A disease cause by a virus is _______.

A. flu
B. botulism
C. tuberculosis
D. two of the above


Answer: A. flu

Biology & Microbiology

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Burning fossil fuels has clearly resulted in

a. increases in atmospheric concentrations of carbon dioxide. b. increases in extinction rates. c. increases in concentrations of carbon dioxide in soils. d. increases of carbon retention in species. e. decreases in atmospheric concentrations of oxygen.

Biology & Microbiology

Which of the following is a common protist that can swim using a flagellum and is photosynthetic?

a. Red algae b. Ciliates c. Green algae d. Foraminiferans e. Brown algae

Biology & Microbiology

In the viable plate count method, a measured sample of a culture is evenly spread across an agar surface and incubated. Each ________ on the agar surface represents one ________ from the sample.

A. generation; cell B. cell; cell C. colony; cell D. cell; colony E. species; colony

Biology & Microbiology

A recessive gene for red-green color blindness is located on the X chromosome in humans. Assume that a woman with normal vision (her father is color blind) marries a color-blind male. What is the likelihood that this couple's first son will be color

blind? A) 100% B) 50% C) 25% D) 0% E) 75%

Biology & Microbiology