MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many molecules of acetyl-CoA are produced in oxidation of palmitic acid (C), which involves seven rounds of oxidation? |
| A. | 6 |
| B. | 7 |
| C. | 8 |
| D. | 9 |
| Answer» D. 9 | |
| 2. |
The three identical b subunits of the , complex during ATP synthesis have |
| A. | different affinities for ATP but not for ADP |
| B. | different affinities for ADP but not for ATP |
| C. | different affinities for ATP and for ADP |
| D. | similar affinities for ADP and ATP |
| Answer» D. similar affinities for ADP and ATP | |
| 3. |
The maximum energy per gram on oxidization is yielded from |
| A. | fat |
| B. | protein |
| C. | glycogen |
| D. | starch |
| Answer» B. protein | |
| 4. |
The oxidation of methanol (wood alcohol) in human retina tissue indirectly leads to |
| A. | pressure builds up |
| B. | colour blindness |
| C. | blindness |
| D. | all of these |
| Answer» D. all of these | |
| 5. |
The three identical b subunits of the F1, complex during ATP synthesis have |
| A. | different affinities for ATP but not for ADP |
| B. | different affinities for ADP but not for ATP |
| C. | different affinities for ATP and for ADP |
| D. | similar affinities for ADP and ATP |
| Answer» D. similar affinities for ADP and ATP | |
| 6. |
The transport of acyl-CoA for oxidation using a shuttle involves formation of the intermediate |
| A. | 3 acetyl-CoA |
| B. | Acyl-coenzyme A |
| C. | acyl-carnitine |
| D. | None of these |
| Answer» D. None of these | |
| 7. |
How many molecules of acetyl-CoA are produced in oxidation of palmitic acid (C16), which involves seven rounds of oxidation? |
| A. | 6 |
| B. | 7 |
| C. | 8 |
| D. | 9 |
| Answer» D. 9 | |
| 8. |
The irreversibility of the thiokinase reactions (formation of initial acyl-CoA) |
| A. | make this activation reaction the committed step on the pathway |
| B. | is due to the subsequent hydrolysis of the product |
| C. | applies only to even-chain fatty acids |
| D. | both (a) and (b) |
| Answer» E. | |
| 9. |
The oxidation of methanol (wood alcohol) in human retina tissue leads directly to the formation of |
| A. | formaldehyde |
| B. | sugars |
| C. | CO |
| D. | <sub>2</sub> |
| E. | none of these |
| Answer» B. sugars | |
| 10. |
Where the acyl-CoA formed in the cytosol is transported for oxidation? |
| A. | Mitochondrial matrix |
| B. | Microsomes |
| C. | Endoplasmic reticulum |
| D. | Remains in cytosol |
| Answer» B. Microsomes | |
| 11. |
Long-chain fatty acids are oxidized step-wise in one carbon units starting from the |
| A. | carboxyl end |
| B. | aliphatic end |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» B. aliphatic end | |