Description : Hereditary fructose intolerance involves the absence of the enzyme: (A) Aldalose B (B) Fructokinase (C) Triokinase (D) Phosphotriose isomerase
Last Answer : Answer : A
Description : Lesch-Nyhan syndrome, the sex linked, recessive absence of HGPRTase, may lead to (A) Compulsive self destructive behaviour with elevated levels of urate in serum (B) Hypouricemia due to liver damage (C) Failure to thrive and megaloblastic anemia (D) Protein intolerance and hepatic encephalopathy
Description : All the following may occur in myxoedema except (A) Cold intolerance (B) Low BMR (C) Tachycardia (D) Dry and coarse skin
Last Answer : Answer : C
Description : Clinical features of hyperthyroidism include (A) Goitre, heat intolerance, weight loss and tachycardia (B) Goitre, tremors, tachycardia and cold intolerance (C) Exophthalmos, goiter, tachycardia and loss of appetite (D) Exophthalmos, goiter, tremors and obesity
Description : There can be intolerance with respect to the following sugar: (A) Glucose (B) Lactose (C) Maltose (D) Xylose
Last Answer : Answer : B
Description : Sucrose intolerance leads to (A) Hyper glycemia (B) Glycosuria (C) Diarrhoea (D) Hypoglycemia
Description : Galactose intolerance can occur in (A) Haemolytic jaundice (B) Hepatocellular jaundice (C) Obstructive jaundice (D) None of these
Description : Which of the following suggests a diagnosis of familial combined hyperlipidaemia (FCHL) rather than heterozygous familial hypercholesterolaemia (FH)? 1) Tendon xanthomas 2) Presence of glucose ... premature coronary artery disease 4) Presence of arcus senilus 5) Absence of hyperuricaemia
Last Answer : Answers-2 The genetic dislipidaemias occur in one third of patients who have suffered from their first myocardial infarction below the age of 50 years in men. The commonest is familial combined ... xanthomata and arcus cornea are rarely present in children, but are very important signs to identify.
Description : In which of the following is mental retardation an expected finding? 1) Alkaptonuria 2) Cystinuria 3) Glycogen storage disease 4) Lactose intolerance 5) Maple syrup urine disease
Last Answer : Answers-5 MENTAL RETARDATION. Fragile X syndrome-commonest male cause. Hypoxia at birth, intaventricular haemorrhage, rhesus disease, Congenital infections - toxoplasmosis, CMV, rubella ... with diet. -homocystinuria, phenylketonuria -maple syrup urine disease, tryptophanuria -galactosaemia
Description : Which of the following organ prefers fructose to glucose (A) Liver (B) Testes (C) Pancreas (D) Heart
Description : Glucocorticoids increase the synthesis of all of the following except (A) Glucokinase (B) Glucose-6-phosphatase (C) Fructose-1, 6-biphosphatase (D) Pyruvate carboxylase
Description : Insulin increases the activity of (A) Pyruvate kinase (B) Phosphorylase (C) Triacylglycerol kinase (D) Fructose 2, 6-bisphosphatase
Description : Hyperglycemic effect of glucocorticoids is due to (A) Inactivation of protein phosphatase (B) Inactivation of fructose 1,6-biphosphatase (C) Stimulation of synthesis of pyruvate carboxylase (D) Stimulation of synthesis of eltroxykinase
Description : The fruit when kept is open, tastes bitter after 2 hours because of (A) Loss of water from juice (B) Decreased concentration of fructose in juice (C) Fermentation by yeast (D) Contamination by bacterial enzymes
Last Answer : Answer : D
Description : Fructose 2, 3 bi phosphate is a powerful allosteric activator of (A) Fructose 1, 6 diphosphatase (B) Phosphofructokinase (C) Hexokinase (D) Fructokinase
Description : A substrate for the enzyme aldolase is (A) galactose-6-phosphate (B) isocitric acid (C) Glucose-1-phosphate (D) Fructose 1, 6 diphosphate
Description : Phosphofructokinase is allosterically inhibited by (A) Fructose-1, 6-biphosphate (B) Lactate (C) Pyruvate (D) Citrate
Description : A specific fructokinase present in liver has a very high affinity for its substrate because (A) Km for fructose is very high (B) Km for fructose is very low (C) Activity is affected by fasting (D) Activity is affected by insulin
Description : Conversion of fructose to sorbitol is catalysed by the enzyme: (A) Sorbitol dehydrogenase (B) Aldose reductase (C) Fructokinase (D) Hexokinase
Description : Hemolytic anemia is caused by the deficiency of certain enzymes of the pentose phosphate pathway, the principal enzyme involved is (A) Glucose-6-phosphate dehydrogenase (B) Aldolase (C) Fructose 1, 6-bisphosphatase (D) Phosphohexose isomerase
Description : Pentose phosphate pathway is of significance because it generates (A) NADPH for reductive synthesis (B) Regenerates glucose 6-phosphate (C) Generates fructose 6-phosphate (D) Forms glyceraldehyde 3-phosphate
Description : A reaction which may be considered an isomerisation is (A) Glucose 6-Phosphate fructose 6 phosphate (B) 3-Phosphoglycerate 2-phosphoglycerate (C) 2-phosphoglycerate phosphoenolpyruvate (D) Pyruvate Lactate
Description : Hexokinase is inhibited in an allosteric manner by (A) Glucose-6-Phosphate (B) Glucose-1-Phosphate (C) Fructose-6-phosphate (D) Fructose-1, 6-biphosphate
Description : In the figures shown below, fructose 1,6- biphosphate is located at point: (A) A (B) B (C) C (D) D
Description : In the intestine the rate of absorption is highest for (A) Glucose and galactose (B) Fructose and mannose (C) Fructose and pentose (D) Mannose and pentose
Description : The sugar absorbed by fac i l itated diffusion and requiring Na independent transporter is (A) Glucose (B) Fructose (C) Galactose (D) Ribose
Description : Spermatozoa in seminal fluid utilises the following sugar for metabolism: (A) Galactose (B) Glucose (C) Sucrose (D) Fructose
Description : Selwanof’s test is positive in (A) Glucose (B) Fructose (C) Galactose (D) Mannose
Description : Milk sugar is known as (A) Fructose (B) Glucose (C) Sucrose (D) Lactose
Description : Fatty acids can not be converted into carbohydrates in the body, as the following reaction is not possible: (A) Conversion of glucose-6-phosphate into glucose (B) Fructose 1, 6 diphosphate to ... phosphate (C) Transformation of acetyl CoA to pyruvate (D) Formation of acetyl CoA from fatty acids
Description : All the following are ketones except (A) Xylulose (B) Ribolose (C) Erythrose (D) Fructose
Description : Which one of the following metabolites is not directly produced in the hexose monophosphate pathway? (A) Fructose-6-phosphate (B) Dihydroxy acetone phosphate (C) CO2 (D) Erythrose-4-phosphate
Description : Invert sugar is (A) Lactose (B) Mannose (C) Fructose (D) Hydrolytic product of sucrose
Last Answer : D
Description : Starch and glycogen are polymers of (A) Fructose (B) Mannose (C) α−D-Glucose (D) Galactose
Last Answer : C
Description : Which of the following is not reducing sugar? (A) Lactose (B) Maltose (C) Sucrose (D) Fructose
Description : Cane sugar is known as (A) Galactose (B) Sucrose (C) Fructose (D) Maltose
Last Answer : B
Description : On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose
Last Answer : A
Description : Epimers of glucose is (A) Fructose (B) Galactose (C) Ribose (D) Deoxyribose
Description : Which of the following reactions is unique to gluconeogenesis? (A) Lactate Pyruvate (B) Phosphoenol pyruvate pyruvate (C) Oxaloacetate phosphoenol pyruvate (D) Glucose-6-phosphate Fructose-6-phosphate
Description : Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in ... ) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte
Description : The reaction catalysed by phosphofructokinase (A) Is activated by high concentrations of ATP and citrate (B) Uses fruitose-1-phosphate as substrate (C) Is the rate-limiting reaction of the glycolytic pathway (D) Is inhibited by fructose 2, 6-bisphosphate
Description : Which of the following is a substrate for aldolase activity in Glycolytic pathway? (A) Glyceraldehyde-3-p (B) Glucose-6-p (C) Fructose-6-p (D) Fructose1, 6-bisphosphate
Description : The 4 rate limiting enzymes of gluconeogenesis are (A) Glucokinase, Pyruvate carboxylae phosphoenol pyruvate carboxykinase and glucose-6-phosphatase (B) Pyruvate carboxylase, phosphoenol ... fructokinase, pyruvate carboxylase, phosphoenol pyruvate carboxykinase and fructose 1, 6 diphosphatase
Description : Fatty acids cannot be converted into carbohydrates in the body as the following reaction is not possible. (A) Conversion of glucose-6-phosphate into glucose (B) Fructose 1,6-bisphosphate to fructose- ... (C) Transformation of acetyl CoA to pyruvate (D) Formation of acetyl CoA from fatty acids
Description : During glycolysis, Fructose 1, 6 diphosphate is decomposed by the enzyme: (A) Enolase a (B) Fructokinase (C) Aldolase (D) Diphosphofructophosphatose
Description : Cane sugar (Sucrose) injected into blood is (A) changed to fructose (B) changed to glucose (C) undergoes no significant change (D) changed to glucose and fructose
Description : Cerebrosides consist of mostly of this sugar: (A) Glucose (B) Fructose (C) Galactose (D) Arabinose
Description : Blood group substances consist of (A) Lactose (B) Maltose (C) Fructose (D) Mucose
Description : The epimers of glucose is (A) Fructose (B) Galactose (C) Ribose (D) Deoxyribose