When does the ? subunit dissociate from RNA polymerase?
A. after promoter clearance
B. at the termination of transcription
C. immediately after promoter binding
D. immediately before promoter binding
E. not until the enzyme is degraded
A
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One reason that the effects of individual genes on complex traits can be difficult to determine is that:
A. environmental effects cannot be measured. B. environmental effects are so large that genetic effects cannot be measured. C. a single phenotype may be produced by many different genotypes. D. neither environmental nor genetic effects can be measured. E. genetic effects cannot be measured, regardless of the effects of the environment.
The primary targets for HIV are ____
a. helper T cells and macrophages b. helper T cells and cytotoxic T cells c. B cells, helper T cells, and cytotoxic T cells d. B cells and helper T cells e. B cells and macrophages
A cell that is most likely to retain the ability to divide, perform metabolic functions, and store photosynthate would be a
a. parenchyma cell in a leaf. b. vessel element in the vascular system. c. endodermal cell in a root. d. bark cell. e. fiber cell.
The olfactory bulb in fish help with
A) smell B) balance C) vision D) color deciphering