What letter indicates a taste bud?
a. A
b. B
c. C
d. A and B
e. none of these, because they are olfactory receptors
ANSWER: a
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The group mollusks includes:
A. gastropods and cephalopods. B. sponges and placozoans. C. crustaceans and bivalves. D. starfish and cephalopods.
A gene that undergoes rho-dependent termination has a mutation in the rut site. How will this influence transcriptional activity?
A. Transcription will terminate normally as Rho termiantion relies on the rut site to enhance termination; it is not essential for termination B. Transcription will stop immediately because RNA polymerase will sense there is a mutation C. Transcription will continue until another termination sequence, either Rho dependent or independent is reached D. There will be no transcription initiation
During cell division the progeny of a trypanosome express a different VSG gene than their parents. Why is this done?
A. To hide from the host's immune system. B. To signal endocytosis of the parasites. C. VSG genes inhibit phagocytosis. D. VSG genes activate photoheterotrophy.
The insertion of a skeletal muscle is
a. attached to the less mobile portion of the skeleton. b. attached to the portion of the skeleton that moves when the muscle contracts. c. never attached to the skeleton. d. its belly.