What is the main function of the krebs cycle apex?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast

Explain how negative feedback caused the changes in plasma glucagon concentration observed during the experiment.