Don’t know the answer to the first one but the last one should be histones
Explanation:
Deliver nutrients to the body cells.
The source of the infection most would be the first patient who contaminated the instrument used for endoscopic procedures since washing the instrument did not remove the bacteria so it does not come from the water, detergent or glutaraldehyde. Hope this helps. Have a nice day.
The answer is ribosomes. Ribosomes produce proteins for the cell.