Q. No.Krebs cycle is also called as:
1.
glycolysis
2.
fermentation
3.
Calvin cycle
4.
the citric acid cycle
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A five carbon amino acid can be formed by which of the following intermediates of Krebs cycle?
| 1. | succinate | 2. | malate |
| 3. | citrate | 4. | α-ketoglutarate |
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The components of the mitochondrial electron transport chain are located:
1. in mitochondrial matrix
2. in outer mitochondrial membrane
3. in inner mitochondrial membrane
4. in intermembrane space
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The correct sequence of flow of electrons downhill in the mitochondrial electron transport chain would be:
1. ubiquinone, cytochromes, FMN, Fe-S
2. cytochromes, FMN, ubiquinone, Fe-S
3. Fe-S, FMN, cytochromes, ubiquinone
4. FMN, Fe-S, ubiquinone, cytochromes
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Identify the incorrectly matched pair:
| Component of ETC | Name | |
| 1. | Complex I | NADH dehydrogenase |
| 2. | Complex II | Succinate dehydrogenase |
| 3. | Complex III | Cytochrome b6f complex |
| 4. | Complex IV | Cytochrome c oxidase |
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is produced in
| 1. | glycolysis | 2. | the oxidation of pyruvate |
| 3. | the Krebs cycle | 4. | the electron transport chain |
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In aerobic respiration, oxygen acts as:
I. Terminal electron acceptor
II. Terminal proton acceptor
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
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Consider the steps of glycolysis given in the diagram:
Regarding reaction 3 in the diagram:
| I: | The reaction is a key regulatory point and is also the rate-limiting step. |
| II: | The reaction is freely reversible. |
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false
What process in aerobic respiration generates maximum ATP?
| 1. | substrate-level phosphorylation | 2. | chemiosmosis |
| 3. | Krebs cycle | 4. | Pyruvate decarboxylation |
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The stage of cellular respiration that directly involves oxygen is:
| 1. | glycolysis |
| 2. | at the end of ETC |
| 3. | Krebs cycle |
| 4. | the phosphorylation of ADP to form ATP |
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