the mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is most precisely described as:

i think the answer would d

"d.) carbon dioxide and hydrogen sulfide"

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.