Some reptiles, like snakes, have olfactory receptors on their tongues on the roof of their mouths on their skin at the tip of their tails

Match the digestive enzymes to the macromolecules they to digest. break down fats into glycerol and fatty acids break down carbohydrates into simple sugars break down nucleic acids into nitrogenous bases and simple sugars break down proteins into amino acids

Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.

Give examples of selective advantage of organism’s body part/organ