Final answer:
The movement of oxygen and carbon dioxide between body cells and the blood in capillaries occurs through a process called diffusion.
The answer is option ⇒A
Step-by-step explanation:
Diffusion is the movement of particles (in this case, oxygen and carbon dioxide) from an area of higher concentration to an area of lower concentration. In the context of this question, oxygen moves from the capillaries to the body cells, where its concentration is lower, while carbon dioxide moves from the body cells to the capillaries, where its concentration is lower. This movement happens naturally to achieve equilibrium.
During respiration, oxygen is taken in by the lungs and transported through the bloodstream to body cells, where it is needed for cellular respiration. In cellular respiration, oxygen is used to generate energy, and as a byproduct, carbon dioxide is produced. The carbon dioxide then diffuses from the body cells into the capillaries and is carried back to the lungs, where it is exhaled.
The answer is option ⇒A
Your question is incomplete, but most probably the full question was:
The arrows in the diagram show the movement of oxygen and carbon dioxide between body cells and the blood in capillaries.
key:
oxygen
carbon dioxide
By which process does this movement occur?
- A diffusion
- B excretion
- C osmosis
- D respiration