NURSING EXAM QUESTIONS
MICROBIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which enzyme is responsible for elongating the mRNA strand?
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DNA polymerase
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RNA polymerase
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Promoter region
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Ribosome
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Explanation:
Detailed explanation-1: -The enzyme RNA polymerase, or RNAP, which has several forms, is responsible for elongating the RNA chain during the transcription of DNA.
Detailed explanation-2: -Because RNA polymerase II is responsible for the synthesis of mRNA from protein-coding genes, it has been the focus of most studies of transcription in eukaryotes.
Detailed explanation-3: -The Escherichia coli RNA polymerase (RNAP) is a multi-subunit enzyme composed of five subunits including (two copies), , ’ and subunits. These five subunits form the RNAP core enzyme responsible for RNA synthesis using DNA as template and ribonucleotide (rNTP) as substrate.
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