LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence
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RNA polymerase is an enzyme that unzips DNA
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RNA polymerase is a protein that reads DNA
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RNA polymerase is a gene responsible for cancer
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Detailed explanation-1: -RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.
Detailed explanation-2: -RNA polymerase (RNApol) is a multi-unit enzyme that is responsible for creating a complimentary strand of nucleic acid, called RNA, from a single stranded DNA template through the incorporation of adenosine, cytosine, guanine and uracil nucleotides. The process by which this occurs is called transcription.
Detailed explanation-3: -This statement is false. The enzyme DNA polymerase, not RNA polymerase, is responsible for synthesizing a new strand of DNA during DNA replication. In DNA replication, the two strands of DNA are separated, and DNA polymerase enzymes synthesize new strands complementary to each of the original strands.
Detailed explanation-4: -The task of transcribing nuclear genes is shared between three RNA polymerases in eukaryotes: RNA polymerase (pol) I synthesises the large rRNA, pol II synthesises mRNA and pol III synthesises tRNA and 5S rRNA.