The first group to undergo mitosis was the _____________.
a. plants
b. bacteria.
c. protists
d. fungi
Answer: c. protists
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Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter. Propose a chemical basis for this change from a liquid to a solid
A. Hydrogenation of fats changes them from saturated to unsaturated, which are more solid. B. Trans-fatty acids are changed from unsaturated to saturated, allowing them to solidify. C. Trans fatty acids are changed from saturated to unsaturated, allowing them to solidify. D. Hydrogenation of fats changes them from unsaturated to saturated, which are more solid.
Pathogens are able to produce enzymes that directly destroy or inactivate antibodies. These enzymes are referred to as:
a. proteases. b. nucleases. c. collagenases. d. polymerases.
The Coriolis effect is:
a. the downwelling of seawater at the equator. b. the upwelling of seawater at the equator. c. the apparent deflection of the path of air and water. d. the reduction of air speed over the ground as one goes from the equator to the poles.
What happens to the population size when the birth rate is much larger than the death rate?
a. It remains at an equilibrium. b. It grows to K very quickly. c. It grows to K, but very slowly. d. The population declines.