All the following will normally occur during the electron flow in ETS in mitochondria except:
1. NADH and are oxidized.
2. the pH of the matrix decreases.
3. the electrons lose free energy.
4. an electrochemical gradient is formed.
Fats and proteins can also provide us energy. For this to happen:
1. Fats and proteins must first be converted to glucose
2. Fats and proteins must enter separate catabolic pathways of their own
3. Fats and proteins must be modified to forms that can enter the glucose metabolic pathway
4. Fats must first be converted to proteins that can enter the glucose metabolic pathway
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Yeast cells are able to regenerate regenerated from NADH during the :
1. reduction of acetaldehyde to ethyl alcohol
2. oxidation of pyruvate to acetyl CoA
3. reduction of pyruvate to form lactate
4. oxidation of NAD+ in the citric acid cycle
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In the glycolytic pathway, ATP formation:
1. does not occur
2. requires presence of oxygen
3. needs a proton gradient across a membrane
4. involves substrate-level phosphorylation
Direct use of oxygen is in:
1. | Glycolysis | 2. | Fermentation |
3. | Krebs cycle | 4. | Electron transport |
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In the ETS in mitochondria, identify the product that is not correctly matched with its number:
1. | NAD+ = 10 | 2. | FAD = 2 |
3. | ATP = 26 | 4. | H2O = 12 |
Maximum energy can be released during the oxidation of:
1. | proteins | 2. | glucose |
3. | fatty acids | 4. | nucleic acids |
The glycolytic pathway occurs in:
1. cytoplasm
2. chloroplasts
3. matrix of the mitochondrion
4. cristae of the mitochondrion
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In lactate fermentation, the final electron acceptor is:
1. | NAD+ | 2. | pyruvate |
3. | O2 | 4. | lactic acid |
Coenzyme A, formed in part from one of the B vitamins, functions to:
1. | Oxidize pyruvate | 2. | Reduce pyruvate |
3. | Activate the acetyl group | 4. | Facilitate electron flow |