Members of the ____ phylum have radial symmetry, nematocysts,and polyp and/or medusa body forms as adults
a. Nematoda
b. Cnidaria
c. Porifera
d. Rotifera
e. Ctenophora
ANSWER: b
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Which of the following would most likely undergo the fastest rate of evolutionary change?
A. an annual plant B. a blue whale C. a human D. a giant sequoia tree E. bacteria
What term is used to indicate a relatively new characteristic, in an evolutionary sense?
a. homologous trait b. analogous trait c. cladistic trait d. ancestral trait e. derived trait
Tetherin is an important protein produced by the host. What is the function of tetherin in protecting a host cell from HIV?
A) ties maturing virions to the membrane of the host cell, thereby preventing the release of the mature virus B) binds the virus to the external host cell membrane, thereby preventing the virus from entering the host cell C) binds the viral RNA to reverse transcriptase, thus preventing synthesis of the viral DNA D) binds the two viral RNA strands together, thus preventing the transcription of viral DNA in the host cell E) causes the maturing virions to aggregate together, thus preventing their release from the host cell
A pancreatic hormone that promotes the release of free fatty acids from adipose tissue, their conversion to ketones, and the use of both as sources of energy
What will be an ideal response?