In eukaryotes, which topoisomerases can relax negative supercoiling?
A. topoisomerase I
B. topoisomerase II?
C. topoisomerase II?
D. type II topoisomerases only
E. All these topoisomerases can relax negative supercoiling.
E
Biology & Microbiology
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The process of producing food from inorganic compounds using high energy compounds as a source of energy is called:
a. photosynthesis. b. chemosynthesis. c. heterotrophy. d. grazing. e. solar irradiation.
Biology & Microbiology
Explain why grandsons of boys who survived a famine lived longer than grandsons of boys who did
not experience the famine? What will be an ideal response?
Biology & Microbiology
With the exception of gametes, a human cell contains __________ chromosomes.
A. 47 B. 23 C. 46 D. 2n
Biology & Microbiology
Refer to Figure 31-3. The structures labeled 1 are used for:A
feeding.
B. reproduction.
C. attachment.
D. movement.
E. protection.
Biology & Microbiology