Which process occurs only in autotrophs and never in heterotrophs? A. protein synthesis
B. food digestion
C. cellular respiration
D. photosynthesis

D

Explanation:

Most autotrophs make their "food" through photosynthesis using the energy of the sun. Heterotrophs cannot make their own food, so they must eat or absorb it.

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira

it is either c or d and i know for sure it is not a or b