Answer:
1: cell membrane
2. chloroplast
Explanation:
1. the cell membrane is the outer layer of an animal cell since they don't have cell walls
2. only plant cells have chloroplasts
(Assuming that this is about chromosomes)
A male has an XY combination in his chromosomes.
Carbon dioxide (CO²) is taken in to start the Calvin Cycle.
Our sleep cycle is a circadian rythm but without the options I can't give a definite answer