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.
Answer:
1.lunar 2.solar 3.earth 4.the moon 5.sun
Answer:
Explanation:
Without the transformation of ATP to ADP our cells would not be able to produce any energy to function. also, all the mitochondria in the cells would die because this cycle is connected to the electron transport chain in which ions are converted.
), etc.