Transgenic cells are used to make for treating cancer, heart disease, and many other diseases and disorders.
a. plasmids
b. polymerase
c. proteins
d. carbohydrates

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

the areas around the equator