Identify
the letter of the choice that best completes the statement or answers the question.
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1. |
Hydrophobic
reactions of phospholipids can produce clusters of their fatty acid tails to form
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hydrolysis
of the fatty acids.
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2. |
If
a plasma membrane were compared to a sandwich, __________ would be considered the filling.
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3. |
In
an attempt to visualize the fluid mosaic model of a membrane, we could describe the
__________ as floating in a sea of __________.
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phospholipids;
carbohydrate
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4. |
A
transport protein is most analogous to a
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voice
identification device.
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5. |
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the
rate of movement of molecules is controlled by temperature and pressure.
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the
movement of individual molecules is random.
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the
movement of molecules of one substance is independent of the movement of any other
substance.
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the
net movement is away from the region of highest concentration.
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6. |
Oxygen,
carbon dioxide, glucose, and other small molecules cross the plasma membrane through the
process(es) of
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endocytosis
and exocytosis.
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7. |
Which
of the following is NOT a form of active transport?
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8. |
The
sodium-potassium pump is an example of
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9. |
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A
cell placed in an isotonic solution will swell.
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A
cell placed in a hypotonic solution will swell.
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A
cell placed in a hypotonic solution will shrink.
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A
cell placed in a hypertonic solution will remain the same size.
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A
cell placed in a hypotonic solution will remain the same size.
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10. |
If
a plant cell is placed in a hypotonic solution,
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the
entire cell will not swell or shrink.
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the
entire cell will shrink.
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the
turgor pressure will increase.
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the
cell wall prevents the cell from exploding.
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the
turgor pressure will increase but the cell wall prevents the cell from exploding.
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11. |
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the
cell's capacity to acquire energy.
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cellular
processes used to store substances.
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reactions
that break apart nutrients to release energy.
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the
elimination of waste products.
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12. |
According
to the first law of thermodynamics,
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although
energy in the universe is constant, energy in an earthly system may increase.
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the
amount of energy in the universe is constant.
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chemical
reactions do not create or destroy energy.
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energy
can change from one form to another.
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13. |
Which
reaction is NOT an exergonic reaction?
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14. |
Which
of the following statements about exergonic reactions is NOT true?
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Glucose
metabolism is an example.
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Their
products have more energy than the reactants.
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15. |
A
molecule that gives up an electron becomes
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16. |
An
orderly sequence of reactions with specific enzymes acting at each step is the definition
of
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17. |
During
enzyme-catalyzed reactions, substrate is a synonym for
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18. |
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have
special shapes that control their activities.
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19. |
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is
less when enzymes are present.
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allows
greater interaction of substrate with the active site.
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is
needed to begin a reaction.
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is
less when enzymes are present and is needed to begin a reaction.
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is
less when enzymes are present, allows greater interaction of substrate with the active
site, and is needed to begin a reaction.
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20. |
The
ultimate source for food is
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various
metabolic pathways found in all living organisms.
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21. |
The
carbon source for organisms that derive their energy from photosynthesis is
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22. |
The
internal membrane system of the chloroplast is called a
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23. |
Thylakoid
disks are stacked in groups called
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24. |
Which
of the following statements is NOT true?
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Photons
are packages of solar energy.
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The
longer the wavelength of light, the more energy it has.
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Chlorophyll
absorbs energy from light.
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Photons
with different energy levels produce different colors.
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Visible
light is a very small portion of the electromagnetic spectrum.
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25. |
Which
of the following colors of light has the greatest energy?
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26. |
The
first event of photosynthesis is the
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transfer
of an electron from chlorophyll.
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27. |
Where
in a plant cell is chlorophyll found?
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on
the outer chloroplast membrane
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28. |
ATP
is formed when __________ the thylakoid compartment.
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29. |
Which
of the following is NOT one of the chemicals produced in the synthesis (light-independent)
reactions?
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phosphoglyceric
acid (PGA)
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phosphoglyceraldehyde
(PGAL)
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30. |
In
most complex plants, the excess glucose is stored as
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31. |
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32. |
Four
of the five answers listed below result when a cell is placed in a hypertonic solution.
Select the exception.
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33. |
Four
of the five answers listed below are related by energy requirements. Select the exception.
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34. |
Four
of the five answers listed below are related to the second law of thermodynamics. Select
the exception.
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Energy
can be neither created nor destroyed.
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The
amount of available energy in a closed system declines with time.
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Energy
is lost as it is transferred or transformed to another form.
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Spontaneous
flow of energy from high- to low-quality forms occurs.
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35. |
Four
of the five answers listed below are heterotrophs. Select the exception.
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36. |
Four
of the five answers listed below are participants in photosynthesis. Select the exception.
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