I need help with cells.....see details?

These all sound like "Read the textbook" issues, but you can also do the following. Type "cells" into your search engine. You might need to specify "Plant" or "Animal" to refine your search. For the discovery, type in "Microscope", as that was the tool needed to "discover" them. For each of the terms, type it into a search-engine and sort the results and read. You're actually going to have to do the reading, I won't just give you the answers, that does you no favors at all. Unless you learn how to dig the answers out of available sources, you won't make it very far in your schooling.