP state

12. ATP
a. Is an amino acid
b. Has a helical structure
c. Is a high-energy molecule that can break down
to ADP and phosphate
d. Provides enzymes for metabolism
e. Is most energetic when in the ADP state

14. The monomer of a carbohydrate is
a.
b.
c.
d.
An amino acid
A nucleic acid
A monosaccharide
A fatty acid

14. The monomer of a carbohydrate is
a.
b.
c.
d.
An amino acid
A nucleic acid
A monosaccharide
A fatty acid

15. The joining of two adjacent amino acids
is called
a.
b.
c.
d.
A peptide bond
A dehydration reaction
A covalent bond
All of these are correct

15. The joining of two adjacent amino acids
is called
a.
b.
c.
d.
A peptide bond
A dehydration reaction
A covalent bond
All of these are correct

16. The characteristic globular shape of a
polypeptide is the
a.
b.
c.
d.
Primary structure
Secondary structure
Tertiary structure
Quaternary structure

16. The characteristic globular shape of a
polypeptide is the
a.
b.
c.
d.
Primary structure
Secondary structure
Tertiary structure
Quaternary structure

17. The shape of a polypeptide
a. Is maintained by bonding between parts of the
polypeptide
b. Is ultimately dependent on the primary structure
c. Involves hydrogen bonding
d. All of these are correct

17. The shape of a polypeptide
a. Is maintained by bonding between parts of the
polypeptide
b. Is ultimately dependent on the primary structure
c. Involves hydrogen bonding
d. All of these are correct

18. Which of the following pertains to an RNA
nucleotide and not to a DNA nucleotide?
a.
b.
c.
d.
Contains the sugar ribose
Contains a nitrogen-containing base
Contains a phosphate molecule
Becomes bonded to other nucleotides following a
dehydration reaction

18. Which of the following pertains to an RNA
nucleotide and not to a DNA nucleotide?
a.
b.
c.
d.
Contains the sugar ribose
Contains a nitrogen-containing base
Contains a phosphate molecule
Becomes bonded to other nucleotides following a
dehydration reaction

19. Which is a carbohydrate?
a.
b.
c.
d.
Disaccharide
Amino acid
Dipeptide
Both a and c are correct

19. Which is a carbohydrate?
a.
b.
c.
d.
Disaccharide
Amino acid
Dipeptide
Both a and c are correct

31. Which of these does not apply to DNA?
a.
b.
c.
d.
e.
Sequence of nucleotides
Sugar-phosphate backbone
A-T and C-G
Sequence of amino acids
Both a and c do not apply

31. Which of these does not apply to DNA?
a.
b.
c.
d.
e.
Sequence of nucleotides
Sugar-phosphate backbone
A-T and C-G
Sequence of amino acids
Both a and c do not apply
•
32. Which is a correct statement about
carbohydrates?
a. All polysaccharides serve as energy storage
molecules
b. Glucose is broken down for immediate energy.
c. Glucose is not a carbohydrate, only
polysaccharides are.
d. Starch, glycogen, and cellulose have different
monomers.
e. Both a and c are correct.
•
32. Which is a correct statement about
carbohydrates?
a. All polysaccharides serve as energy storage
molecules
b. Glucose is broken down for immediate energy.
c. Glucose is not a carbohydrate, only
polysaccharides are.
d. Starch, glycogen, and cellulose have different
monomers.
e. Both a and c are correct.

33. In phospholipids,
a.
b.
c.
d.
Heads are polar
Tails are nonpolar
Heads contain phosphate
All of these are correct

33. In phospholipids,
a.
b.
c.
d.
Heads are polar
Tails are nonpolar
Heads contain phosphate
All of these are correct

1. The small size of cells best correlates with
a. The fact that they are self-reproducing
b. Their prokaryotic versus eukaryotic nature
c. An adequate surface area for exchange of
materials
d. The fact that they come in multiple sizes
e. All of these are correct

1. The small size of cells best correlates with
a. The fact that they are self-reproducing
b. Their prokaryotic versus eukaryotic nature
c. An adequate surface area for exchange of
materials
d. The fact that they come in multiple sizes
e. All of these are correct
•
3. Which of these best distinguishes a
prokaryotic cell from a eukaryotic cell?
a. Prokaryotic cells have a cell wall, but eukaryotic
cells never do.
b. Prokaryotic cells are much larger than eukaryotic
cells
c. Prokaryotic cells have flagella, but eukaryotic
cells do not
d. Prokaryotic cells do not have a membrane-bound
nucleus, but eukaryotic cells do have such a
nucleus.
e. Prokaryotic cells have ribosomes, but eukaryotic
cells do not have ribosomes.
•
3. Which of these best distinguishes a
prokaryotic cell from a eukaryotic cell?
a. Prokaryotic cells have a cell wall, but eukaryotic
cells never do.
b. Prokaryotic cells are much larger than eukaryotic
cells
c. Prokaryotic cells have flagella, but eukaryotic
cells do not
d. Prokaryotic cells do not have a membrane-bound
nucleus, but eukaryotic cells do have such a
nucleus.
e. Prokaryotic cells have ribosomes, but eukaryotic
cells do not have ribosomes.

4. Which of these is not found in the nucleus?
a.
b.
c.
d.
e.
Functioning ribosomes
Chromatin that condenses to chromosomes
Nucleolus that produces rRNA
Nucleoplasm instead of cytoplasm
All forms or RNA

4. Which of these is not found in the nucleus?
a.
b.
c.
d.
e.
Functioning ribosomes
Chromatin that condenses to chromosomes
Nucleolus that produces rRNA
Nucleoplasm instead of cytoplasm
All forms or RNA

5. Vesicles from the ER most likely are on
their way to
a.
b.
c.
d.
e.
The
The
The
The
The
rough ER
lysosomes
Golgi apparatus
plant cell vacuole only
location suitable to their size

5. Vesicles from the ER most likely are on
their way to
a.
b.
c.
d.
e.
The
The
The
The
The
rough ER
lysosomes
Golgi apparatus
plant cell vacuole only
location suitable to their size

6. Lysosomes function in
a.
b.
c.
d.
e.
Protein synthesis
Processing and packaging
Intracellular digestion
Lipid synthesis
Production of hydrogen peroxide

6. Lysosomes function in
a.
b.
c.
d.
e.
Protein synthesis
Processing and packaging
Intracellular digestion
Lipid synthesis
Production of hydrogen peroxide

7. Mitochondria
a.
b.
c.
d.
e.
Are involved in cellular respiration
Break down ATP to release energy for cells
Contain grana and cristae
Are present in animal cells but not plant cells
All of these are correct

7. Mitochondria
a.
b.
c.
d.
e.
Are involved in cellular respiration
Break down ATP to release energy for cells
Contain grana and cristae
Are present in animal cells but not plant cells
All of these are correct

12. Which of the following organelles
contains its own DNA, suggesting they were
once independent prokaryotes?
a.
b.
c.
d.
e.
Golgi apparatus
Mitochondria
Chloroplasts
Ribosomes
Both b and c are correct

12. Which of the following organelles
contains its own DNA, suggesting they were
once independent prokaryotes?
a.
b.
c.
d.
e.
Golgi apparatus
Mitochondria
Chloroplasts
Ribosomes
Both b and c are correct

13. Which organelle most likely originated by
invagination of the plasma membrane?
a.
b.
c.
d.
e.
Mitochondria
Flagella
Nucleus
Chloroplasts
All of these are correct

13. Which organelle most likely originated by
invagination of the plasma membrane?
a.
b.
c.
d.
e.
Mitochondria
Flagella
Nucleus
Chloroplasts
All of these are correct

14. Which structures are found in a
prokaryotic cell?
a.
b.
c.
d.
Cell wall, ribosomes, thylakoids, chromosome
Cell wall, plasma membrane, nucleus, flagellum
Nucleoid, ribosomes, chloroplasts, capsule
Plasmid, ribosomes, enzymes, DNA,
mitochondria
e. Chlorophyll, enzymes, Golgi, plasmids

14. Which structures are found in a
prokaryotic cell?
a.
b.
c.
d.
Cell wall, ribosomes, thylakoids, chromosome
Cell wall, plasma membrane, nucleus, flagellum
Nucleoid, ribosomes, chloroplasts, capsule
Plasmid, ribosomes, enzymes, DNA,
mitochondria
e. Chlorophyll, enzymes, Golgi, plasmids

3. A phospholipid molecule has a head and
two tails. The tails are found
a.
b.
c.
d.
e.
At the surfaces of the membrane
In the interior of the membrane
Spanning the membrane
Where the environment is hydrophilic
Both a and b are correct

3. A phospholipid molecule has a head and
two tails. The tails are found
a.
b.
c.
d.
e.
At the surfaces of the membrane
In the interior of the membrane
Spanning the membrane
Where the environment is hydrophilic
Both a and b are correct
•
4. During diffusion,
a. Solvents move from the area of higher to lower
concentration, but solutes do not.
b. There is a net movement of molecules from the
area of higher to lower concentration.
c. A cell must be present for any movement of
molecules to occur.
d. Molecules move against their concentration
gradient if they are small and charged.
e. All of these are correct.
•
4. During diffusion,
a. Solvents move from the area of higher to lower
concentration, but solutes do not.
b. There is a net movement of molecules from the
area of higher to lower concentration.
c. A cell must be present for any movement of
molecules to occur.
d. Molecules move against their concentration
gradient if they are small and charged.
e. All of these are correct.
•
5. When a cell is placed in a hypotonic
solution,
a. Solute exits the cell to equalize the concentration
on both sides of the membrane.
b. Water exits the cell toward the area of lower
solute concentration.
c. Water enters the cell toward the area of higher
solute concentration.
d. Solute exits and water enters the cell.
e. Both c and d are correct.
•
5. When a cell is placed in a hypotonic
solution,
a. Solute exits the cell to equalize the concentration
on both sides of the membrane.
b. Water exits the cell toward the area of lower
solute concentration.
c. Water enters the cell toward the area of higher
solute concentration.
d. Solute exits and water enters the cell.
e. Both c and d are correct.
•
6. When a cell is placed in a hypertonic
solution,
a. Solute exits the cell to equalize the concentration
on both sides of the membrane.
b. Water exits the cell toward the area of lower
solute concentration.
c. Water exits the cell toward the area of higher
solute concentration.
d. Solute exits and water enters the cell.
e. Both a and c are correct.
•
6. When a cell is placed in a hypertonic
solution,
a. Solute exits the cell to equalize the concentration
on both sides of the membrane.
b. Water exits the cell toward the area of lower
solute concentration.
c. Water exits the cell toward the area of higher
solute concentration.
d. Solute exits and water enters the cell.
e. Both a and c are correct.

7. Active transport
a. Requires a carrier protein.
b. Moves a molecule against its concentration
gradient.
c. Requires a supply of chemical energy
d. Does not occur during facilitated transport.
e. All of these are correct.

7. Active transport
a. Requires a carrier protein.
b. Moves a molecule against its concentration
gradient.
c. Requires a supply of chemical energy
d. Does not occur during facilitated transport.
e. All of these are correct.

8. The sodium-potassium pump
a. Helps establish an electrochemical gradient
across the membrane.
b. Concentrates sodium on the outside of the
membrane.
c. Uses a carrier protein and chemical energy.
d. Is present in the plasma membrane.
e. All of these are correct.

8. The sodium-potassium pump
a. Helps establish an electrochemical gradient
across the membrane.
b. Concentrates sodium on the outside of the
membrane.
c. Uses a carrier protein and chemical energy.
d. Is present in the plasma membrane.
e. All of these are correct.

9. Receptor-mediated endocytosis
a.
b.
c.
d.
e.
Is no different from phagocytosis
Brings specific solutes into the cell
Helps concentrate proteins in vesicles
Results in high osmotic pressure
All of these are correct

9. Receptor-mediated endocytosis
a.
b.
c.
d.
e.
Is no different from phagocytosis
Brings specific solutes into the cell
Helps concentrate proteins in vesicles
Results in high osmotic pressure
All of these are correct
•
10. Plant cells
a. Always have a secondary cell wall, even though
the primary one may disappear
b. Have channels between cells that allow strands of
cytoplasm to pass from cell to cell
c. Develop turgor pressure when water enters the
nucleus
d. Do not have cell-to-cell junctions like animal
cells.
e. All of these are correct
•
10. Plant cells
a. Always have a secondary cell wall, even though
the primary one may disappear
b. Have channels between cells that allow strands of
cytoplasm to pass from cell to cell
c. Develop turgor pressure when water enters the
nucleus
d. Do not have cell-to-cell junctions like animal
cells.
e. All of these are correct
•
12. The fluid-mosaic model of membrane
structure refers to
a.
The fluidity of proteins and the pattern of
phospholipids in the membrane.
b. The fluidity of phospholipids and the pattern of
proteins in the membrane
c. The fluidity of cholesterol and the pattern of
carbohydrate chains outside the membrane
d. The lack of fluidity of internal membranes compared
to the plasma membrane, and the ability of proteins
to move laterally in the membrane
e. The fluidity of hydrophobic regions, proteins, and the
mosaic pattern of hydrophilic regions.
•
12. The fluid-mosaic model of membrane
structure refers to
a.
The fluidity of proteins and the pattern of
phospholipids in the membrane.
b. The fluidity of phospholipids and the pattern of
proteins in the membrane
c. The fluidity of cholesterol and the pattern of
carbohydrate chains outside the membrane
d. The lack of fluidity of internal membranes compared
to the plasma membrane, and the ability of proteins
to move laterally in the membrane
e. The fluidity of hydrophobic regions, proteins, and the
mosaic pattern of hydrophilic regions.

13. Which of the following is NOT a function
of proteins present in the plasma membrane?
Proteins
a.
b.
c.
d.
e.
Assist the passage of materials into the cell
Interact and recognize other cells
Bind with specific hormones
Carry out specific metabolic reactions
Produce lipid molecules

13. Which of the following is NOT a function
of proteins present in the plasma membrane?
Proteins
a.
b.
c.
d.
e.
Assist the passage of materials into the cell
Interact and recognize other cells
Bind with specific hormones
Carry out specific metabolic reactions
Produce lipid molecules

14. The carbohydrate chains projecting from
the plasma membrane are involved in
a.
b.
c.
d.
Adhesion between cells
Reception of molecules
Cell-to-cell recognition
All of these are correct

14. The carbohydrate chains projecting from
the plasma membrane are involved in
a.
b.
c.
d.
Adhesion between cells
Reception of molecules
Cell-to-cell recognition
All of these are correct

15. Plants wilt on a hot summer day because
of a decrease in
a.
b.
c.
d.
Turgor pressure
Evaporation
Condensation
Diffusion

15. Plants wilt on a hot summer day because
of a decrease in
a.
b.
c.
d.
Turgor pressure
Evaporation
Condensation
Diffusion

16. The extracellular matrix
a. Assists in the movement of substances across
the plasma membrane
b. Prevents the loss of water when cells are placed
in a hypertonic solution
c. Has numerous functions that affect the shape
and activities of the cell that produced it
d. Contains the junctions that sometimes occur
between cells
e. All of these are correct

16. The extracellular matrix
a. Assists in the movement of substances across
the plasma membrane
b. Prevents the loss of water when cells are placed
in a hypertonic solution
c. Has numerous functions that affect the shape
and activities of the cell that produced it
d. Contains the junctions that sometimes occur
between cells
e. All of these are correct