Pepsinogen is converted to active pepsin by (A) HCl (B) Bile salts (C) Ca++ (D) Enterokinase

Pepsinogen is converted to active pepsin by (A) HCl (B) Bile salts (C) Ca++ (D) Enterokinase
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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.

Trypsinogen is converted to active trypsin by (A) Enterokinase (B) Bile salts (C) HCl (D) Mg++

Description : Trypsinogen is converted to active trypsin by (A) Enterokinase (B) Bile salts (C) HCl (D) Mg++

Last Answer : Answer : A

Which of the following converts inactive pepsinogen into active pepsin : (a) HCI (b) Mucous (c) Hormone (d) Enterokinase

Description : Which of the following converts inactive pepsinogen into active pepsin : (a) HCI (b) Mucous (c) Hormone (d) Enterokinase

Last Answer : (a) HCI

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

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

Trypsinogen is converted into active Trypsin by : (a) Mucus (b) Bile juice (c) Enterokinase (d) Hormone

Description : Trypsinogen is converted into active Trypsin by : (a) Mucus (b) Bile juice (c) Enterokinase (d) Hormone

Last Answer : (c) Enterokinase

Bile salts make emulsification with fat for the action of (A) Amylose (B) Lipase (C) Pepsin (D) Trypsin

Description : Bile salts make emulsification with fat for the action of (A) Amylose (B) Lipase (C) Pepsin (D) Trypsin

Last Answer : Answer : B

What convert inactive pepsinogen into active pepsin?

Description : What convert inactive pepsinogen into active pepsin?

Last Answer : Hydrochloric Acid (HCL) converts inactive pepsinogen into an active pepsin. HCL also kills harmful pathogens or particles in our food when it reaches the stomach through the gastrointestinal duct.

The zymogen from trypsinogen of pancreatic juice is converted to active trypsin by (A) Peisin (B) Enterocrinin (C) Enterokinase (D) Rennin

Description : The zymogen from trypsinogen of pancreatic juice is converted to active trypsin by (A) Peisin (B) Enterocrinin (C) Enterokinase (D) Rennin

Last Answer : Answer : C

Conversion of pepsinogen to pepsin is (A) Intra molecular rearrangement (B) Breaking of hydrogen bonds (C) Covalent modification (D) Polymerisation

Description : Conversion of pepsinogen to pepsin is (A) Intra molecular rearrangement (B) Breaking of hydrogen bonds (C) Covalent modification (D) Polymerisation

Last Answer : Answer : C

Emulsification of fat is carried out by (a) bile pigments (b) bile salts (c) HCl (d) pancreatic juice

Description : Emulsification of fat is carried out by (a) bile pigments (b) bile salts (c) HCl (d) pancreatic juice

Last Answer : b) bile salts

Emulsification of fat is brought about by (a) Bile pigments (b) Bile salts (c) Pancreatic juice (d) HCl

Description : Emulsification of fat is brought about by (a) Bile pigments (b) Bile salts (c) Pancreatic juice (d) HCl

Last Answer : (b) Bile salts

Oxyntic cell is meant for the secretion of (1) Pepsin (2) Enterokinase (3) Hydrochloric acid (4) Lactic acid

Description : Oxyntic cell is meant for the secretion of (1) Pepsin (2) Enterokinase (3) Hydrochloric acid (4) Lactic acid

Last Answer : (3) Hydrochloric acid Explanation: Parietal cells (also known as oxyntic cells), are the epithelial cells that secrete hydrochloric acid (HCL) and intrinsic factor. These cells are located in ... an extensive secretory network from which the HCL is secreted by active transport into the stomach.

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.

Oxyntic cell is meant for the secretion of (1) Pepsin (2) Enterokinase (3) Hydrochloric acid (4) Lactic acid

Description : Oxyntic cell is meant for the secretion of (1) Pepsin (2) Enterokinase (3) Hydrochloric acid (4) Lactic acid

Last Answer : Hydrochloric acid 

Which of the following set is required for digestion of protein (a) Rennin, lipase, pepsinogen (b) Rennin, pepsin, trypsin (c) Pepsin, trypsin, erepsin (d) Trypsin, chymotrypsin, rennin

Description : Which of the following set is required for digestion of protein (a) Rennin, lipase, pepsinogen (b) Rennin, pepsin, trypsin (c) Pepsin, trypsin, erepsin (d) Trypsin, chymotrypsin, rennin

Last Answer : (c) Pepsin, trypsin, erepsin

Zymogen cells of gastric gland secrete (a) Pepsinogen (b) Chymotrypsin (c) Pepsin (d) Trypsin

Description : Zymogen cells of gastric gland secrete (a) Pepsinogen (b) Chymotrypsin (c) Pepsin (d) Trypsin

Last Answer : (a) Pepsinogen

The milk protein in the stomach in an adult is digested by (A) Pepsin (B) Rennin (C) HCl (D) Chymotrypsinogen

Description : The milk protein in the stomach in an adult is digested by (A) Pepsin (B) Rennin (C) HCl (D) Chymotrypsinogen

Last Answer : Answer : A

Achylia gastrica is said to be when absence of (A) Pepsin only (B) Both pepsin and HCl (C) HCl only (D) All of these

Description : Achylia gastrica is said to be when absence of (A) Pepsin only (B) Both pepsin and HCl (C) HCl only (D) All of these

Last Answer : Answer : B

Which of the following statements is not correct? (a) Oxyntic cells are present in the mucosa of stomach and secrete HCl. (b) Acini are present in the pancreas and secrete carboxypeptidase. (c) Brunner’s glands are present in the submucosa of stomach and secrete pepsinogen. (d) Goblet cells are present in the mucosa of intestine and secrete mucus

Description : Which of the following statements is not correct? (a) Oxyntic cells are present in the mucosa of stomach and secrete HCl. (b) Acini are present in the pancreas and secrete carboxypeptidase. (c ... and secrete pepsinogen. (d) Goblet cells are present in the mucosa of intestine and secrete mucus

Last Answer : (c) Brunner’s glands are present in the submucosa of stomach and secrete pepsinogen.

Gastric lipae is activated in the presence of (A) Bile salts (B) Cu++ (C) K+ (D) Na+

Description : Gastric lipae is activated in the presence of (A) Bile salts (B) Cu++ (C) K+ (D) Na+

Last Answer : Answer : A

The pancreatic amylase activity is increased in the presence of (A) Hydrochloric acid (B) Bile salts (C) Thiocyanate ions (D) Calcium ions

Description : The pancreatic amylase activity is increased in the presence of (A) Hydrochloric acid (B) Bile salts (C) Thiocyanate ions (D) Calcium ions

Last Answer : Answer : B

Conversion of β-carotene into retinal requires the presence of (A) β-Carotene dioxygenase (B) Bile salts (C) Molecular oxygen (D) All of these

Description : Conversion of β-carotene into retinal requires the presence of (A) β-Carotene dioxygenase (B) Bile salts (C) Molecular oxygen (D) All of these

Last Answer : Answer : D

Vitamin C is required for the synthesis of (A) Bile acids from cholesterol (B) Bile salts from bile acids (C) Vitamin D from cholesterol (D) All of these

Description : Vitamin C is required for the synthesis of (A) Bile acids from cholesterol (B) Bile salts from bile acids (C) Vitamin D from cholesterol (D) All of these

Last Answer : Answer : A

Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Description : Cholesterol, bile salts, vitamin D and sex hormones are (A) Mucolipids (B) Glycolipids (C) Phospholipids (D) Isoprenoid lipids

Last Answer : Answer : D

All the following statements about obstructive jaundice are true except (A) Prothrombin time may be prolonged due to impaired absorption of vitamin K (B) Serum alkaline phosphatase may be raised due to increased release of the enzyme from liver cells (C) Bile salts may enter systemic circulation due to biliary obstruction (D) There is no defect in conjugation of bilirubin

Description : All the following statements about obstructive jaundice are true except (A) Prothrombin time may be prolonged due to impaired absorption of vitamin K (B) Serum alkaline phosphatase may be raised ... systemic circulation due to biliary obstruction (D) There is no defect in conjugation of bilirubin

Last Answer : Answer : B

All the following statements about obstructive jaundice are true except (A) Conjugated bilirubin in serum is normal (B) Total bilirubin in serum is raised (C) Bile salts are present in urine (D) Serum alkaline phosphatase is raised

Description : All the following statements about obstructive jaundice are true except (A) Conjugated bilirubin in serum is normal (B) Total bilirubin in serum is raised (C) Bile salts are present in urine (D) Serum alkaline phosphatase is raised

Last Answer : Answer : A

Pancreatic lipase requires for its activity: (A) Co-lipase (B) Bile salts (C) Phospholipids (D) All of these

Description : Pancreatic lipase requires for its activity: (A) Co-lipase (B) Bile salts (C) Phospholipids (D) All of these

Last Answer : Answer : D

The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

Description : The precursor of bile salts, sex hormones and vitamin D is (A) Diosgenin (B) Cholesterol (C) Campesterol (D) Ergosterol

Last Answer : Answer : B

Rothera test is not given by (A) β-hydroxy butyrate (B) bile salts (C) Glucose (D) None of these

Description : Rothera test is not given by (A) β-hydroxy butyrate (B) bile salts (C) Glucose (D) None of these

Last Answer : A

The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid

Description : The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid

Last Answer : A

How are bile salts formed?

Description : How are bile salts formed?

Last Answer : Bile acids conjugated with taurine or glycine.

What is enterohepatic circulation of bile salts?

Description : What is enterohepatic circulation of bile salts?

Last Answer : They are separately reabsorbed from the ileum and returned to the liver to be re-excreted again to gut.

What happens to the bile salts of micelle?

Description : What happens to the bile salts of micelle? 

Last Answer : The bile salts are left behind.

What is the chemical name of bile salts?

Description : What is the chemical name of bile salts?

Last Answer : Sodium glycocholate and sodium taurocholate.

How bile salts help in the absorption of dietary lipids?

Description : How bile salts help in the absorption of dietary lipids?

Last Answer : By emulsifying the lipids and producing micelles of lipids.

How many enzymes are active in given enzymes ? Trypsin, Chymotrypsinogen, Pro carboxypeptidase, Pepsinogen, Rennin

Description : How many enzymes are active in given enzymes ? Trypsin, Chymotrypsinogen, Pro carboxypeptidase, Pepsinogen, Rennin

Last Answer : How many enzymes are active in given enzymes ? Trypsin, Chymotrypsinogen, Pro carboxypeptidase, Pepsinogen, Rennin A. 1 B. 2 C. 3 D. 4

The unwanted amino acids abstracted from the tissues are either used up by the tissue or in the liver converted into (A) Ammonia (B) Urea (C) Ammonium salts (D) Uric acid

Description : The unwanted amino acids abstracted from the tissues are either used up by the tissue or in the liver converted into (A) Ammonia (B) Urea (C) Ammonium salts (D) Uric acid

Last Answer : Answer : B

Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. Bile salts are detergents, amphiphilic molecules, i.e., molecules with a polar water-soluble portion and a non-polar fat-soluble portion. This feature allows bile salts to enclose fats inside water-soluble micelles in a process called emulsification for them to be in contact with intestinal lipases, enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Last Answer : What is the adnexal organ of the digestive system in which bile is stored?

What are the structural and chemical reasons why bile salts don’t form typical micelles?

Description : What are the structural and chemical reasons why bile salts don’t form typical micelles?

Last Answer : Although bile salts possess a polar head group, the hydrocarbon tail usually contains polar hydroxyl groups. Therefore the rigid ring system gives a tightly packed, almost solid, nonpolar phase rather ... liquid one. However, like cholesterol, bile salts can form mixed micelles with phospholipids. 

Intestinal bacteria can grow in the presence of __________whereas nonintestinal bacteria are A.bile salts B.low concentration of various dyes C.sugars D.low levels of nitrogen

Description : Intestinal bacteria can grow in the presence of __________whereas  nonintestinal bacteria are A.bile salts B.low concentration of various dyes C.sugars D.low levels of nitrogen

Last Answer : A.bile salts

Select the hypocholesterolemic drug which interferes with intestinal absorption of bile salts and cholesterol, and secondarily increases cholesterol turnover in the liver: A. Gemfibrozil B. Cholestyramine C. Lovastatin D. Bezafibrate

Description : Select the hypocholesterolemic drug which interferes with intestinal absorption of bile salts and cholesterol, and secondarily increases cholesterol turnover in the liver: A. Gemfibrozil B. Cholestyramine C. Lovastatin D. Bezafibrate

Last Answer : B. Cholestyramine

The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid

Description : The surface tension in intestinal lumen between fat droplets and aqueous medium is decreased by (A) Bile Salts (B) Bile acids (C) Conc. H2SO4 (D) Acetic acid

Last Answer : (A) Bile Salts

Fat digestion is diffcult due to absence of (a) Bile salts (b) Bile pigments (c) Cholesterol (d) All

Description : Fat digestion is diffcult due to absence of (a) Bile salts (b) Bile pigments (c) Cholesterol (d) All

Last Answer : (a) Bile salts

More than 90% of bile salts are reabsorbed in (a) Duodenum (b) Ileum (c) Colon (d) None

Description : More than 90% of bile salts are reabsorbed in (a) Duodenum (b) Ileum (c) Colon (d) None

Last Answer : (b) Ileum

Bile salts in bile juice of man arc (a) 8.2% (b) 8.6% (c) 8.6% (d) .65%

Description : Bile salts in bile juice of man arc (a) 8.2% (b) 8.6% (c) 8.6% (d) .65%

Last Answer : (a) 8.2%

Yellow colour of bile is due to (a) Bili verdin (b) Bili rubin (c) Bile salts (d) None

Description : Yellow colour of bile is due to (a) Bili verdin (b) Bili rubin (c) Bile salts (d) None

Last Answer : (b) Bili rubin

Light brown colour of faeces is due to : (a) Bile pigments (b) Bile salts (e) Bacteria (d) None

Description : Light brown colour of faeces is due to : (a) Bile pigments (b) Bile salts (e) Bacteria (d) None

Last Answer : (a) Bile pigments

Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

Description : Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

Last Answer : It liberates nitrogen on treatment with ice-cold nitrous acid

Citrate is converted to isocitrate by aconitase which contains (A) Ca++ (B) Fe++ (C) Zn++ (D) Mg++

Description : Citrate is converted to isocitrate by aconitase which contains (A) Ca++ (B) Fe++ (C) Zn++ (D) Mg++

Last Answer : B