MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In mitochondria, hydride ions are removed from substrates by _________ |
| A. | NAD-linked dehydrogenases |
| B. | NADP-linked dehydrogenases |
| C. | ATP synthase |
| D. | Succinate dehydrogenases |
| Answer» B. NADP-linked dehydrogenases | |
| 2. |
Complex 4 is also called _________ |
| A. | NADH dehydrogenase |
| B. | Succinate dehydrogenase |
| C. | Cytochrome bc1 complex |
| D. | Cytochrome oxidase |
| Answer» E. | |
| 3. |
Complex 3 is also called _________ |
| A. | NADH dehydrogenase |
| B. | Succinate dehydrogenase |
| C. | Cytochrome bc1 complex |
| D. | Cytochrome oxidase |
| Answer» D. Cytochrome oxidase | |
| 4. |
Complex 2 is also called _________ |
| A. | NADH dehydrogenase |
| B. | Succinate dehydrogenase |
| C. | Cytochrome bc1 complex |
| D. | Cytochrome oxidase |
| Answer» C. Cytochrome bc1 complex | |
| 5. |
Complex 1 is also called _________ |
| A. | NADH dehydrogenase |
| B. | Succinate dehydrogenase |
| C. | Cytochrome bc1 complex |
| D. | Cytochrome oxidase |
| Answer» B. Succinate dehydrogenase | |
| 6. |
The first step in the oxidation of fatty acyl co-A is catalyzed by _________ |
| A. | Succinate dehydrogenase |
| B. | NADH dehydrogenase |
| C. | ATP synthase |
| D. | Acyl co-A dehydrogenase |
| Answer» E. | |
| 7. |
The only membrane bound enzyme in the citric acid cycle is _________ |
| A. | Succinate dehydrogenase |
| B. | NADH dehydrogenase |
| C. | ATP synthase |
| D. | Acyl co-A dehydrogenase |
| Answer» B. NADH dehydrogenase | |
| 8. |
A lipid-soluble benzoquinone with a long isoprenoid side chain is? |
| A. | Ubiquinone |
| B. | Cytochrome b |
| C. | Cytochrome c |
| D. | Cytochrome a |
| Answer» B. Cytochrome b | |
| 9. |
NADP-linked dehydrogenase catalyzes _________ |
| A. | Glucose 6-phosphate+NADP<sup>+</sup> 6-phosphogluconate + NADPH + H<sup>+</sup> |
| B. | Lactate + NAD<sup>+</sup> pyruvate + NADH + H<sup>+</sup> |
| C. | Pyruvate + CoA + NAD<sup>+</sup> acetyl-CoA + CO<sub>2</sub> + NADH + H<sup>+</sup> |
| D. | L-Malate + NAD<sup>+</sup> oxaloacetate + NADH + H<sup>+</sup> |
| Answer» B. Lactate + NAD<sup>+</sup> pyruvate + NADH + H<sup>+</sup> | |
| 10. |
Protein that contains a nucleic acid derivative of riboflavin is called _________ |
| A. | Nucleic acid |
| B. | Amino acid |
| C. | Flavoprotein |
| D. | None |
| Answer» D. None | |