The optimal pH for the enzyme pepsin is (A) 1.0–2.0 (B) 4.0–5.0 (C) 5.2–6.0 (D) 5.8–6.2

The optimal pH for the enzyme pepsin is (A) 1.0–2.0 (B) 4.0–5.0 (C) 5.2–6.0 (D) 5.8–6.2
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The optimal pH for the enzyme trypsin is (A) 1.0–2.0 (B) 2.0–4.0 (C) 5.2–6.2 (D) 5.8–6.2

Description : The optimal pH for the enzyme trypsin is (A) 1.0–2.0 (B) 2.0–4.0 (C) 5.2–6.2 (D) 5.8–6.2

Last Answer : Answer : C

The optimal pH for the enzyme chymotrypsin is (A) 2.0 (B) 4.0 (C) 6.0 (D) 8.0

Description : The optimal pH for the enzyme chymotrypsin is (A) 2.0 (B) 4.0 (C) 6.0 (D) 8.0

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The optimal pH for the enzyme rennin is (A) 2.0 (B) 4.0 (C) 8.0 (D) 6.0

Description : The optimal pH for the enzyme rennin is (A) 2.0 (B) 4.0 (C) 8.0 (D) 6.0

Last Answer : Answer : B

Gastric enzyme pepsin acts only in acidic medium with in a limited pH concentration. It varies `:`

Description : Gastric enzyme pepsin acts only in acidic medium with in a limited pH concentration. It varies `:`

Last Answer : Gastric enzyme pepsin acts only in acidic medium with in a limited pH concentration. It varies `:` A. 1.20 to 1.80 ... C. 2.00 to 2.50 D. 1.50 to 2.60

Enzyme pepsin acts upon food at a pH of about `:-`

Description : Enzyme pepsin acts upon food at a pH of about `:-`

Last Answer : Enzyme pepsin acts upon food at a pH of about `:-` A. 3 to split proteins B. 2 to ... protein into peptones D. 2 to change protein in amino acids

All the following statements about pepsin are correct except (A) It is smaller than pepsinogen (B) It is formed by the action of HCl on its precursor (C) Its optimum pH is 1.0–2.0 (D) It hydrolyses the C-terminal and N-terminal peptide bonds of proteins

Description : All the following statements about pepsin are correct except (A) It is smaller than pepsinogen (B) It is formed by the action of HCl on its precursor (C) Its optimum pH is 1.0–2.0 (D) It hydrolyses the C-terminal and N-terminal peptide bonds of proteins

Last Answer : Answer : D

Which of the following is a proteolytic enzyme? (A) Pepsin (B) Trypsin (C) Chymotrypsin (D) All of these

Description : Which of the following is a proteolytic enzyme? (A) Pepsin (B) Trypsin (C) Chymotrypsin (D) All of these

Last Answer : Answer : D

If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen? (a) The pancreatic enzymes and specially the trypsin and lipase will not work efficiently. (b) The pH of stomach will fall abruptly. (c) Steapsin will be more effective. (d) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones.

Description : If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen? (a) The pancreatic enzymes and specially the trypsin and lipase will ... more effective. (d) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones.

Last Answer : (d) Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones.

Enzyme pepsin acts in `:`

Description : Enzyme pepsin acts in `:`

Last Answer : Enzyme pepsin acts in `:` A. acidic medium in the pancreas B. acidic medium in the stomach C. intestine D. mouth

Which enzyme is present in all members of the animal kingdom except Protozoa? (1) Insulin (2) Pepsin (3) Renin (4) Amylase

Description : Which enzyme is present in all members of the animal kingdom except Protozoa? (1) Insulin (2) Pepsin (3) Renin (4) Amylase

Last Answer : (4) Amylase Explanation: Digestion in Protozoa is carried on by several enzymes such as peptidase, proteinase, lipase, etc. For example, Insulin has important role in the glucose uptake of protozoa. ... is due to the absence of amylase that protozoa such as amoeba cannot digest fats and starch.

If the stomach did not produce any hydrochloric acid, which enzyme will not function? (1) Ptyalin (2) Rennin (3) Pepsin (4) Lipase

Description : If the stomach did not produce any hydrochloric acid, which enzyme will not function? (1) Ptyalin (2) Rennin (3) Pepsin (4) Lipase

Last Answer : (3) Pepsin Explanation: Hydrochloric acid converts pepsinogen into an enzyme called pepsin. When food enters the stomach, hydrochloric acid production increases and the pH may fall to as low as 1 or 2, a very acidic condition.

Which enzyme digests proteins in the stomach? (1) Trypsin (2) Pepsin (3) Salivary amylase (4) Pancreatic canal

Description : Which enzyme digests proteins in the stomach? (1) Trypsin (2) Pepsin (3) Salivary amylase (4) Pancreatic canal

Last Answer : (2) Pepsin Explanation: Protein digestion begins in the stomach with the action of pepsin. Pepsin is the active protein-digesting enzyme of the stomach. When pepsin acts on the protein ... that are digested in the small intestine with the help of trypsin, chymotrypsin, and carboxypeptidase.

Which enzyme is present in all members of the animal kingdom except Protozoa? (1) Insulin (2) Pepsin (3) Renin (4) Amylase

Description : Which enzyme is present in all members of the animal kingdom except Protozoa? (1) Insulin (2) Pepsin (3) Renin (4) Amylase

Last Answer : (4) Amylase Explanation: Protozoa lack amylase which is required for the digestion of facts and starch.

The enzyme that is present in the saliva of man is - (1) Pepsin (2) Renin (3) Amylase (4) Trypsin

Description : The enzyme that is present in the saliva of man is - (1) Pepsin (2) Renin (3) Amylase (4) Trypsin

Last Answer : (3) Amylase Explanation: Amylase is an enzyme that catalyses the breakdown of starch into sugars. Amylase is present in human saliva, where it begins the chemical process of digestion. Foods ... bacteria also produce amylase. As diastase, amylase was the first enzyme to be discovered and isolated.

Which enzyme converts proteins? (1) Pepsin (2) Trypsin (3) Erepsin (4) Enterokinase

Description : Which enzyme converts proteins? (1) Pepsin (2) Trypsin (3) Erepsin (4) Enterokinase

Last Answer : (2) Trypsin Explanation: Trypsin is a serine protease found in the digestive system of many vertebrates, where it hydrolyses proteins. Trypsin in the duodenum catalyses the hydrolysis of peptide ... then be further hydrolyzed into amino acids by other proteases before they enter the blood stream.

Which one of the following is not a digestive enzyme? (1) Pepsin (2) Renin (3) Insulin (4) Amylopsin

Description : Which one of the following is not a digestive enzyme? (1) Pepsin (2) Renin (3) Insulin (4) Amylopsin

Last Answer : (3) Insulin Explanation: Insulin is a peptide hormone, produced by beta cells of the pancreas, and is central to regulating carbohydrate and fat metabolism in the body. Insulin causes cells in ... and skeletal muscles, glucose is stored as glycogen, and in adipocytes it is stored as triglycerides.

What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Description : What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar

Last Answer : (3) It converts proteins into peptones Explanation: Pepsin is an endopeptidase that breaks down proteins into peptone and polypeptides. If is produced in the stomach and is one of the main digestive enzymes.

Which of the following is not an enzyme? A. Chemotrypsin B. Secretin (Answer) C. Pepsin D. none

Description : Which of the following is not an enzyme? A. Chemotrypsin B. Secretin (Answer) C. Pepsin D. none

Last Answer : B. Secretin (Answer)

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor? (a) In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin. (b) Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin. (c) Gastric juice will be deficient in chymosin. (d) Gastric juice will be deficient in pepsinogen.

Description : What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor? (a) In the absence of HCl secretion, inactive pepsinogen is not converted into the active ... c) Gastric juice will be deficient in chymosin. (d) Gastric juice will be deficient in pepsinogen.

Last Answer : (a) In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin.

Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin  →  Amino acids (b) Stomach : Fats Lipase  →  Micelles (c) Duodenum : Triglycerides Trypsin  →  Monoglycerides (d) Small intestine : Starch α-Amylase  →  Disaccharide (maltose)

Description : Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin  →  ... Trypsin  →  Monoglycerides (d) Small intestine : Starch α-Amylase  →  Disaccharide (maltose)

Last Answer : (d) Small intestine : Starch α-Amylase  →  Disaccharide

Which of the following options best represents the enzyme composition of pancreatic juice? (a) Amylase, Pepsin, Trypsinogen, Maltase (b) Peptidase, Amylase, Pepsin, Rennin (c) Lipase, Amylase, Trypsinogen, Procarbo- xypeptidase (d) Amylase, Peptidase, Trypsinogen, Rennin

Description : Which of the following options best represents the enzyme composition of pancreatic juice? (a) Amylase, Pepsin, Trypsinogen, Maltase (b) Peptidase, Amylase, Pepsin, Rennin (c) Lipase, Amylase, Trypsinogen, Procarbo- xypeptidase (d) Amylase, Peptidase, Trypsinogen, Rennin

Last Answer : (c) Lipase, Amylase, Trypsinogen, Procarbo- xypeptidase

The enzyme enterokinase helps in conversion of (a) protein into polypeptides (b) trypsinogen into trypsin (c) caseinogen into casein (d) pepsinogen into pepsin.

Description : The enzyme enterokinase helps in conversion of (a) protein into polypeptides (b) trypsinogen into trypsin (c) caseinogen into casein (d) pepsinogen into pepsin.

Last Answer : (b) trypsinogen into trypsin

Which of the following terms describes a gastric secretion that combines with vitamin B-12 so that it can be absorbed? a) Intrinsic factor Lack of intrinsic factor is a common finding in the aged patient. b) Amylase Amylase is an enzyme that aids in the digestion of starch. c) Pepsin Pepsin is a gastric enzyme important in protein digestion. d) Trypsin Trypsin is an enzyme that aids in the digestion of protein.

Description : Which of the following terms describes a gastric secretion that combines with vitamin B-12 so that it can be absorbed? a) Intrinsic factor Lack of intrinsic factor is a common finding in the aged ... in protein digestion. d) Trypsin Trypsin is an enzyme that aids in the digestion of protein.

Last Answer : a) Intrinsic factor Lack of intrinsic factor is a common finding in the aged patient.

Pancreatic juice contains more than one enzyme. Which among the following combination is correct ? (1) Pepsin and Lipase (2) Amylase and Pepsin (3) Pepsin and Trypsin (4) Trypsin and Lipase

Description : Pancreatic juice contains more than one enzyme. Which among the following combination is correct ? (1) Pepsin and Lipase (2) Amylase and Pepsin (3) Pepsin and Trypsin (4) Trypsin and Lipase

Last Answer : 4) Trypsin and Lipase

Which of the following options best represents the enzyme composition of pancreatic juice ? (1) amylase, pepsin, trypsinogen, maltase (2) peptidase, amylase, pepsin, rennin (3) lipase, amylase, trypsinogen, procarboxypeptidase (4) amylase, peptidase, trypsinogen, rennin

Description : Which of the following options best represents the enzyme composition of pancreatic juice ? (1) amylase, pepsin, trypsinogen, maltase (2) peptidase, amylase, pepsin, rennin (3) lipase, amylase, trypsinogen, procarboxypeptidase (4) amylase, peptidase, trypsinogen, rennin

Last Answer : (3) lipase, amylase, trypsinogen, procarboxypeptidase

The enzyme which can act in Acidic and basic media both (a) Lipase (b) Trypsin (c) Pepsin (d) Ptyalin

Description : The enzyme which can act in Acidic and basic media both (a) Lipase (b) Trypsin (c) Pepsin (d) Ptyalin

Last Answer : (d) Ptyalin

Which enzyme digests plant protein (a) Pepsin (b) Erepsin (c) Renin (d) All these

Description : Which enzyme digests plant protein (a) Pepsin (b) Erepsin (c) Renin (d) All these

Last Answer : (a) Pepsin

Which enzyme digests proteins in the stomach? (1) Trypsin (2) Pepsin (3) Salivary amylase (4) Pancreatic canal

Description : Which enzyme digests proteins in the stomach? (1) Trypsin (2) Pepsin (3) Salivary amylase (4) Pancreatic canal

Last Answer : Pepsin

Which enzyme is present in all members of the animal kingdom except Protozoa? (1) Insulin (2) Pepsin (3) Renin (4) Amylase

Description : Which enzyme is present in all members of the animal kingdom except Protozoa? (1) Insulin (2) Pepsin (3) Renin (4) Amylase

Last Answer : Amylase

The enzyme that coagulates milk into curd is (1) Rennin (2) Pepsin (3) Resin (4) Citrate

Description : The enzyme that coagulates milk into curd is (1) Rennin (2) Pepsin (3) Resin (4) Citrate

Last Answer : Rennin

The enzyme that is present in the saliva of man is (1) Pepsin (2) Renin (3) Amylase (4) Trypsin

Description : The enzyme that is present in the saliva of man is (1) Pepsin (2) Renin (3) Amylase (4) Trypsin

Last Answer : Amylase

Which one of the following is not a digestive enzyme ? (1) Pepsin (2) Renin (3) Insulin (4) Amylopsin

Description : Which one of the following is not a digestive enzyme ? (1) Pepsin (2) Renin (3) Insulin (4) Amylopsin

Last Answer : Insulin

Consider a program that consists of 8 pages (from 0 to 7) and we have 4 page frames in the physical memory for the pages. The page reference string is : 1 2 3 2 5 6 3 4 6 3 7 3 1 5 3 6 3 4 2 4 3 4 5 1 The number of page faults in LRU and optimal page replacement algorithms are respectively (without including initial page faults to fill available page frames with pages): (A) 9 and 6 (B) 10 and 7 (C) 9 and 7 (D) 10 and 6

Description : Consider a program that consists of 8 pages (from 0 to 7) and we have 4 page frames in the physical memory for the pages. The page reference string is :  1 2 3 2 5 6 3 4 6 3 7 3 1 5 3 6 3 4 2 4 3 4 5 ... to fill available page frames with pages): (A) 9 and 6 (B) 10 and 7 (C) 9 and 7 (D) 10 and 6

Last Answer : (B) 10 and 7

The pH optima for lactase is (A) 1.0-2.0 (B) 5.4–6.0 (C) 5.0–7.0 (D) 5.8–6.2

Description : The pH optima for lactase is (A) 1.0-2.0 (B) 5.4–6.0 (C) 5.0–7.0 (D) 5.8–6.2

Last Answer : Answer : B

The pH optima for maltase is (A) 1.0–2.0 (B) 5.2–6.0 (C) 5.8–6.2 (D) 5.4–6.0

Description : The pH optima for maltase is (A) 1.0–2.0 (B) 5.2–6.0 (C) 5.8–6.2 (D) 5.4–6.0

Last Answer : Answer : C

The pH optima for sucrase is (A) 5.0–7.0 (B) 5.8–6.2 (C) 5.4–6.0 (D) 8.6

Description : The pH optima for sucrase is (A) 5.0–7.0 (B) 5.8–6.2 (C) 5.4–6.0 (D) 8.6

Last Answer : Answer : A

The pH optima for salivary analyse is (A) 6.6–6.8 (B) 2.0–7.5 (C) 7.9 (D) 8.6

Description : The pH optima for salivary analyse is (A) 6.6–6.8 (B) 2.0–7.5 (C) 7.9 (D) 8.6

Last Answer : Answer : A

The Michaelis constant, Km is (A) Numerically equal to ½ Vmax (B) Dependent on the enzyme concentration (C) Independent of pH (D) Numerically equal to the substrate concentration that gives half maximal velocity

Description : The Michaelis constant, Km is (A) Numerically equal to ½ Vmax (B) Dependent on the enzyme concentration (C) Independent of pH (D) Numerically equal to the substrate concentration that gives half maximal velocity

Last Answer : Answer : D

Enzymes activity is controlled by (A) pH of the solution (B) Temperature (C) Concentration of the enzyme (D) Concentration of the substrate (E) All of these

Description : Enzymes activity is controlled by (A) pH of the solution (B) Temperature (C) Concentration of the enzyme (D) Concentration of the substrate (E) All of these

Last Answer : Answer : C

Velocity maximum for an enzyme at half the substrate concentration gives (A) The molecular weight of the enzyme (B) Km value (C) Isoelectric pH (D) Pk value

Description : Velocity maximum for an enzyme at half the substrate concentration gives (A) The molecular weight of the enzyme (B) Km value (C) Isoelectric pH (D) Pk value

Last Answer : Answer : B

The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases

Description : The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases

Last Answer : Answer : B

Maximum enzyme activity is observed at (A) Acidic pH (B) Neutral pH (C) Basic pH (D) Optimum pH

Description : Maximum enzyme activity is observed at (A) Acidic pH (B) Neutral pH (C) Basic pH (D) Optimum pH

Last Answer : Answer : D

In enzyme assays, all the following are kept constant except (A) Substrate concentration (B) Enzyme concentration (C) pH (D) Temperature

Description : In enzyme assays, all the following are kept constant except (A) Substrate concentration (B) Enzyme concentration (C) pH (D) Temperature

Last Answer : Answer : B

Vmax of an enzyme may be affected by (A) pH (B) Temperature (C) Non-competitive inhibitors (D) All of these

Description : Vmax of an enzyme may be affected by (A) pH (B) Temperature (C) Non-competitive inhibitors (D) All of these

Last Answer : Answer : D

If all the enzymes, intermediates and cofactors of the citric acid cycle as well as an excess of the starting substrate acetylCoA are present and functional in an organelle free solution at the appropriate pH, which of the following factors of the citric acid cycle would prove to be rate limiting? (A) Molecular oxygen (B) Half life of enzyme (C) Turnover of intermediates (D) Reduction of cofactors

Description : If all the enzymes, intermediates and cofactors of the citric acid cycle as well as an excess of the starting substrate acetylCoA are present and functional in an organelle free solution at the appropriate ... oxygen (B) Half life of enzyme (C) Turnover of intermediates (D) Reduction of cofactors

Last Answer : Answer : D

Factors affecting enzyme activity: (A) Concentration (B) pH (C) Temperature (D) All of these

Description : Factors affecting enzyme activity: (A) Concentration (B) pH (C) Temperature (D) All of these

Last Answer : Answer : D

The pH at which an enzyme has maximum activity is known as (A) Isoelectric pH (B) Optimum pH (C) Low pH (D) High pH

Description : The pH at which an enzyme has maximum activity is known as (A) Isoelectric pH (B) Optimum pH (C) Low pH (D) High pH

Last Answer : Answer : B

What is the effect of pH on the activity of an enzyme?

Description : What is the effect of pH on the activity of an enzyme?

Last Answer : Each enzyme has an optimum pH, on both sides of which the velocity will be drastically reduced. The graph will show a bell-shaped curve.

The optimum pH of pancreatic lipase is (A) 2.0 (B) 4.0 (C) 6.0 (D) 8.0

Description : The optimum pH of pancreatic lipase is (A) 2.0 (B) 4.0 (C) 6.0 (D) 8.0

Last Answer : Answer : C

The pH optima of gastric lipase is (A) 3.0–6.0 (B) 1.0–2.0 (C) 8.0 (D) 8.6

Description : The pH optima of gastric lipase is (A) 3.0–6.0 (B) 1.0–2.0 (C) 8.0 (D) 8.6

Last Answer : Answer : A