Fill in each blank with the correct word from the lesson.

1. _______ respiration uses oxygen to completely break down glucose, producing large amounts of energy — thirty-eight ATP molecules per glucose.
2. _______ respiration does not use oxygen — it breaks glucose down incompletely, producing far less energy — only two ATP — along with lactic acid.
3. _______ can happen in two ways.
4. This emergency mode kicks in during intense exercise when _______ cannot be delivered fast enough.
5. When yeast breaks down sugar without oxygen, it produces ethanol — alcohol — and _______.

Choose the best option for each question.

1. What causes muscle cramps during intense exercise?
   a) Too much oxygenb) Lactic acid build-up from anaerobic respirationc) Dehydration onlyd) Carbon dioxide build-up
2. How much ATP does aerobic respiration produce from one glucose?
   a) 2 ATPb) 10 ATPc) 38 ATPd) 100 ATP
3. What do yeast produce during fermentation?
   a) Lactic acid and waterb) Carbon dioxide and alcoholc) Oxygen and glucosed) Starch and water

Write T for True or F for False in the brackets.

1. Lactic acid build-up from anaerobic respiration is one of the key concepts in the lesson on Aerobic and Anaerobic Respiration.
2. Too much oxygen is the main topic of this lesson.
3. 38 ATP is one of the key concepts in the lesson on Aerobic and Anaerobic Respiration.
4. 2 ATP is the main topic of this lesson.

1. In your own words, explain what Aerobic and Anaerobic Respiration means.
2. List two things you learned from this lesson on Aerobic and Anaerobic Respiration.