OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RNA primase is used show where DNA polymerase III is to attach to add nucleotides on the exposed lagging strand. What is the name of the promoter strand on the DNA lagging strand called?
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telomere
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TATA box
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primer
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topoisomerase
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Explanation:
Detailed explanation-1: -The stabilization of the primer by DNA primase is necessary for DNA polymerase to initiate synthesis. DNA polymerases cannot initiate synthesis of DNA de novo, requiring a 3′-hydroxyl terminated primer positioned at the catalytic site.
Detailed explanation-2: -In eukaryote cells, RNA polymerase III (also called Pol III) is a protein that transcribes DNA to synthesize 5S ribosomal RNA, tRNA and other small RNAs. The genes transcribed by RNA Pol III fall in the category of “housekeeping” genes whose expression is required in all cell types and most environmental conditions.
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