Answer:
Mitochondria convert chemical energy, in the form of a chemical called adenosine triphosphate or ATP for short. ATP is an energy currency that every cell in our body can use. ... Electrons are passed between the complexes of the electron transport chain and enable the cells to convert energy.
so it's 2nd (light to glucose)
Proteins is what comes in and out of the cell
Answer:
The advantage of small cell size is that substances like organic molecules and ions can diffuse easily into the cells whereas wastes can diffuse easily out of the cells.
