Assume the volume of air inhaled and exhaled is 500 ml. calculate the difference (in ml) between the amount of oxygen inhaled and the amount of oxygen exhaled

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Why would a drug the damages capsids treat a viral infection

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen