Answer:
enzyme are protein that speed chemical reaction ..
The steps for protein synthesis in order are:
1. Copy of one side of DNA strand is made (called mRNA, messenger RNA)
2. mRNA moves to cytoplasm, then ribosome.
3. mRNA goes through ribosome 3 bases at a time.
4. transfer RNA (tRNA) matches up with the open DNA bases.
5. tRNA releases the amino acid at the top, which joins the chain of amino acids being produced.
C i think ................................................
Answer:
D) presence of transcription activators or repressors
Explanation:
The reason why this is not post-transcriptional regulation is that activators actually start the process of transcription by binding to specific sites. while on contrary when repressor binds it halt the process.
For example, there is a protein called CAP which in the presence of cAMP bind with promoter region and enhances the activity of RNA polymerase . While in the absence of cAMP it can not bind to promoter hence the transcription stooped.
