Small molecules are used as the basic units in the synthesis of large food molecules. Which statement is correct?

A. mino acids are basic units of carbohydrates.

B. Fatty acids are basic units of glycogen.

C. Glycerol is a basic unit of oils.

D. Simple sugar is a basic unit of protein.

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.