Competitive Carbohydrate Metabolism ( Biochemistry ) MCQs – Most Updated Medical MCQs
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Latest Carbohydrate Metabolism ( Biochemistry ) Mcqs
The most occurred mcqs of Carbohydrate Metabolism ( Biochemistry ) in past papers. Past papers of Carbohydrate Metabolism ( Biochemistry ) Mcqs. Past papers of Carbohydrate Metabolism ( Biochemistry ) Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Carbohydrate Metabolism ( Biochemistry ) Mcqs. The Important series of Carbohydrate Metabolism ( Biochemistry ) Mcqs are given below:
Insulin increase the following pathways in liver EXCEPT____________?
A. Glycogen synthesis
B. Fatty acid synthesis
C. Protein syntehsis
D. Glucose synthesis
Most lipogenic____________?
A. Fructose
B. Galactose
C. Glucose
D. Ribose
Type II glycogen storage disorder is due to deficiency of______________?
A. Alpha -Glucosidase
B. Muscle phosphorylase
C. Alpha galactosidase
D. Acid Lipase
Dietary fibre is rich in_____________?
A. Collagen
B. Cellulose
C. Starch
D. Inulin
Fructose intolerance is to_____________?
A. Fructose and glucose
B. Fructose only
C. Sucrose only
D. Fructose and sucrose
The monsaccharide glucose is best described by which one of the following statements ?
A. It is a ketose
B. It usually exists in the furanose form
C. It possessesan anomeric C-2 carbon atom
D. It formspart of the disaccharide sucrose
Number of ATP molecules generated in the conversion of glycogen of lactate is_____________?
A. 2
B. 38
C. 36
D. 32
NADPH is generated by the action of____________?
A. Glucose 6 phosphate dehydrogenase
B. Glucose 1,6 diphosphate dehydrogenase
C. Glucose 1 phosphate dehydrogenase
D. All of the above
HMP shunt is of great importance in cellular metabolism because its produces_____________?
A. ADP
B. ATP
C. Acetyl CoA
D. NADPH
Glucose 6 phosphatase deficiency is seen in______________?
A. McArdles syndrome
B. Von Gierke’s disease
C. Pomper’s disease
D. Downs syndrome
Sites where HMP shunts can occur include_______________?
A. WBC
B. Liver
C. Lactating mammary gland
D. Testes
E. All of the above
Step in HMP pathway requiring TPP_____________?
A. 6 phosphogluconate dehydrogenase
B. G6 PD
C. Transketolase
D. Transaldolase
1 molelcule of glucose forms _______ molecules of pyruvate?
A. 3
B. 2
C. 1
D. 4
The main pathways of metabolism in brain are______________?
A. Glycolysis and citric acid cycle
B. Embden-Meyerhof Pathway and H.M.P shunt
C. Glycogenolysis and Gluconeogenesis
D. Glycogenolysis and Citric and cycle
In glycolysis ATP is produced by the following enzyme______________?
A. Enolase
B. Phosphoglycerate kinase
C. Hexokinase
D. Phosphohexose isomerase
Inhibition of glycolysis by O2 is known a_____________?
A. Hill reaction
B. Pasteur effect
C. Muni effect
D. Gluconeogenesis
Which one of the following is the correct sequential order in which the given enzymes of kreb’s cycle are formed after a molecule of acetyl CoA______________?
A. Citrate, Oxalocetate, Ketoglutarate
B. Citrate, Ketoglutarate, Oxalocetate
C. Ketoglutarate, Oxalocetate, Citrate
D. Oxalocetate, Ketoglutarate, Citrate
Kreb’s cycle does not occur in______________?
A. Heart
B. RBC
C. Muscle
D. All of the above
In TCA cycle or tricarboxylic acid cycle, which is first formed________________?
A. Succinate
B. Citrate
C. Isocitrate
D. Fumarate
Renal threshold for glucose is______________?
A. 100 mg%
B. 80 mg%
C. 180 mg/ dl
D. 200 mg%
The key enzyme of gluconeogenesis is______________?
A. Pyruvate carboxylase
B. Glucose 6 phosphatase
C. Fructose 1,6 disphosphatase
D. Phosphoenol pyruvate carboxykinase
Which one of the following is a monosaccharide______________?
A. Sucrose
B. Maltose
C. Fructose
D. Strach
Which of the following is abnormal constituent of urine_____________?
A. glucose
B. Urea
C. Creatine
D. None of the above
The conversion of glucose 6-P to fructose 6-P is an example of which of the following reactions___________?
A. Dehydration
B. Isomerisation
C. Phosphate transfer
D. Aldol cleavage
Cane sugar is____________?
A. Fructose
B. Surose
C. Glucose
D. Maltose
In TCA, substrate level phospherylation takes place in______________?
A. Succinate to fumarate
B. Succinyl CoA to Succinate
C. Alpha ketoglutrate to succinyl CoA
D. Oxalocetate to citrate
Enzymes concerned with the citric acid cycle are found in the____________?
A. Ribosomes
B. Nucleus
C. Mitochondria
D. Nonparticulate cytoplasm
All of the following are substrates for gluconeogenesis except_______________?
A. Glycerol
B. Oleic acid
C. Alanine
D. Tryptophan
During conversion of glycerol to pyruvic acid, the first glycolytic intermediate to form is_______________?
A. 3- phospho glyceric acid
B. 2- phospho glyceric acid
C. 3- phospho glyceralehyde
D. Dihydroxy acetone phosphate
The first product of glycogenolysis is_____________?
A. Glucose 1,6 diphosphatase
B. Glucose 6 phosphatase
C. Glucose 1- phosphatase
D. Fructose 1- phosphatase
Glucose can be synthesized from all except_____________?
A. Glycerol
B. Amino acids
C. Acetoacetate
D. Lactic acid
The tissue with the highest glycogen content (mg/100gm)_____________?
A. Liver
B. Kidneys
C. Muscle
D. Testes
Major contribution towards gluconeogenesis is by____________?
A. Lactate
B. Ketones
C. Glycerol
D. Alanine
An essential for the conversion of glucose to glycogen in liver is____________?
A. UTP
B. Pyruvate Kinase
C. GTP
D. Guanosine
Which of the following enzymes use NADP as coenzyme ________________?
A. Lactate dehydrogenase
B. Glyceraldehyde 3 phosphate dehydrogenase
C. Glucose 6-Phosphate dehydrogenase
D. Beta hydroxy acyl CoA dehydrogenase
In prolonged starvation the main nergy source of brain is_____________?
A. Fructose
B. Ketone bodies
C. Glucose
D. Fatty acids
The citric acid cycle is the final pathway for oxidation of______________?
A. Vitamins
B. Enzymes
C. Minerals
D. None of the above
The uptake of glucose by the liver increase following a carbohydrate meal because____________?
A. There is increase in phosphorylation of glucose by glucokinase
B. Glucokinase has a low Km for glucose
C. GLUT-2 stimulated by insulin
D. Hexokinase in liver has a high affinity for glucose
Which one of the following enzymes provides a link between glycolysis and the citric acid cycle ?
A. Pyruvate kinase
B. Lactate dehydrogenase
C. Citrate synthase
D. Pyruvate dehydrogenase
Increase in pyruvate and lactate is seen in which of the following deficiency ?
A. Thiamine
B. Niacin
C. Pyridoxine
D. Vitamin C
Glycogen breakdown leads to formation of______________?
A. Lactic acid
B. Glucose
C. Glucose & Lactic acid
D. Glycoprotein
Which is not a oligosaccharide sugar ?
A. Galactose
B. Maltose
C. Lactose
D. Sucrose
One molecule of acetyl Co-A gives rise to ________ ATP molecules?
A. 8
B. 2
C. 12
D. 32
All these reactions take place inside the mitochondria except____________?
A. EMP pathway
B. Urea cycle
C. Krebs cylce
D. Electron transfer
Which of the following is not a product of HMP shunt_____________?
A. D fructose 6 phosphate
B. NADPH
C. D sedoheptulose 5 phosphate
D. D glyceraldehyde 3 phosphate
All are true regarding glucose 6 phosphate deficiency except______________?
A. Defective cori cycle
B. Hyperglycemia
C. Hyperuricemia
D. Increased mobilization of glycogen from liver
Blood glucose level cannot be augmented by mobilization of muscle glycogen due to lack of_____________?
A. Aldolase
B. G-6-P phydrogenase
C. G-6-P dehydrogenase
D. Glucokinase
Galactosemia commonly is due to deficiency of_____________?
A. Galactose 1 phosphatase uridyl transferase
B. Glucose 1 phosphatase
C. Galactose 1 phosphatase
D. Glucose 6 phosphatase
In which type of glycogen storage disease is hyper uricemia a feature ?
A. I
B. III
C. II
D. IV
McArdles disease is due to the deficiency of_____________?
A. Glucose 1,6 phosphatase
B. Glucose 1 phosphatase
C. Glucose 6 phosphatase
D. Myophosphorylase
An enzyme not involved in glycolysis is______________?
A. Phosphoglycero mutase
B. Enolase
C. Aldolase
D. Glycerophosphate dehydrogenase
Phosphofructokinase is the key enzyme of______________?
A. Glycolysis
B. Beta oxidation
C. Gluconeogenesis
D. TCA cycle
Which metabolite of TCA cycle is used in detoxification of ammonia in brain_____________?
A. Alpha ketoglutarate
B. Oxalocetate
C. Ornithine
D. Glycine
In TCA cycle, citrate is converted in to after losing a molecule of H2O_____________?
A. Oxalocetate
B. Cisaconitate
C. Isocitrate
D. Glutarate
In TCA cycle substrate level phosphorylation occurs at____________?
A. Malonate reduction
B. Succinate dehydrogenase
C. Thiokinase
D. None of the above
Which of the following is correctly matched ?
A. Succinate to furmarate -1 ATP is formed
B. Succinyl CoA to succinate -1 ATP is formed
C. Isocitrate to oxalo succinate -1 ATP is formed
D. Malate to oxaloacetate -1 ATP is formed
The enzyme involved in the first committed step of glycolysis is____________?
A. Glucose-6-Phosphatase
B. Phosphofructokinase
C. Hexokinase
D. Enolase
The end product of glycolysis under anaerobic conditions is_______________?
A. Lactic acid
B. Acetoacetic acid
C. Pyruvic acid
D. Oxaloacetic acid
Which of the following is a non-reducing sugar____________?
A. Maltose
B. Glucose
C. Lactose
D. Sucrose
What high energy phosphate compound is formed in the citric acid cycle through substrate level phosphorylation______________?
A. TTP
B. ATP
C. ITP
D. GTP
The main enzyme responsible for activation of xenobiotics in (detoxification)____________?
A. Cytochrome P-450
B. Glucuronyl transferase
C. NADPH cytochrome P-450 reductase
D. Glutathione S-transferase
Which acid is formed in the citric acid cycle ?
A. Oxaloacetic acid
B. Nitric acid
C. Glutamic acid
D. None of the above
Kreb’s cycle occurs in _________ conditions?
A. Aerobic
B. Microaerophilic
C. Anaerobic
D. Aerobic and anaerobic
Which of them is multienzyme complex_____________?
A. Alpha ketoglutarate dehydrogenase
B. Pyruvate dehydrogenase
C. Succinate dehydrogenase
D. Enolase
E. Both A & B
Which of the following statement is TRUE? The hydrolysis of lactose yields glucose and galactose_____________?
A. The hydrolysis of lactose yields glucose and galactose
B. The hydrolysis of sucrose yields only glucose
C. The hydrolysis of maltose yields glucose and fructose
D. All of the above statements are true
The compound that can give rise to glucose by gluconeogenesis is_____________?
A. Palmitic acid
B. Lactate
C. Acetyl CoA
D. Fructose
Insulin acts on which enzyme in glycolysis ?
A. Glucokinase
B. Glucose 6 phosphatase
C. Hexokinase
D. Adenylate kinase
Adrenaline acts on which enzyme in glycogenolysis ?
A. Hexokinase
B. Glucokinase
C. Phosphorylase
D. Glucose diphosphatase
Gluconeogenesis occurs in the liver and _______?
A. Kidney
B. Heart
C. Muscle
D. Fat
Glycogen synthesis is increased by_____________?
A. GH
B. Insulin
C. Cortisone
D. Epinephrine
Which of the following is not a polymer of glucose?
A. Cellulose
B. Glycogen
C. Amylase
D. Inulin
The rate of absorption of sugars by the small intestine is highest for_______________?
A. Disaccharides
B. Pentoses
C. Polysaccharides
D. Hexoses