The result obtained in Jacob and Monod's merodiploid analysis that suggested the lacO region acts in cis to regulate the lac operon was:
A. a nonfunctional lacI mutant is rescued by a wild-type lacI allele.
B. a nonfunctional lacI mutant cannot be rescued by a wild-type lacI allele.
C. a nonfunctional lacO mutant is rescued by a wild-type lacO allele.
D. a nonfunctional lacO mutant cannot be rescued by a wild-type lacO allele.
D
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Which of the following statements about RNA polymerase in bacteria is INCORRECT?
A. It binds the promoter region of a gene. B. It is bound to a sigma factor during initiation of transcription. C. It synthesizes RNA. D. It catalyzes the addition of nucleotides to the 5? end of a growing RNA strand. E. It dissociates from the DNA at the terminator.
Which type of blood component is involved in the initiation of clotting?
A. platelets B. plasma proteins C. white blood cells D. red blood cells
What do you need to adjust on a light microscope if the slide is not centered over the light beam emanating from the condenser?
A) Objective lens B) Stage C) Course focus D) Diaphragm
Which of the following would be considered a benefit of increased flexibility?
What will be an ideal response?