The correct answer among the choices provided is option A. Lung capillaries are responsible for exchanging carbon dioxide for oxygen from the air. Blood that comes from the heart gets oxygen from the alveoli. The carbon dioxide in the blood goes into the alveoli at the same time.
You see, passive transport needs no energy. So that being said, it moves from areas with high concentration to areas with low concentration.
Hope that helps!
Answer:
Cell X
Explanation:
Prokaryotes do not have a nucleus or any other membrane-bound organelles (including chloroplasts). So cell X is a prokaryote.
