Reproduction of a cell from an existing cell
Answer:
From the given information, the transport of glucose in blood across the red blood cells takes place by facilitated diffusion, that involves the spontaneous passive-transport with the help of trans-membrane proteins or transporter proteins to move the ions or molecules down the concentration gradient.
While the transport of glucose in intestines take place via active transport mechanism. It takes place from gut into intestines. It occurs against the concentration gradient with the help of energy molecules like proteins.
The correct answer is option D
the pineal gland releases melatonin into the bloodstream
In the exocrine system the organ releases certain substance other than hormone while in the endocrine system , the organs releases hormones.
In option D, melatonin is a hormone released by pineal gland and thus it is an endocrine function
