MCQOPTIONS
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MCQOPTIONS
This section includes 25 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 ATPs are formed during complete oxidation of palmitate? |
| A. | 35 |
| B. | 96 |
| C. | 129 |
| D. | 131 |
| Answer» D. 131 | |
| 2. |
Atherosclerosis can cause blood |
| A. | thinning |
| B. | clotting |
| C. | thickening |
| D. | none of these |
| Answer» C. thickening | |
| 3. |
Palmitate has 16 carbon atoms with |
| A. | 2 double bonds |
| B. | 3 double bonds |
| C. | One double bond |
| D. | None of these |
| Answer» E. | |
| 4. |
The lowest energy value lipid for human nutrition is |
| A. | olive oil |
| B. | olestra |
| C. | margarine |
| D. | cardiolipih |
| Answer» C. margarine | |
| 5. |
Which of the following is called milk ejection hormone? |
| A. | Prolactin |
| B. | Vasopressin |
| C. | Oxytocin |
| D. | All of these |
| Answer» D. All of these | |
| 6. |
Cholesterolemia means |
| A. | lack of functional LDL receptors |
| B. | lack of functional HDL receptor |
| C. | high sensitivity to fatty food intake |
| D. | none of the above |
| Answer» B. lack of functional HDL receptor | |
| 7. |
Chylomicrons are synthesized in |
| A. | blood |
| B. | liver |
| C. | intestine |
| D. | pancreas |
| Answer» D. pancreas | |
| 8. |
How many types of lipoproteins are there? |
| A. | 2 |
| B. | 6 |
| C. | 8 |
| D. | 5 |
| Answer» E. | |
| 9. |
Fatty acids break down of eukaryotes occurs in |
| A. | mitochondrial matrix |
| B. | cell membrane |
| C. | cytosol |
| D. | endoplasmic reticulum |
| Answer» B. cell membrane | |
| 10. |
VLDLs are synthesized in |
| A. | blood |
| B. | liver |
| C. | intestine |
| D. | pancreas |
| Answer» C. intestine | |
| 11. |
Animals cannot convert fatty acids into glucose because |
| A. | acetyl CoA can not be converted to pyruvate |
| B. | absence of malate synthase |
| C. | absence of dehydrogenase |
| D. | absence of a-ketoglutarate dehydrogenase |
| Answer» B. absence of malate synthase | |
| 12. |
What is the major protein constituent of high-density lipoprotein (HDL)? |
| A. | Apolipoprotein A-l |
| B. | Apolipoprotein C-l |
| C. | Apolipoprotein E |
| D. | None of these |
| Answer» B. Apolipoprotein C-l | |
| 13. |
In eukaryotes fatty acid breakdown occurs in |
| A. | mitochondrial matrix |
| B. | cytosol |
| C. | cell membrane |
| D. | endoplasmic reticulum |
| Answer» B. cytosol | |
| 14. |
Phospholipid contains |
| A. | hydrophilic heads and hydrophobic tails |
| B. | long water-soluble carbon chains |
| C. | positively charged functional groups |
| D. | both (b) and (c) |
| Answer» B. long water-soluble carbon chains | |
| 15. |
Micelles of fatty acids in water are organized such that the __________ faces the solvent and the __________ are directed toward the interior |
| A. | carboxylic acid groups, hydrocarbon chains heads |
| B. | hydrophilic heads, hydrophobic tails |
| C. | hydrocarbon chains, carboxylic acid groups |
| D. | both (a) and (b) |
| Answer» E. | |
| 16. |
Arachidonate has 20 carbon atoms with |
| A. | 3 double bonds |
| B. | 2 double bonds |
| C. | 4 double bonds |
| D. | 8 double bonds |
| Answer» D. 8 double bonds | |
| 17. |
In the intestine, the dietary fats are hydrolysed by |
| A. | triacylglycerol lipase |
| B. | adenylate cyclase |
| C. | pancreatic lipase |
| D. | protein kinase |
| Answer» D. protein kinase | |
| 18. |
HDLs are synthesized in |
| A. | blood |
| B. | liver |
| C. | intestine |
| D. | pancreas |
| Answer» C. intestine | |
| 19. |
Triacylglycerols are |
| A. | soluble in water |
| B. | insoluble in water |
| C. | soluble in water at elevated temperature |
| D. | partially soluble in water |
| Answer» C. soluble in water at elevated temperature | |
| 20. |
How many classes of steroid hormones are there? |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 21. |
Synthesis of fatty acid takes place when |
| A. | fatty acid are plentiful |
| B. | carbohydrate is plentiful |
| C. | carbohydrate and energy are plentiful |
| D. | none of these |
| Answer» D. none of these | |
| 22. |
Fatty acid synthesis takes place in |
| A. | mitochondria |
| B. | cell membrane |
| C. | cytosol |
| D. | endoplasmic reticulum |
| Answer» D. endoplasmic reticulum | |
| 23. |
Cholestrol is the precursor of |
| A. | steroid hormones |
| B. | vitamin A |
| C. | bile salts |
| D. | both (a) and (c) |
| Answer» E. | |
| 24. |
The key enzyme in the regulation of fatty acid synthesis is |
| A. | acetyl CoA carboxylase |
| B. | AMP activated proteinkinase |
| C. | protein phosphatase |
| D. | none of these |
| Answer» B. AMP activated proteinkinase | |
| 25. |
The number of water molecules consumed by the formation of phosphatidyl serine are |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 4 |
| Answer» B. 1 | |