Which hormone is the primary determinant of whether a baby will develop male or female external genitalia?

Which units ate used to measure both velocity and speed? check all that apply

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.

This is a biological reaction due to a stimulus. i need this quickly !