DNA damage by UV radiation causes the synthesis of
a. p53.
b. DNA.
c. Cdk.
d. cyclin.
e. p21.
Ans: e. p21.
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You are surveying biodiversity on a new island chain. You have counted the number of bat species on one island already. The next island is smaller and farther from the mainland than the one you have just surveyed
According to the theory of island biogeography, the total number of its bat species should be ____ than on the current island because the rate of immigration to the new island should be ____ and the rate of extinction should be ____ . Refer to Figure 46.17 in your text for help. Fill in the blank with the appropriate word.
A small tear in a ligament is called a
a. strain. b. fracture. c. bruise. d. dislocation. e. sprain.
Shigellosis can be differentiated from salmonellosis by:
A) The presence of nonmotile noncoliforms B) The presence of bloody diarrhea C) The lack of fever D) The presence of nonmotile noncoliforms in bloody diarrhea E) Abdominal cramps and fever
Biological species consist of groups of ________.
A) populations B) domains C) families D) genera