CELL BIOLOGY. Please answer the following questionsand please please please be 1

Question

CELL BIOLOGY. Please answer the following questionsand please please please be 100% sure on them. if not, plz dont answer it. thank you so much. I know the last picture is blurry but please try to make it out.. thank you

26. What is the function of topoisomerase (DNA gyrase) in DNA replication? a. It unwinds the DNA using ATP hydrolysis it binds to single stranded DNA to prevent separated strands from re-annealing It prevents the DNA from supercoiling by nicking (and repairing) the DNA, allowing the DNA to rotate b. d It synthesizes new chromosomal ends 27. If a bacteria had a mutation lacking DNA polymerase II, that bacterium wou thus be defective in DNA replication of leading strand DNA repair f the follnwino causes hase-nair mismatch errors? C- Removat of primers fromlagging strand d. All of the above

Explanation / Answer

26. A unwinds DNA

27. DNA replication of leading strand (repair is done by polymerase 1)

53. All are correct

54. A cytoplasm: rRNA and proteins

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