Question

pancreatic cells that manufacture digestive enzymes contain an extensive; rough er; plasmalemma; cytoskeleton; smooth er; (number of) mitochondria; i dont know yet

Explanation:

Digestive enzymes are proteins. Rough ER has ribosomes for protein synthesis. Pancreatic cells making digestive enzymes need extensive rough ER for protein production. Other options: plasmalemma (cell membrane, not for enzyme synthesis), cytoskeleton (structure, not synthesis), smooth ER (lipids, detox), mitochondria (energy, not synthesis).

Answer:

A. rough ER