Which of the following statements about RNA polymerase in bacteria is INCORRECT?
A. It binds the promoter region of a gene.
B. It dissociates from the DNA at the terminator.
C. It is bound to a sigma factor during initiation of transcription.
D. It synthesizes RNA.
E. It catalyzes the addition of nucleotides to the 5?end of a growing RNA strand.
Answer: E
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Droplet nuclei typically travel no farther from point of release than
A. 3 meters. B. 5 meters. C. 1 meter. D. They are suspended indefinitely.
Of the following factors, which is/are used to classify marine organisms as plankton, nekton, or benthos? Choose all that apply.
What will be an ideal response?
The scientific name of humans is Homo sapiens. What is the genus of humans?
A. Homo B. Animalia C. Eukarya D. Sapiens
Internal fertilization is more advantageous than external fertilization because it:
a. permits cross-species fertilization. b. is more open to chance. c. produces a motile egg. d. increases the life span of gametes. e. provides a protective environment for gamete fusion.