RNA polymerase has subunit:
Correct answer: B. Sigma factor
- A. Alpha factor
- B. Sigma factor
- C. Beta factor
- D. Gama factor
Explanation
In bacterial RNA polymerase, the sigma (σ) factor is indeed an essential subunit. The sigma factor associates with the core enzyme to form the holoenzyme, which is responsible for recognizing and binding to specific promoter sequences on DNA to initiate transcription.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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