NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which enzyme is responsible for elongating the mRNA strand?
A
DNA polymerase
B
RNA polymerase
C
Promoter region
D
Ribosome
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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