An activator protein would have which of the following effects on an operon with a positive control
mechanism?
a. stimulate transcription
b. turn off transcription
c. stimulate transcription when a coactivator is bound to the allosteric site
d. inhibit transcription when a coactivator is bound to the allosteric site
e. no response
C
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DNA vaccines ____
a. use RNA to assist in the transformation process b. have been created but are ineffective c. show promise in animal studies and are now in clinical trials d. have been approved by the government to fight several diseases e. sometimes infect the subject with the disease it's attempting to fight
What does the vascular system do in plants?
A. It is the main site of photosynthesis in plants. B. It allows for the transport of water, sugar and minerals. C. It is the main system that prevents dehydration in plants. D. It protects the plant's reproductive systems.
Bacteriophages may multiply by a(n) __________ pathway in which the new viral particles are made quickly and
released by lysis. Fill in the blank(s) with the appropriate word(s).
In Figure 16.1, how many mL is the residual volume?
A) 600 B) 1700 C) 2800 D) 2200 E) 1300