The reaction: pyruvate + CoA + NAD+ ? acetyl CoA + CO2 + NADH, is catalyzed by pyruvate dehydrogenase. If an inhibitor of this enzyme was added to cells, then ________ levels in the cytoplasm would increase.
A. CO2
B. pyruvate
C. NADH
D. acetyl CoA
Answer: B
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A. FADH2 B. ADP C. NAD+ D. Oxygen
Which of the following is NOT a morphogen?
A. Activin B. Noggin C. proteins D. Cadherin E. protein produced by Spemann's organizer (dorsal lip of a gastrula)
Which of the following is true of embryo
cloning? a. It occurs all the time in nature. b. It involves the genetic contribution of two parents. c. It produces identical offspring. d. "Artificial twinning" is a laboratory application of the process. e. All of these are true
Neurofibrillary tangles occur:a
in the neuron cytoplasm of patients with Alzheimer's disease. b. in the axon of patients with multiple sclerosis. c. in the glial cells of patients with myasthenia gravis. d. in the dendrites of patients with peripheral neuropathy. e. in the cell bodies of patients with depression.