NEET Biology question

RNA polymerase contains multiple polypeptide units. For initiating RNA synthesis it requires

(A)σ (sigma) subunitCorrect
(B)α (alpha) subunit
(C)ρ (rho) factor
(D)Spliceosome

Answer: (A)

Solution

Bacterial RNA polymerase holoenzyme consists of a core enzyme plus a sigma (σ) factor, and it is the sigma factor that enables the enzyme to recognise the promoter and correctly

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Question ID VK-120498