The enzyme responsible for oxidizing pyruvate once it enters the mitochondrial matrix is

A. pyruvate oxidase
B. pyruvate dehydrogenase.
C. hexokinase
D. ATP synthase.
E. peptidase.


B. pyruvate dehydrogenase.

Biology & Microbiology

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Athlete's foot is an example of a

A) protozoal infection. B) superficial fungal infection. C) superficial parasitic infection. D) hypersensitivity reaction.

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Both stages of photosynthesis occur in the daytime in _____ percent of plants

a. 10 b. 50 c. 90 d. 100

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Hydrogen ions have what effect on systemic arterioles?

A) vasodilation B) neither vasodilation or vasoconstriction, but may cause vasospasm C) vasospasm D) vasoconstriction and vasospasm E) vasoconstriction

Biology & Microbiology

A woman goes to her gynecologist and reports that she is experiencing pain during intercourse and frequently has an unusual vaginal discharge that is increased in quantity and sort of foamy. A vaginal smear shows normal appearing epithelial cells along

with small leaf-shaped cells with prominent oval nuclei. What disease is the woman experiencing? A) cervical cancer B) herpes C) leptospirosis D) syphilis E) trichomoniasis

Biology & Microbiology