MCQOPTIONS
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MCQOPTIONS
This section includes 436 Mcqs, each offering curated multiple-choice questions to sharpen your Medical Subjects knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following amino acid is involved in gluconeogenesis______________? |
| A. | Glycine |
| B. | Valine |
| C. | Cysteline |
| D. | All of the above |
| Answer» E. | |
| 52. |
Which of the following about biological membrane is true ? |
| A. | Lipid moiety is amphipathic |
| B. | Rigid assembly of protein, lipid and carbohydrate |
| C. | Symmertrical bi leaflet structures |
| D. | Lipid and protein moiety are held by covalent interactions |
| Answer» B. Rigid assembly of protein, lipid and carbohydrate | |
| 53. |
Which metabolite of TCA cycle is used in detoxification of ammonia in brain_____________? |
| A. | Alpha ketoglutarate |
| B. | Ornithine |
| C. | Oxalocetate |
| D. | Glycine |
| Answer» B. Ornithine | |
| 54. |
Which is the poorest source of calcium among the following______________? |
| A. | Rice |
| B. | Human milk |
| C. | Egg yolk |
| D. | Cow’s milk |
| Answer» B. Human milk | |
| 55. |
Which is the by product of the urea cycle_______________? |
| A. | Aspartate |
| B. | Succinate |
| C. | Ornithine |
| D. | Fumarate |
| Answer» E. | |
| 56. |
Which is not seen in HMG CoA pathway ? |
| A. | Pyruvate |
| B. | Cholesterol |
| C. | Mevalonate |
| D. | Acetyl CoA |
| Answer» B. Cholesterol | |
| 57. |
Which is not a oligosaccharide sugar ? |
| A. | Galactose |
| B. | Lactose |
| C. | Maltose |
| D. | Sucrose |
| Answer» B. Lactose | |
| 58. |
Which cell organelle contains DNA_____________? |
| A. | Mitochondrion |
| B. | Golgi body |
| C. | Endoplasmic reticulum |
| D. | Centriole |
| Answer» B. Golgi body | |
| 59. |
Which base is not found in DNA________________? |
| A. | Adenine |
| B. | Guanine |
| C. | Cytosine |
| D. | Uracil |
| Answer» E. | |
| 60. |
Which acid is formed in the citric acid cycle ? |
| A. | Oxaloacetic acid |
| B. | Glutamic acid |
| C. | Nitric acid |
| D. | None of the above |
| Answer» B. Glutamic acid | |
| 61. |
When the prosthetic group of an enzyme is an inorganic ion, it is called a_____________? |
| A. | Cofactor |
| B. | Coenzyme |
| C. | Apoenzyme |
| D. | Holoenzyme |
| Answer» B. Coenzyme | |
| 62. |
What high energy phosphate compound is formed in the citric acid cycle through substrate level phosphorylation______________? |
| A. | ATP |
| B. | TTP |
| C. | ITP |
| D. | GTP |
| Answer» E. | |
| 63. |
Vitamin K____________? |
| A. | Helps in formation of prothrombin |
| B. | Inhibition of antithrombin |
| C. | Prevention of capillary fragility |
| D. | Stimulation of hematopoiesis in red bone marrow |
| Answer» B. Inhibition of antithrombin | |
| 64. |
Vitamin K dependent clotting factors are______________? |
| A. | II |
| B. | VII |
| C. | IX |
| D. | X |
| E. | All of the above |
| Answer» F. | |
| 65. |
Vitamin C effects_________________? |
| A. | Maturation of procollagen |
| B. | Formation of osteoid matrix |
| C. | Calcification of osteoid |
| D. | Both A and B |
| Answer» E. | |
| 66. |
Vitamin K antagonizes_____________? |
| A. | Corticosteroids |
| B. | Thrombin formation |
| C. | Bishydroxy coumarin |
| D. | Production of clotting factors by liver |
| Answer» D. Production of clotting factors by liver | |
| 67. |
Vitamin D_____________? |
| A. | Absorption requires bile pigments |
| B. | Synthesis is regulated at the reaction catalyzed by 15-hydroxylase |
| C. | Deficiency on adults leads to rickets |
| D. | Along with PTH, increases calcium resorption from bone |
| Answer» E. | |
| 68. |
Vitamin C is present in largest amount in the body in____________? |
| A. | Eye |
| B. | Kidneys |
| C. | Testes |
| D. | Adrenal cortex |
| Answer» E. | |
| 69. |
Vitamin B12 acts as a coenzyme to which one of the following enzyme ? |
| A. | Isocitrate dehydrogenase |
| B. | Homocyteine methyl transferase |
| C. | Glycogen synthase |
| D. | G-6-P dehydrogenase |
| Answer» C. Glycogen synthase | |
| 70. |
Vitamin B12 is_______________? |
| A. | Extrinsic factor of castle |
| B. | Intrinsic factor of castle |
| C. | Cyano cobalamine |
| D. | A fat soluble vitamin |
| Answer» B. Intrinsic factor of castle | |
| 71. |
Vitamin associated with one carbon transfer is__________? |
| A. | Niacin |
| B. | Thiamine |
| C. | Ascorbic acid |
| D. | Folic acid |
| Answer» E. | |
| 72. |
Vitamin A_____________? |
| A. | Is water soluble |
| B. | Deficiency causes impaired vision |
| C. | Maintains normal plasma calcium levels |
| D. | Is required for formation of clotting factors |
| Answer» C. Maintains normal plasma calcium levels | |
| 73. |
Vitamin also acting as hormones________________? |
| A. | Vitamin D |
| B. | Vitamin A |
| C. | Vitamin B1 |
| D. | Vitamin C |
| Answer» B. Vitamin A | |
| 74. |
Vit-K deficiency is indicated by___________? |
| A. | Low platelet count |
| B. | Increased prothrombin time |
| C. | Decreased prothrombin time |
| D. | None of the above |
| Answer» C. Decreased prothrombin time | |
| 75. |
Vit B12 is absorbed in the_____________? |
| A. | Stomach |
| B. | Terminal ileum |
| C. | Lower jejunum |
| D. | Proximal ileum |
| Answer» C. Lower jejunum | |
| 76. |
Urinary protein is detected by______________? |
| A. | Barfoed test |
| B. | Hay’s test |
| C. | Boiling test |
| D. | Ehrlich’s test |
| Answer» D. Ehrlich’s test | |
| 77. |
Urea is produced by the enzyme_____________? |
| A. | Urease |
| B. | Uricase |
| C. | Arginase |
| D. | Glutaminase |
| Answer» D. Glutaminase | |
| 78. |
Urea is formed in_____________? |
| A. | Brain |
| B. | Kidney |
| C. | Liver |
| D. | Intestine |
| Answer» D. Intestine | |
| 79. |
Unwinding of DNA is done by____________? |
| A. | DNAse |
| B. | Topo isomerase |
| C. | Ligase |
| D. | Reverse transcriptase |
| Answer» C. Ligase | |
| 80. |
Unsaturated fatty acids are converted to______________? |
| A. | Prostaglandins |
| B. | Cholesterol |
| C. | Cell membrane lipid |
| D. | Saturated fatty acid |
| Answer» B. Cholesterol | |
| 81. |
Under metabolic conditions associated with a high rate of fatty acid oxidation liver produces________________? |
| A. | Glutamate |
| B. | Acetoacetate |
| C. | Cholesterol |
| D. | Glycine |
| Answer» C. Cholesterol | |
| 82. |
Ubiqultin is involved in_____________? |
| A. | Intracellular proteolysis |
| B. | Electron transport chain |
| C. | Transport of ATP |
| D. | Protein folding |
| Answer» B. Electron transport chain | |
| 83. |
Type II glycogen storage disorder is due to deficiency of______________? |
| A. | Alpha -Glucosidase |
| B. | Alpha galactosidase |
| C. | Muscle phosphorylase |
| D. | Acid Lipase |
| Answer» B. Alpha galactosidase | |
| 84. |
Two Vitamin whose derivatives are involved in transformation of serine to glycine are_____________? |
| A. | B6 ad B12 |
| B. | B12 and nicotinamie |
| C. | Folic acid and B6 |
| D. | Folic acid and B12 |
| Answer» D. Folic acid and B12 | |
| 85. |
Tryptophan load test helps in the evaluation of deficiency of the vitamin______________? |
| A. | Folic acid |
| B. | Niacinamide |
| C. | Pyridoxine |
| D. | Cyano cobolamine |
| Answer» D. Cyano cobolamine | |
| 86. |
True about prostaglandins is______________? |
| A. | Short acting |
| B. | Present in many tissues |
| C. | Some require C-AMP for their action |
| D. | All are true |
| Answer» E. | |
| 87. |
True about G protein couple receptors is _________________ ? |
| A. | G proteins bind to hormones on the cell surface |
| B. | All the three subunits alpha, beta and gamma should bind each other for G protein to act |
| C. | G Proteins act as inhibitory and excitatory because of difference in alpha subunit |
| D. | G protein is bound to GTP in resting state |
| Answer» D. G protein is bound to GTP in resting state | |
| 88. |
True about denaturation of protein is all except______________? |
| A. | Unfolding occurs |
| B. | Disruption of secondary structure occurs |
| C. | Sequence of amino acids remain the same |
| D. | Biological activity is retained |
| Answer» E. | |
| 89. |
Triglyceride synthesis synthesis is increased by______________? |
| A. | Growth hormone |
| B. | Insulin |
| C. | Cortisol |
| D. | Gulcagon |
| Answer» C. Cortisol | |
| 90. |
Triglycerides in serum are transported by_______________? |
| A. | HDL |
| B. | VLDL |
| C. | LDL |
| D. | Chylomicrons |
| Answer» D. Chylomicrons | |
| 91. |
Transport form of iron is______________? |
| A. | Transferrin |
| B. | Ferritin |
| C. | Apoferritin |
| D. | Lactoferrin |
| Answer» B. Ferritin | |
| 92. |
Translation occurs at______________? |
| A. | Mitochondria |
| B. | Centrosome |
| C. | Nucleus |
| D. | Ribosome |
| Answer» E. | |
| 93. |
Transcription is the synthesis of____________? |
| A. | Single stranded complimentary copy of DNA |
| B. | Double stranded complimentary copy of DNA |
| C. | Complimentary copy of RNA |
| D. | COmplimentary copy of rRNA |
| Answer» B. Double stranded complimentary copy of DNA | |
| 94. |
Tocopherol is associated with____________? |
| A. | Vitamin A |
| B. | Vitamin E |
| C. | Vitamin K |
| D. | Vitamin D |
| Answer» C. Vitamin K | |
| 95. |
To keep blood PH at 7.4 the HCO3 : H2CO3 ratio should be_____________? |
| A. | 20 : 1 |
| B. | 30 : 1 |
| C. | 15 : 1 |
| D. | 1 : 1 |
| Answer» B. 30 : 1 | |
| 96. |
Thyroxine and catecholamines are derived from_____________? |
| A. | Tyrosine |
| B. | Tryptophan |
| C. | Alanine |
| D. | Leucine |
| Answer» B. Tryptophan | |
| 97. |
Thiamine deficiency causes decreased energy production because____________? |
| A. | It is required for the process of transmination |
| B. | It is co-factor in oxidative reduction |
| C. | It is co-enzyme for transketolase in pentose phosphate pathway |
| D. | It is co-enzyme for pyruvate dehydrogenase |
| Answer» E. | |
| 98. |
Thiamine deficiency can be diagnosed by measuring________________? |
| A. | Thiamine levels in blood |
| B. | Alkaline phosphatase levels in blood |
| C. | Transketolase activity in RBC |
| D. | Plasma pyruvate and lactic acid levels |
| Answer» D. Plasma pyruvate and lactic acid levels | |
| 99. |
The vitamin that facilitates iron absorption____________? |
| A. | Folic acid |
| B. | Ascorbic acid |
| C. | Biotin |
| D. | Para amino benzoic acid |
| Answer» C. Biotin | |
| 100. |
The vitamin K dependent proteins C and S are characterized by their ability to inactivate factor_____________? |
| A. | VIII a and V a |
| B. | VIII a |
| C. | V a |
| D. | None of the above |
| Answer» B. VIII a | |