Antigens are found on the surface of viruses
It would be B. micropipette because you can measure more precisely with this form of lab apparatus.
I think this is A but I'm not 100% sure (:
its asking for you to check the box if the item is preset in the cell hint: eukaryotic cells have a nucleus so you would say yes in the box. but since prokaryotic cells don't have a nucleus say no in the box
