Biology 1401 Chapter 7 How Cells Harvest Energy

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1.  Since membranes are relatively impermeable to ions, most of the protons re-enter the matrix of mitochondria by passing through special channels in the inner mitochondrial membrane. Because of the inward flow of protons these channels allow the synthesis of
A.
B.
C.
D.
E.
2.  During respiration the final acceptor of the hydrogen atoms is
A.
B.
C.
D.
E.
3.  The enzymes catalyzing the reactions of glycolysis are found in the
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B.
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D.
E.
4.  A single glucose molecule can drive the Krebs cycle
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B.
C.
D.
E.
5.  In the cyclic reaction sequence called the Krebs cycle, the following chemical events take place except
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B.
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D.
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6.  The decarboxylation of pyruvate produces all of the following except
A.
B.
C.
D.
7.  A process common to all living organisms, aerobic and anaerobic, is
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D.
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8.  The end-product of glycolysis is
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9.  In eukaryotes, the glycolytic reactions take place in the
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D.
E.
10.  Select the correct sequence concerning glucose catabolism.
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B.
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D.
11.  The coenzyme electron carriers produced in the Krebs cycle are
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D.
E.
12.  Which of the following statements abotu fermentation is false?
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B.
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D.
E.
13.  In the absence of oxygen, hydrogen atoms generated by glycolysis are donated to organic molecules in a process called
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14.  The enzymes of the Krebs cycle are located in the
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B.
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D.
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15.  The oxygen utilized in cellular respiration finally shows up as
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B.
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D.
E.
16.  The reaction, C(6)H(12)O(6) + 6O(2) = 6 CO(2) + 6 H(2)O, when it occurs in living cells is known as
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B.
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D.
E.
17.  Regardless of the electron or hydrogen acceptor used, one of the products of fermentation is always
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D.
E.
18.  In oxidative respiration, energy is harvested from glucose molecules in a sequence of four major pathways. Which of the following is not one of these four pathways?
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B.
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D.
E.
19.  An electron carrier that is used in harvesting energy from glucose molecules in a series of gradual steps in the cytoplasm is
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B.
C.
D.
E.
20.  A molecule that stores energy by linking charged phosphate groups each other is called
A.
B.
C.
D.
E.
21.  The first stage of cellular respiration is
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B.
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D.
E.
22.  The decarboxylation step of oxidation of pyruvate takes place in the
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B.
C.
D.
E.
23.  In muscle cells, fermentation produces not alcohol but
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B.
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D.
E.
24.  Chemiosmotic generation of ATP is driven by
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B.
C.
D.
E.
25.  All of the following are the end products of glycolysis except
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B.
C.
D.
E.
26.  Yeast cells under anaerobic conditions
A.
B.
C.
D.
E.
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