In humans body temperature is kept fairly constant by automatic responses controlled by which of the following? a. the hypothalamus b. heart rate c. the skin d. the amount of muscle

b. heterotroph

explanation:

while the heads of the phospholipid structure attract water, the tails are hydrophobic. the model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.