Temperature, pressure and composition.
I think The second step of cellular respiration is the Kreb's cycle and it occurs in mitochondrial matrix.
First step of cellular respiration is glycolysis and it occurs in the cytoplasm of a cell.
I am not really confident about my answer.
If I am wrong please correct me. <span />
Answer:
Organic molecules can include carbohydrates,proteins, and fat. organic molecules can have non-carbon atoms contained insteide them
Explanation:
gas exchange occurs in the human lungs.