<span>Pepsin is an enzyme that breaks down proteins. Produced in the stomach, pepsin becomes inactive at pH values of 6.5 or more, but it is not fully denatured until it is in an environment with a pH of 8.0. Bile in the small intestine increases the pH value of food from the stomach to make them alkaline, which denatures pepsin.</span>
D. a cell nucleus divides
Answer:
it stayed the same
Explanation:
Isotonic solution have an equal concentration of solute and solvent therefore there will be no net flow of water in either directions.
Mitochondrial and thylakoid membranes both use adenosine triphosphate or ATP synthase proteins in atp production.
Answer:
C. Carbon, nitrogen
Explanation:
Nucleic acids contain C, H, O, N, and P. Amino acids contain C, H, O, and N (no phosphorous).
