7. A "steady state" or equilibrium that cells maintain internally is A. homeostasis
B. osmosis
C. diffusion
D. active transport

A

Explanation:

A cell is in homeostasis because every mechanism that keeps it alive is in "a steady state".

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