3. Which part of the mitochondrion does an electron transport chain occur?

A. Cristae B. Grana C. Matrix D. Outer membrane
2. How many ATP (Adenosine Triphosphate) molecules are produced in glycolysis if there is

one molecule of glucose?

A. 1 B. 2 C.3 D.4

3. Which of the following materials are formed during the Krebs Cycle?

I.CO2 II. FADH2 III. NADH IV. NADPH

A. I, II, III B. I, III, IV C. I, II, IV D. II. III, IV
4. One product of fermentation, bread, contains bubbles like the one in the picture to the right. Where do these bubbles come from?

A. Water C. Lactic acid B. Energy D. Carbon dioxide​