13. Cuando la concentración de solutos dentro de la célula es igual a la concentración externa, se dice que la solución es
a. hipertónica
b. hipotónica
c. Isotónica
d. Contráctil

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

protein makes up the building blocks of organs, muscles, skin, hormones and pretty much everything that matters in your body.

some choices are:

peanut butter

seeds

eggs

yogurt

meats

fish

so pretty much meat, dairy, nuts, and grains.