The answer is B because:
Cell walls are made of cellulose and proteins (hence II).
Animal cells don't have cell walls (only cell membrane) but plant cells do so IV
They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.
I would say Probably a pharmacy, is she studied in Medicine that's what makes the most sense right?
(Sorry if I'm wrong hun!)
Cellular respiration is the answer. Because mitochondria is known as the "power house" of the cell and provides energy for the cell process.
Villi provides absorption of nutrients and it's important to have that in the small intestine. As the small intestine mostly collects of nutrients of digested food. They improve absorption by providing surface area and where nutrition can be collected
Ribosomes, because they produce protein for the cell.