Ribosomes produce proteins and the nucleus is the main control center for the cell
Answer:
Sigma factor is the name of the protein and it helps RNA polymerase to recognize promoter.
Explanation:
RNA polymerase is the enzyme which helps in the transcription of DNA duplex. In bacteria, a protein called sigma factor is present in RNA polymerase which is responsible for the initiation of transcription.
The sigma factors gives the ability to RNA polymerase to recognize the promoter sequence. If the sigma factor is not present in RNA polymerase than this enzyme can not distinguish between promotor and other sequences.
So the sigma factor increases the affinity of RNA polymerase towards promoter and helps in initiation of the transcription. Sigma factor gets released from the core enzyme when the chain reaches 8-9 bases.
Prokaryotic<span> cells are a group of organisms whose cells don't have a cell, nucleus, or any other membrane bound organelles. A </span>virus<span> is a small infectious agent that can replicate only inside the living cells .</span>
- Can change in the structure of chromosome affect in health and development . These changes can affect many genes along the chromosomes and disrupt the proteins made from those genes.
_-_ hOpe that this really helpss youu well, and have a GREAT BRAINLY DAY .
Organisms from all six kingdoms have DNA but some are not enclosed inside the nucleus but scattered in the cytoplasm.Only eukaryotes have nuclei where DNA strands are enclosed.
