1.what are the major types of macromolecules? what are their components and jobs in the cell? 2.why are enzymes so special? 3. what does the cell membrane do? how do materials cross it? 4. make flow chart of the types of cells. how can you tell the types of cells apart? 5. what is the end goal of photosynthesis? how does this happen? what are the steps? 6. what is the end goal of cellular respiration? how does this happen? what are the steps? 7. how do cells get energy when there is not enough oxygen in the atmosphere?