Question

the folds on the inside of mitochondria are called what?
cristae
ribosomes
nucleous
reticular membrane

Explanation:

Mitochondria are organelles in cells. Their inner - membrane folds are called cristae, which increase the surface area for cellular respiration processes. Ribosomes are for protein synthesis, the nucleolus is in the nucleus, and the reticular membrane refers to endoplasmic reticulum membranes, none of which are the inner - folds of mitochondria.

Answer:

A. Cristae