MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Products formed from alcohol and not intermediates of TCA cycle/glycolysis - |
| A. | Lactate |
| B. | Oxalate |
| C. | Acetaldehyde |
| D. | Pyruvate |
| Answer» D. Pyruvate | |
| 2. |
Increased ratio of insulin/glucagon causes - |
| A. | Decreased amino acid synthesis |
| B. | Decreased level of lipoprotein |
| C. | Decreased ratio of cy-amp/5 amp |
| D. | All of the above |
| Answer» D. All of the above | |
| 3. |
Which of the following are intracellular events occurring in fibroblast during synthesis of collagen - |
| A. | Glycosylation of proline |
| B. | Hydrolysis procollagen to collagen |
| C. | Formation of covalent cross link b/w fibrils |
| D. | Formation of triple helix |
| Answer» E. | |
| 4. |
All will predispose to atherosclerosis except - |
| A. | Lipoprotein A |
| B. | Calcium |
| C. | Homocystinemia |
| D. | Fibrinogen |
| Answer» C. Homocystinemia | |
| 5. |
Synthesis of an immunoglobulin in membrane bound to secretory form is determined by |
| A. | Class switching |
| B. | One turn to two turn joining rule |
| C. | Allelic Exclusion |
| D. | Differential RNA Processing |
| Answer» E. | |
| 6. |
The property of proteins to absorb ultraviolet rays of light is due to: |
| A. | Peptide band |
| B. | Imino group |
| C. | Di Sulphide bond |
| D. | Aromatic amino acid |
| Answer» E. | |
| 7. |
About glycolysis true is - |
| A. | Complete breakdown of glucose |
| B. | Occurs in mitochondria |
| C. | 3ATPs are used in anaerobic pathway |
| D. | Conversion of glucose to 3C units |
| Answer» E. | |
| 8. |
All are involved in fast axonal transport, except - |
| A. | Lysosomes |
| B. | Neurofilaments |
| C. | Kinesin |
| D. | Dynein |
| Answer» C. Kinesin | |
| 9. |
Which of the following is a component of the visual pigment rhodopsin - |
| A. | b-Carotene |
| B. | Retinal |
| C. | Retinol |
| D. | Retinoic acid |
| Answer» C. Retinol | |
| 10. |
The amino acid Cysteine id formed from - |
| A. | Tryptophan |
| B. | Methionine |
| C. | Valine |
| D. | Proline |
| Answer» C. Valine | |
| 11. |
True about Km - |
| A. | Substrate concentration at which reaction rate is half the maximum |
| B. | Half the Substrate concentration at which the velocity is maximum |
| C. | Dissication constant of enzyme-product complex |
| D. | Dissociation constant of enzyme-substrate complex |
| Answer» B. Half the Substrate concentration at which the velocity is maximum | |
| 12. |
A 12 year old child presents with mental retardation and history of self mutilation.Which of the following tests will help in determing the diagnosis |
| A. | Serum Lactate Dehydrogenase Levels |
| B. | Serum Uric Acid Levels |
| C. | Serum Lead Levels |
| D. | Serum Alkaline Phosphatase Levels |
| Answer» C. Serum Lead Levels | |
| 13. |
Thiamine deficiency causes decreased energy production because - |
| A. | It is co-factor in oxydative reduction |
| B. | It is required for the frocess of transmination |
| C. | It is a co-enzyme for transketolase in pentose phosphate pathway |
| D. | It is a co-enzyme for pyruvate dehydrogenase |
| Answer» E. | |
| 14. |
Angiotensinogen is produced by |
| A. | Liver |
| B. | Kidney |
| C. | Hypothalamus |
| D. | Atrium |
| Answer» B. Kidney | |
| 15. |
Rapid method of chromosome identification in intersex is - |
| A. | SSCP |
| B. | Karyotyping |
| C. | FISH |
| D. | PCR |
| Answer» D. PCR | |
| 16. |
When component transfers four protons - |
| A. | Isocitrate Dehydrogenase |
| B. | Succinate Q Reductase |
| C. | NADH-Q Oxidoreductase |
| D. | Cytochrome -C oxidase |
| Answer» D. Cytochrome -C oxidase | |
| 17. |
Hormone sensitive lipase does not remove which carbon from Tri Acyl Glycerol ? |
| A. | 1st |
| B. | 2nd |
| C. | 3rd |
| D. | Removes all |
| Answer» C. 3rd | |
| 18. |
Proper functioning of Kreb cycle does not occur with deficiency of - |
| A. | Thiamane |
| B. | Vitamin A |
| C. | Vitamin K |
| D. | All of the above |
| Answer» B. Vitamin A | |
| 19. |
The anticodon region is an important part of the - |
| A. | r-RNA |
| B. | hn-RNA |
| C. | t-RNA |
| D. | m-RNA |
| Answer» D. m-RNA | |
| 20. |
Cholesterol present in LDL: |
| A. | Represents primarily cholesterol that is being removed from peripheral cells |
| B. | Binds to a receptor and diffuses across the cell membrance |
| C. | On accumulation in the cell inhibits replenishment of LDL receptors |
| D. | When enters a cell,suppresses activity of acyl-CoA:cholesterol acytranferase ACAT |
| Answer» D. When enters a cell,suppresses activity of acyl-CoA:cholesterol acytranferase ACAT | |
| 21. |
Which of the following statements about Recommended Dietary Allowances (RDA) is true ? |
| A. | RDA is defined as being equal to Adequate Intake (AI) |
| B. | RDA is defined as the recommended minimum requirement |
| C. | RDA is statistically defined as two standard deviations (SD) above Estimated Average Requirement (EAR) |
| D. | RDA is defined as being equal to the Estimated Average Requirement (EAR) |
| Answer» D. RDA is defined as being equal to the Estimated Average Requirement (EAR) | |
| 22. |
How many ATP's are formed in case of stearic acid by Bita-oxidation- |
| A. | 56 |
| B. | 147 |
| C. | 7 |
| D. | 18 |
| Answer» C. 7 | |
| 23. |
Which of the following enzymes is stable at acidic pH: |
| A. | Pepsin |
| B. | Trypsin |
| C. | Chymotrypsin |
| D. | Carboxypeptidase |
| Answer» B. Trypsin | |
| 24. |
In leucine zipper model, Leucine residue seen after every - |
| A. | 9 amino acids |
| B. | 7 amino acids |
| C. | 3 amino acids |
| D. | 6 amino acids |
| Answer» C. 3 amino acids | |
| 25. |
The linkage between aldehyde group of glucose and its hydroxyl group of 5th carbon atom is - |
| A. | Hemiacetal linkage |
| B. | Hemiketal linkage |
| C. | Glycosidic linkage |
| D. | Ester linkage |
| Answer» B. Hemiketal linkage | |
| 26. |
Gene therapy methods of - |
| A. | Electroporation |
| B. | Intranuclear injection |
| C. | Site directed mutagenesis |
| D. | All of the above |
| Answer» E. | |
| 27. |
Basic amino acids are: |
| A. | Aspartate and glutamate |
| B. | Serine and glycine |
| C. | Lysine and arginie |
| D. | None of the above |
| Answer» D. None of the above | |
| 28. |
Gene duplication plays an important role in the evolution of- |
| A. | t RNA |
| B. | hn RNA |
| C. | m RNA |
| D. | r RNA |
| Answer» D. r RNA | |
| 29. |
Transmination reaction is - |
| A. | Alpha-ketoglutrate is NH2 donor |
| B. | Net deamination with splitting of NH3 |
| C. | Non reversible pingpong reaction |
| D. | Glutamate is formed |
| Answer» E. | |
| 30. |
Gluconeogenesis occurs in all except |
| A. | Glycerol |
| B. | Amino acid |
| C. | Lactic acid |
| D. | Palmitate |
| Answer» E. | |
| 31. |
Competitive inhibitor of an enzyme alters its |
| A. | KM |
| B. | Vmax |
| C. | Specificity |
| D. | Product |
| Answer» B. Vmax | |
| 32. |
All of the following statements are correct about metabolism in brain except: |
| A. | Ketone bodies are used in starvation |
| B. | Has no stored energy |
| C. | Fatty acids are utilised in starvation |
| D. | 60% of total energy is utilized during resting stage |
| Answer» D. 60% of total energy is utilized during resting stage | |
| 33. |
A genetic disorder renders fructose 1,6-biphosphatase in liver less sensitive to regulation by fructose 2,6-biphosphate.All of the following metabolic changes are observed in this disorder except: |
| A. | Less pyruvate is formed |
| B. | Less ATP is generated |
| C. | Level of fructose 1,6-biphosphate is higher than normal |
| D. | Level of fructose 1,6-biphosphate is lower than normal |
| Answer» D. Level of fructose 1,6-biphosphate is lower than normal | |
| 34. |
Xeroderma pigmentosum is produced as a result of a defect in: |
| A. | DNA polymerase I |
| B. | DNA polymerase III |
| C. | DNA ligase |
| D. | DNA exonuclease |
| Answer» B. DNA polymerase III | |
| 35. |
Pyridoxine doesn't help in |
| A. | Threonine aldolase |
| B. | Deamination |
| C. | Carboxyl kinase |
| D. | Decarboxylation |
| Answer» D. Decarboxylation | |
| 36. |
Mucopolysaccharide hyaluronic acid is present in - |
| A. | Blood vessels |
| B. | Lens |
| C. | Vitreous humour |
| D. | Cornea |
| Answer» D. Cornea | |
| 37. |
The enzyme deficient is Lesch-Nyhan syndrome is - |
| A. | Transcarboxylase |
| B. | HGPRT |
| C. | GTRT |
| D. | Glutaminase |
| Answer» C. GTRT | |
| 38. |
Niacin is produced from: |
| A. | Threonine |
| B. | Tyrosine |
| C. | Tryptophan |
| D. | Alanine |
| Answer» D. Alanine | |
| 39. |
Peptidyl transferase is an example - |
| A. | Enzyme |
| B. | Catalyst |
| C. | Elongation factor |
| D. | Ribozyme |
| Answer» E. | |
| 40. |
Agranular cytoplasmic reticulum is involved in the synthesis of - |
| A. | Lipid |
| B. | Protein |
| C. | Carbohydrate |
| D. | Vitamin |
| Answer» B. Protein | |
| 41. |
Which amino acid migrates fastest on paper chromatography on methylcellulose medium? |
| A. | Valine |
| B. | Aspartic acid |
| C. | Glycine |
| D. | Lysine |
| Answer» B. Aspartic acid | |
| 42. |
A marker of Golgi apparatus is |
| A. | Galactosyl transferase |
| B. | Acetyl CoA synthetase |
| C. | Pyruvate kinase |
| D. | Malonyl CoA |
| Answer» B. Acetyl CoA synthetase | |
| 43. |
Which of the following amino acid is active at neutral pH - |
| A. | Histidine |
| B. | Glycine |
| C. | Arginine |
| D. | Aspartic acid |
| Answer» B. Glycine | |
| 44. |
Carriers of Salmonella typhi can be detected by - |
| A. | Widal test |
| B. | Blood culture |
| C. | Sputum culture |
| D. | Culture of feces |
| Answer» E. | |
| 45. |
Which vitamin is essential for metabolism of sulphur containing amino acids ? |
| A. | Biotin |
| B. | Folic acid |
| C. | Vitamin C |
| D. | Thiamine |
| Answer» C. Vitamin C | |
| 46. |
Which of the following is considered the active form of calcium: |
| A. | Phosphate bound Calcium |
| B. | Protein bound Calcium |
| C. | Ionised Calcium |
| D. | Albumin bound Calcium |
| Answer» D. Albumin bound Calcium | |
| 47. |
Force not acting in an enzyme substrate complex: |
| A. | Covalent |
| B. | Electrostatic |
| C. | Hydrogen |
| D. | Van der waals |
| Answer» E. | |
| 48. |
Co-enzyme used in transmination - |
| A. | NAD |
| B. | Biotin |
| C. | Pyridoxal phosphate |
| D. | Riboflavin |
| Answer» D. Riboflavin | |
| 49. |
Triple helix is seen in - |
| A. | Collagen |
| B. | DNA |
| C. | Elastin |
| D. | RNA |
| Answer» B. DNA | |
| 50. |
RFLP, true is/are - |
| A. | Detects mutation |
| B. | Recognizes triuncleotide repeates |
| C. | Detects deletion |
| D. | All of the above |
| Answer» E. | |