Which of the following evolve?
a. populations
b. genera
c. kingdoms
d. populations and genera
e. genera and kingdoms
A
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Incubation of cells at 20°C blocks the release of proteins from the trans-Golgi. Under such conditions, you would expect to see
A. an increase in exocytosis. B. a decrease in exocytosis. C. an increase in endocytosis. D. a decrease in endocytosis.
In a trophic pyramid, the biomass of lower trophic levels is typically much greater compared to that of higher levels. What does this tell you about the transfer of energy between trophic levels? Select all that apply
A. Energy does not move from lower to higher trophic levels. B. Energy is gained as it moves from lower to higher trophic levels. C. Energy is lost as it moves from lower to higher trophic levels. D. The amount of energy remains the same as it moves between trophic levels.
A positive tuberculin skin test, or PPD test, is characterized by:
a. erythema and induration. b. redness and rash. c. swelling and erythema. d. edema and rash.
Which scientist(s) discovered the basis for the basepair
rule, which states that the amounts of adenine and thymine match, as do the amounts of cytosine and guanine? a. Avery b. Griffith c. Chargaff d. Hershey and Chase e. Pauling