AP Biology MCQ
AP Biology Chapter 9
In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. First, however, the pyruvate 1) loses a carbon, which is given off as a molecule of CO2. 2) is oxidized to form a two-carbon compound called acetate and 3) is bonded to coenzyme A How does the pyruvate enter the mitochondrion?
In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. First, however, the pyruvate 1) loses a carbon, which is given off as a molecule of CO2. 2) is oxidized to form a two-carbon compound called acetate and 3) is bonded to coenzyme A How does the pyruvate enter the mitochondrion?
In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. First, however, the pyruvate 1) loses a carbon, which is given off as a molecule of CO2. 2) is oxidized to form a two-carbon compound called acetate and 3) is bonded to coenzyme A
How does the pyruvate enter the mitochondrion?
A. Active transport
B. Diffusion
C. Facilitated diffusion
D. Through a channel
E. Through a pore
Answer: A
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