Cell membranes are made of phospholipids to keep the cell's water (cytoplasm) in and everything else out. so your answer would be D <span />
The correct answer for this question would be C) At seafloor spreading centers or the third option.
The target cells of FSH are the Sertoli cells of the testes and the granulosa cells of the ovary.
The answer is d b/c smaller cells will have greater surface area to volume ratio
