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. |
Maximum energy per gram on oxidation is yielded from ____________ |
| A. | Starch |
| B. | Fat |
| C. | Glycogen |
| D. | Protein |
| Answer» C. Glycogen | |
| 2. |
Long-chain fatty acids are oxidized step-wise in one carbon unit starting from ____________ |
| A. | Carboxyl end |
| B. | Aliphatic end |
| C. | Carboxyl and Aliphatic end |
| D. | None of the mentioned |
| Answer» B. Aliphatic end | |
| 3. |
Membrane potential and the proton gradient ____________ |
| A. | Cancel one another when uncouplers are present |
| B. | Reinforce one another when respiratory inhibitors are present |
| C. | Are sufficient, separately to make ATP from ADP + Pi |
| D. | Are required to make ATP |
| Answer» E. | |
| 4. |
Every cycle of -oxidation produces ____________ |
| A. | 1 FAD, 1 NAD<sup>+</sup> and 2 CO<sub>2</sub> molecules |
| B. | 1 FADH<sub>2</sub>, 1 NADH and 1 acetyl co-A |
| C. | 1 FADH<sub>2</sub>, 1 NAD<sup>+</sup> and 1 acetyl co-A |
| D. | 1 FAD, 1 NADH and 2 CO<sub>2</sub> molecules |
| Answer» C. 1 FADH<sub>2</sub>, 1 NAD<sup>+</sup> and 1 acetyl co-A | |
| 5. |
The acyl co-A formed in the cytosol is transported to ____________ |
| A. | Mitochondrial matrix |
| B. | Microsomes |
| C. | ER |
| D. | Remains in cytosol |
| Answer» B. Microsomes | |
| 6. |
Three identical subunits of the F1 complex during ATP synthesis have ____________ |
| A. | Different affinities for ATP and ADP |
| B. | Similar affinities for ADP and ATP |
| C. | Different affinities for ADP but not ATP |
| D. | Different affinities for ATP but not ADP |
| Answer» B. Similar affinities for ADP and ATP | |
| 7. |
The transport of acyl co-A for oxidation using a shuttle involves the formation of the intermediate ____________ |
| A. | Acyl coenzyme A |
| B. | 3 acetyl co-A |
| C. | Acyl cartinine |
| D. | None |
| Answer» D. None | |
| 8. |
The measure of potential energy stored as a combination of proton and voltage gradients across membrane is termed as ____________ |
| A. | Proton motive force |
| B. | Electron motive force |
| C. | Molecule motive force |
| D. | Ion motive force |
| Answer» B. Electron motive force | |
| 9. |
ATP synthesis by chemiosmosis is by ____________ |
| A. | ATP dehydrogenase |
| B. | Gyrase |
| C. | ATP synthase |
| D. | Dehydrogenase |
| Answer» D. Dehydrogenase | |
| 10. |
The proposal of the chemiosmotic hypothesis was by ____________ |
| A. | Peter D. Mitchell |
| B. | Charles Darwin |
| C. | Mendele |
| D. | Alfred Russell |
| Answer» B. Charles Darwin | |