Immunological memory results from the production of
A. memory B cells and memory cytotoxic T cells.
B. mast cells and memory B cells.
C. memory mast cells.
D. memory B cells.
E. memory cytotoxic T cells.
A. memory B cells and memory cytotoxic T cells.
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Pheromones
a. are signaling molecules. b. are released by one individual and influence other individuals of the same species. c. diffuse through the air d. help to regulate honeybee behavior. e. do all of these.
The wings of bats and birds and the streamlined body form of sharks and whales represent examples of ________
A) convergence B) reversal C) outgroups D) a clade
As much as ________ of the bacteria isolated from human feces belong to the genus Bacteroides.
A. 90% B. 2.0% C. 30% D. 0.1%
Which of the following is NOT a characteristic of Okazaki fragments?
A) They are checked for accuracy by DNA polymerase III. B) They make up the lagging strand of replicated DNA. C) They begin with an RNA primer. D) They are joined together by DNA ligase. E) They are longer in eukaryotic cells.