While most organs will grow until maturity (when you stop getting taller), the will get bigger throughout childhood, but it will slowly shrink from once an individual reaches puberty and will continue to shrink throughout adulthood. as this gland shrinks, its tissues are replaced by tissues that are stored in fat cells (called adipose tissue). the reason it shrinks is because the thyroid has a reduced role during adulthood.

Question 1 which of the following allows cells to take in fluids? a. phagocytosis b. pinocytosis c. exocytosis d. receptor-mediated endocytosis question 2 molecules move along their concentration gradient (from areas of high concentration to low concentration) using active transport mechanisms. a. true b. false question 3 which of the following powers active transport (ie. provides the energy for)? a. glucose b. transport proteins c. atp d. phospholipids question 4 what type of lipid is a major component of the plasma membrane? a. cholesterol b. phosopholipids c. proteins d. triglycerides