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.
| 101. |
The uptake of glucose by the liver increase following a carbohydrate meal because____________? |
| A. | There is increase in phosphorylation of glucose by glucokinase |
| B. | GLUT-2 stimulated by insulin |
| C. | Glucokinase has a low Km for glucose |
| D. | Hexokinase in liver has a high affinity for glucose |
| Answer» B. GLUT-2 stimulated by insulin | |
| 102. |
The transmembrane adhesive molecules present in hemi desmosomes which specifically binds to basal lamina glycoprotein laminin are______________? |
| A. | Integrin a6-B4 |
| B. | The catenins desmoplakin |
| C. | cadherins desmoglein |
| D. | a and B catenin |
| Answer» B. The catenins desmoplakin | |
| 103. |
The total blood concentration of ketone bodies in well fed individual is__________? |
| A. | 1 mg% |
| B. | 5 mg% |
| C. | 12 mg% |
| D. | 20 mg% |
| Answer» B. 5 mg% | |
| 104. |
The tissue with the highest glycogen content (mg/100gm)_____________? |
| A. | Liver |
| B. | Muscle |
| C. | Kidneys |
| D. | Testes |
| Answer» B. Muscle | |
| 105. |
The sugar component of cerebrosides is_____________? |
| A. | Fructose |
| B. | Sucrose |
| C. | Galactose |
| D. | None of the above |
| Answer» D. None of the above | |
| 106. |
The substance essential for transfter of fatty acids across mitochondrial membrance_____________? |
| A. | Creatine |
| B. | Creatinine |
| C. | Carnitine |
| D. | Coenzyme A |
| Answer» D. Coenzyme A | |
| 107. |
The sigma subunit of prokaryotic RNA polymerase_______________? |
| A. | Binds the antibiotic Rifampicin |
| B. | Is inhibited by a-amanitin |
| C. | Specifically recognizes the promoter site |
| D. | Is part of the core enzyme |
| Answer» D. Is part of the core enzyme | |
| 108. |
The reducing equivalent for fatty acid synthesis is derived form____________? |
| A. | Glycolysis |
| B. | Kreb’s cycle |
| C. | Urea cycle |
| D. | Pentose phosphate pathway |
| Answer» E. | |
| 109. |
The reducing end of glutathione, the amino acid is_________________? |
| A. | Glycine |
| B. | Leucine |
| C. | Lycie |
| D. | Valine |
| Answer» B. Leucine | |
| 110. |
The reaction inhibited in thiamine deficiency is_______________? |
| A. | Pyruvate to acetyl CoA |
| B. | Citrate to alpha ketoglutarate |
| C. | Succinyl CoA to fumarate |
| D. | None of the above |
| Answer» B. Citrate to alpha ketoglutarate | |
| 111. |
The rate of absorption of sugars by the small intestine is highest for_______________? |
| A. | Pentoses |
| B. | Disaccharides |
| C. | Polysaccharides |
| D. | Hexoses |
| Answer» E. | |
| 112. |
The protein rich in basic amino acids, which functions in the packaging of DNA is chromosomes is______________? |
| A. | Histone |
| B. | Collagen |
| C. | Hyaluronic acid binding protein |
| D. | Fibrinogen |
| Answer» B. Collagen | |
| 113. |
The product of oxidation of odd chainfatty acids is______________? |
| A. | Aceto acetyl CoA |
| B. | Malonyl CoA |
| C. | Propionyl CoA |
| D. | Fumaryl CoA |
| Answer» D. Fumaryl CoA | |
| 114. |
The process of transfer of information from the RNA to the proteins is called______________? |
| A. | Mutation |
| B. | Translation |
| C. | Transcription |
| D. | Conjugation |
| Answer» C. Transcription | |
| 115. |
The process by which a base sequence of messenger RNA is synthesized (by a RNA polymerase) on a template of complementary DNA is called______________? |
| A. | Transcription |
| B. | Transduction |
| C. | Translation |
| D. | Translocation |
| Answer» B. Transduction | |
| 116. |
The primary role of chaperones is to help in______________? |
| A. | Protein synthesis |
| B. | Protein degradation |
| C. | Protein denaturation |
| D. | Protein folding |
| Answer» E. | |
| 117. |
The precursor of steroid is_______________? |
| A. | Amino acids |
| B. | Fatty acids |
| C. | Cholesterol |
| D. | None of the above |
| Answer» D. None of the above | |
| 118. |
The precursor of testosterone is_____________? |
| A. | Aldosterone |
| B. | Methyl testosterone |
| C. | Estrogen |
| D. | Pregnenolone |
| Answer» E. | |
| 119. |
The precursor of cholesterol synthesis is________________? |
| A. | Acetic acid |
| B. | Acetyl CoA |
| C. | Oxalo acetic acid |
| D. | Pyruvate |
| Answer» C. Oxalo acetic acid | |
| 120. |
The portion of DNA in Which RNA polymerase binds and starts transcription is called______________? |
| A. | Terminator |
| B. | Anti terminator |
| C. | Operator |
| D. | Promoter region |
| Answer» E. | |
| 121. |
The patient suffered from hypogondism, failure to thrive, lose of taste and unable to maintain stability. This shows the deficiency of_____________? |
| A. | Zinc |
| B. | Chromium |
| C. | Copper |
| D. | Potassium |
| Answer» B. Chromium | |
| 122. |
The number of essential amino acid are______________? |
| A. | 6 |
| B. | 8 |
| C. | 12 |
| D. | 16 |
| Answer» C. 12 | |
| 123. |
The normal value of serum potassium level is____________? |
| A. | 2.8-3.8 meq/L |
| B. | 3.8-5 meq/L |
| C. | 5-5.8 meq/L |
| D. | 6-7.2 meq/L |
| Answer» C. 5-5.8 meq/L | |
| 124. |
The normal range of serum osmolality (in mosm/L) is_____________? |
| A. | 280 to 295 |
| B. | 300 to 320 |
| C. | 350 to 375 |
| D. | 200 to 250 |
| Answer» B. 300 to 320 | |
| 125. |
The normal level of serum cholesterol is_______________? |
| A. | 100-140 mgs/100 ml |
| B. | 260-360 mgs/100 ml |
| C. | 150-250 mgs/100 ml |
| D. | 80-250 mgs/100 ml |
| Answer» D. 80-250 mgs/100 ml | |
| 126. |
The nitrogen of the body is supplied by______________? |
| A. | Triacyl glycerol |
| B. | Proteins |
| C. | Glucose |
| D. | Lipids |
| Answer» C. Glucose | |
| 127. |
The nitrogen content in 50 gm of a typical dietary protein is most likely to be_____________? |
| A. | 5 gm |
| B. | 8 gm |
| C. | 10 gm |
| D. | 16 gm |
| Answer» C. 10 gm | |
| 128. |
The most important role of cholesterol is_____________? |
| A. | It is a component of cell membrane |
| B. | It is a precursor of polyunsaturated fatty acids |
| C. | It stores up energy |
| D. | None of the above |
| Answer» B. It is a precursor of polyunsaturated fatty acids | |
| 129. |
The most important buffer in RBC is____________? |
| A. | O2 Hb +Na hemoglobinate |
| B. | O2Hb +K hemoglobinate |
| C. | H2CO3 + KHCO3 |
| D. | H2CO3 +NAHCO3 |
| Answer» E. | |
| 130. |
The most common enzyme deficiency in man is___________? |
| A. | Glucose 6 phosphate dehydrogenase |
| B. | Glucose 6 phosphatase |
| C. | Hexokinase |
| D. | Glucose 1,6 diphosphatase |
| Answer» B. Glucose 6 phosphatase | |
| 131. |
The most abundant protein present in body is_____________? |
| A. | Globulin |
| B. | Albumin |
| C. | Collagen |
| D. | Hemoglobin |
| Answer» D. Hemoglobin | |
| 132. |
The monsaccharide glucose is best described by which one of the following statements ? |
| A. | It usually exists in the furanose form |
| B. | It is a ketose |
| C. | It possessesan anomeric C-2 carbon atom |
| D. | It formspart of the disaccharide sucrose |
| Answer» E. | |
| 133. |
The mineral having sparing action on Vitamin E_______________? |
| A. | Chromium |
| B. | Iron |
| C. | Iodine |
| D. | Selenium |
| Answer» E. | |
| 134. |
The maximum content of vitamin E is found in____________? |
| A. | Cold liver oil |
| B. | Fish liver oil |
| C. | Wheat germ oil |
| D. | Liver |
| Answer» D. Liver | |
| 135. |
The major lipids that make up the cell membrane are_______________? |
| A. | Triglycerides |
| B. | Phospholipids |
| C. | Sphingomyelins |
| D. | Fatty acids |
| Answer» C. Sphingomyelins | |
| 136. |
The major fuel for the brain after several weeds of starvation______________? |
| A. | Glucose |
| B. | Fatty acid |
| C. | Beta hydroxy butyrate |
| D. | Glycerol |
| Answer» D. Glycerol | |
| 137. |
The major driving force for formation of membrane lipid bilayer is____________? |
| A. | Hydrogen bonding |
| B. | Hydrophobic interactions |
| C. | Vander wall forces |
| D. | Not known |
| Answer» C. Vander wall forces | |
| 138. |
The main site of fluoride inhibition in the Embden Meyerhof pathway of acid____________? |
| A. | ATPase |
| B. | Enolase |
| C. | Pyruvate Kinase |
| D. | Fructose 6 phosphatase |
| Answer» C. Pyruvate Kinase | |
| 139. |
The main pathways of metabolism in brain are______________? |
| A. | Glycolysis and citric acid cycle |
| B. | Glycogenolysis and Gluconeogenesis |
| C. | Embden-Meyerhof Pathway and H.M.P shunt |
| D. | Glycogenolysis and Citric and cycle |
| Answer» B. Glycogenolysis and Gluconeogenesis | |
| 140. |
The main pathway for De – Novo synthesis of fatty acids occurs in_______________? |
| A. | Mitochondria |
| B. | Nucleus |
| C. | Cytosol |
| D. | None of the above |
| Answer» D. None of the above | |
| 141. |
The main function of mitochondria is______________? |
| A. | Protein synthesis |
| B. | Oxidation |
| C. | Electron transfer |
| D. | Fat synthesis |
| Answer» D. Fat synthesis | |
| 142. |
The main function of HDL is____________? |
| A. | Transport cholesterol from liver to peripheral tissues |
| B. | Esterification with PUFA |
| C. | Both of the above |
| D. | None of the above |
| Answer» E. | |
| 143. |
The main enzyme responsible for activation of xenobiotics in (detoxification)____________? |
| A. | Cytochrome P-450 |
| B. | Glutathione S-transferase |
| C. | NADPH cytochrome P-450 reductase |
| D. | Glucuronyl transferase |
| Answer» B. Glutathione S-transferase | |
| 144. |
The lipoprotein particles that have the highest percentage concentration of cholesterol is_______________? |
| A. | Chylomicron |
| B. | VLDL (Very low density lipoprotein) |
| C. | LDL (Low density lipoprotein) |
| D. | HDL (High density lipoprotein) |
| Answer» D. HDL (High density lipoprotein) | |
| 145. |
The lipid, which acumulates in fatty liver, is_______________? |
| A. | Triglycerides |
| B. | FFA |
| C. | Lipoprotein |
| D. | Cholesterol |
| Answer» B. FFA | |
| 146. |
The key enzyme of gluconeogenesis is______________? |
| A. | Pyruvate carboxylase |
| B. | Fructose 1,6 disphosphatase |
| C. | Glucose 6 phosphatase |
| D. | Phosphoenol pyruvate carboxykinase |
| Answer» B. Fructose 1,6 disphosphatase | |
| 147. |
The ketone bodies, which are excreted in diabetic ketoacidosis ? |
| A. | Acetoacetic acid and pyruvic acid |
| B. | Acetoacetic acid and oxalocacetic acid |
| C. | Acetoacetic acid and alpha ketoglutaric acid |
| D. | Acetoacetic acid and beta hydroxyl butyric acid |
| Answer» E. | |
| 148. |
The initiation codon for protein synthesis is_____________? |
| A. | AUG |
| B. | UAA |
| C. | UUU |
| D. | UAG |
| Answer» B. UAA | |
| 149. |
The immediate precursor of norepinephrine is______________? |
| A. | Epinephrine |
| B. | Tyrosine |
| C. | Dopamine |
| D. | Phenylalanine |
| Answer» D. Phenylalanine | |
| 150. |
The human plasma lipoprotein containing the highest percentage of triacylglycerol by weight is______________? |
| A. | VLDL |
| B. | Chylomicrons |
| C. | HDL |
| D. | LDL |
| Answer» C. HDL | |