I believe the answer is A
Answer:
granular cells of the juxtaglomerular apparatus
Explanation:
Renin or angiotensinogenase is a circulating enzyme released by granular cells of the juxtaglomerular apparatus of the kidney in response to a series of physiological stimuli and causes activation of the renin-angiotensin-aldosterone system.
Renin transforms angiotensinogen from the liver into angiotensin I, which is transformed into angiotensin II by the lungs.
Cell membrane is the answer!
During mitosis, the chromatin in the nucleus of a cell condenses and becomes visible under a microscope. The membrane around the nucleus breaks down.
