Question

which of the following is an increase in the number of receptors making a target cell more sensitive to a hormone?
multiple choice
enzyme amplification
negative feedback inhibition
down - regulation
up - regulation
the antagonistic effect

Explanation:

• Enzyme amplification: Refers to the process where a single enzyme molecule can catalyze the conversion of many substrate molecules, not related to receptor number change.
• Negative feedback inhibition: A regulatory mechanism that reduces the output of a system, not about receptor number increase.
• Down - regulation: Is a decrease in the number of receptors.
• Up - regulation: Specifically means an increase in the number of receptors, which makes the target cell more sensitive to the hormone.
• The antagonistic effect: Occurs when two hormones have opposite effects, not related to receptor number increase.

Answer:

Up - regulation