Im not really sure , but it might have something to do with polar chemical compound <span />
Answer:
A & B
Explanation:
Same amount of protons but different numbers of neutrons.
Reaction. I hope this helped have a great day.
Oxygen, Silicon, Iron, Sodium, Aluminum, Calcium, Magnesium, Potassium
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.
