The genetic material of viruses is composed of which of the following?

a) DNA
b) RNA
c) DNA or RNA
d) none of the above


Answer: c) DNA or RNA

Biology & Microbiology

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Glycolysis yields a net of 2 pyruvate, 2 NADH, and 2 ATP

a. True b. False

Biology & Microbiology

Chronic stress:a

is associated with elevated levels of glucocorticoids. b. may lead to the excessive stimulation of neurons. c. increases blood flow to the brain, especially the hippocampus. d. results in lower levels of epinephrine and norepinephrine. e. promotes the linear growth of the skeleton

Biology & Microbiology

The genes for mahogany eyes and ebony body are approximately 25 map units apart on chromosome III in Drosophila

Assume that a mahogany-eyed female was mated to an ebony-bodied male and that the resulting F1 phenotypically wild-type females were mated to mahogany, ebony males. Of 1000 offspring, what would be the expected phenotypes, and in what numbers would they be expected?

Biology & Microbiology

The malarial Plasmodium is difficult for the human immune system to fight off because:

a. as the Plasmodium moves through its series of distinct developmental stages, it produces different cell surface proteins. d. as the Plasmodium moves through its series of distinct developmental stages, it produces different DNA-transcription enzymes. e. it mimics human white blood cells.

Biology & Microbiology