Answer:
The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes.
The concave disc shape of red blood cells Maximizes the surface area of the cell , allowing for rapid movement of oxygen or carbon dioxide to and form the hemoglobin within the cell.
C) the lungs.
The air moves down the trachea and into the lungs where it is picked up by the blood
Answer: C. A substrate
Explanation:
A substrate is a substance on which an enzyme act. The enzyme acts on substrate X and converts it to Y.
The living things SPONCH stands for is <span>sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen.</span>
