2) Yeasts and many bacteria are facultative anaerobes that is, they make ATP by

Question

2) Yeasts and many bacteria are facultative anaerobes that is, they make ATP by fermentation in the absence of oxygen, but if oxsygen is present, they can undergo aerobic respiration. Why would it be advantageous for them to be able to make ATP by aerobic respiration? Hint: Compare the amount of ATP produced in each process. 3) Why do you continue to breathe deeply after strenuous exercise? 4) When your roasting marshmallow catches fire, it burns well, glving ofa lot of heat Where does this energy come from? How is this related to cellular respiration?

Explanation / Answer

1.Aerobic respiration is far more energy-efficient than anaerobic respiration. Aerobicprocesses produce up to 38 ATP per glucose. Anaerobic processes yield only 2 ATP per glucose.

2.Your muscles are working harder during exercise and that means their demand for oxygen increases. This happens because oxygen is needed to burn calories more efficiently. Since the blood picks up oxygen in the lungs, and the demand for oxygen increases during exercise, the lungs must work harder. With a faster breathing rate, more oxygen is picked up at the lungs for delivery to the working muscles.

3.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.