Multiple Choice
Identify
the letter of the choice that best completes the statement or answers
the question.
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1.
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The
ultimate source for food is
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a.
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the grocery store.
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b.
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the
soil.
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c.
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certain green plants.
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d.
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the
sun.
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e.
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various
metabolic pathways found in all living organisms.
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2.
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Most
carbon enters the web of life through
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a.
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chemosynthesis.
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b.
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aerobic
respiration.
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c.
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anaerobic respiration.
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d.
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photosynthesis.
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e.
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both chemosynthesis and aerobic
respiration.
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3.
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Chlorophyll reflects (does not absorb) which color of light?
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a.
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red
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b.
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yellow
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c.
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orange
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d.
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green
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e.
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blue
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4.
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The
light-dependent reactions of photosynthesis
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a.
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involve photolysis of water.
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b.
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occur
in mitochondria.
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c.
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consist of the fixation of carbon dioxide.
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d.
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produce phosphoglyceric acid as their
first stable compound.
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e.
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none of these
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5.
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The
chemiosmotic model is based upon
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a.
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the use of two photosystems in
photosynthesis.
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b.
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the idea that concentration and hydrogen
ion gradients drive ATP production.
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c.
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the cyclic pathway as the oldest method to
produce ATP.
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d.
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the
use of light to split water molecules in the noncyclic pathway.
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e.
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the
polarity and high specific heat of water.
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6.
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The
carbon dioxide acceptor in the Calvin-Benson cycle is
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a.
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phosphoglycerate
(PGA).
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b.
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ribulose bisphosphate (RuBP).
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c.
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phosphoglyceraldehyde (PGAL).
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d.
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glucose.
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e.
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phosphoenol pyruvate.
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7.
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Which
of the following chemicals has the most energy?
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a.
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phosphoglycerate (PGA)
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b.
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ribulose
bisphosphate (RuBP)
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c.
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phosphoglyceraldehyde (PGAL)
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d.
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glucose
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e.
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oxaloacetate
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8.
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Plants need which of the following to carry on photosynthesis?
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a.
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carbon
dioxide and water
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b.
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nitrogen and hydrogen
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c.
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oxygen
and carbon dioxide
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d.
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water and oxygen
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e.
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ribose
and carbon dioxide
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9.
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Which
of the following has the greatest total energy?
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a.
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cAMP
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b.
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ADP
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c.
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ATP
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d.
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glucose
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e.
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N
ADPH
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10.
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The
process by which a small amount of the energy in a glucose molecule is
released, as it is converted into two small organic acid molecules
(pyruvate), is called
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a.
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photolysis.
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b.
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glycolysis.
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c.
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oxidative phosphorylation.
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d.
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substrate-level
phosphorylation.
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e.
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the Krebs cycle.
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11.
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The
energy used to generate most of the ATP formed in aerobic respiration
is released when electrons are passed from NADH to
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a.
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oxygen.
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b.
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acetyl
CoA.
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c.
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FADH.
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d.
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CO2.
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e.
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NADPH.
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12.
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Which
of the following statements is true?
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a.
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According to chemiosmotic theory,
concentration and electric gradients drive the formation of ATP.
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b.
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Each time an electron is transferred down
the electron transport system, it loses energy.
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c.
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There is a buildup of hydrogen in the
outer compartment of the mitochondrion.
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d.
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ATP synthases are channels for the passage
of hydrogen ions.
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e.
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All of these statements are true.
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13.
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Fermentation
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a.
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may occur in a muscle under anaerobic
conditions.
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b.
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produces more ATP than is liberated in the
hydrogen transfer series.
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c.
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breaks down glucose in reaction with
oxygen.
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d.
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is restricted to yeasts.
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e.
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none
of these
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Other
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14.
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Four
of the five answers listed below are part of the light-independent
reactions. Select the exception.
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a.
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water
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b.
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carbon dioxide
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c.
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ribulose bisphosphate
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d.
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phosphoglyceraldehyde
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e.
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phosphoglycerate
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15.
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Four
of the five answers listed below are processes associated with
light-independent reactions. Select the exception.
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a.
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uses ATP and NADPH
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b.
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involves RuBP
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c.
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produces PGA
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d.
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is called the Calvin-Benson cycle
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e.
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requires light
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