The lac operon is a form of gene regulation. The lac operon in e. coli has genes that transport lactose to the cytoplasm, then breaks it down with the help of enzymatic reactions to turn it into glucose. Once there's glucose, energy can be made.
Answer:
Ribosomes produce proteins compared to stomach from which our body get proteins. Mitochondria is like the small intestine it converts food into nutrient essential for the cell
Explanation:
Ribosomes is one of a cellular organelle its manufacture protein this protein is synthesize by rough ER.Our Stomach also generate protein which is required by our body. Mitochondria converts food into nutrient which is needed by a cell.
B I think is the correct answer
B. Keratin
Even our nails are made up of it
