Answer:
C.
Explanation:
Carbohydrates are broken down by stomach acid (hydrochloric acid)
Answer: It would be C, fertilization
Explanation: fertilization is the basis of variability, since the two main purposes of fertilization are the combination of genes derived from both parents and the generation of a new individual with a new genetic endowment.
Answer:
Carrier proteins are involved in facilitated diffusion and active transport of substances out of or into the cell (e.g. diffusion of sugars, amino acids and nucleosides, uptake of glucose, transportation of salts, glucose, amino acids, etc.).
Explanation:
In biology, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active site consists of residues that form temporary bonds with the substrate (binding site) and residues that catalyse a reaction of that substrate (catalytic site).