Answer:
<h2>B</h2>
Explanation:
1. Gene regulation is the process of controlling which genes in a cell's DNA are expressed and finally used to synthesize a functional product such as a protein.
2. Gene expression can be controlled at many steps, like Chromatin accessibility, transcription, RNA processing, post transcription, translation and post translation etc.
3. As at transcription level, it can manipulate the ability of RNA polymerase to carry out its function, which can change the rate of transcription and finally alter gene expression.
Dark reaction requires ATP, NADPH, and carbon dioxide to produce glucose.
An organism that that doesn't have membrane bound organelles or a nucleus is classified as a prokaryote.
