Which of these is an electron carrier molecule?

A. ATP
B. Carbonic acid
C. Adenylate kinase
D. NAD+


Answer: D

Biology & Microbiology

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The ability of glucose to repress the lac operon depends on which effector molecules?

A. allolactose B. cAMP C. tryptophan D. ADP E. starch

Biology & Microbiology

When reduction in population size is severe, it is known as _______.

A. fixed B. founder effect C. adaptive radiation D. bottleneck E. gene flow

Biology & Microbiology

Scleroderma is a disorder that can be caused by

A) retained fetal cells with surfaces that are similar to the mother's cells. B) retained fetal cells with surfaces that are very different from those of the mother. C) retained fetal cells with surfaces that are similar to the father's cells. D) repeated exposure to the scleroderma virus.

Biology & Microbiology

Which one of these is not a gymnosperm?

1.Cycadophytes 2.Ginkgophyta 3.Gnetophytes 4.Chloranthales

Biology & Microbiology