1. | Fermentation – B | A) | takes place in the mitochondrion. | B) | takes place in all animal cells. | C) | does not require O2. | D) | requires lactic acid. | E) | prevents glycolysis. |
2. | In the cell, the site of oxygen utilization is the - D | A) | nucleus. | B) | chloroplast. | C) | endoplasmic reticulum. | D) | mitochondrion. | E) | cytosol. |
3. | Animals inhale air containing oxygen and exhale air with less oxygen and more carbon dioxide. After inhalation, the oxygen missing from the air will mostly be found in - A | A) | the carbon dioxide that is exhaled. | B) | water. | C) | organic molecules. | D) | ethanol. | E) | lactate. |
4. | The first phase of photosynthesis, a series of reactions that requires the absorption of photons to form ATP and NADPH, is referred to as the __D_____ phase. | A) | Reduction | B) | dark reactions | C) | carbon fixation | D) | light reactions (or photophosphorylation) | E) | None of the above |
5. | Plants are green because – A | A) | chlorophylls absorb blue and orange-red wavelengths of light and reflect green light. | B) | chloroplasts transmit green light. | C) | energized chlorophyll a emits green light. | D) | plants do not possess green pigment. | E) | chlorophylls absorb green light. |
6. | The main function of photosynthesis is the – C | A) | consumption of CO2. | B) | production of ATP. | C) | conversion of light energy to chemical energy. | D) | production of starch. | E) | production of O2. |
7. | Most of the ATP made during the complete oxidation of glucose to CO2 and water is – B | A) | made by the mitochondrial ATP synthase. | B) | from substrate-level phosphorylation. | C) | synthesized by the sodium–potassium ATPase. | D) | synthesized in the cytosol. | E) | made directly by the citric acid cycle. |
8. | Oxidation and reduction – E | A) | entail the gain or loss of proteins. |