Description : Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions ... amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
Last Answer : (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na
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.
Description : Zymogen cells of gastric gland secrete (a) Pepsinogen (b) Chymotrypsin (c) Pepsin (d) Trypsin
Last Answer : (a) Pepsinogen
Description : Which of the following converts inactive pepsinogen into active pepsin : (a) HCI (b) Mucous (c) Hormone (d) Enterokinase
Last Answer : (a) HCI
Description : The first line of host defense is the barrier presented to the external environment. Which of the following statement(s) is/are true concerning host barriers? a. Sebaceous glands secrete ... of the upper gastrointestinal tract d. Gut peristalsis serves to prevent microbial adherence and invasion
Last Answer : Answer: b, c, d The skin, mucus membranes, and epithelial layers of various organs of the body constitute effective physical barriers against microbial invasion. In certain portions of the ... very low pH within the stomach and gut peristalsis both serve to prevent microbial adherence and invasion
Description : The layer of cells that secrete enamel of tooth is (a) osteoblast (b) odontoblast (c) dentoblast (d) ameloblast.
Last Answer : (b) odontoblast
Description : What are the folds found in the mucous lining of the empty stomach? (1) Typhlosole (2) Areolae (3) Rugae (4) Villi
Last Answer : (3) Rugae Explanation: The inner layer of the stomach is full of wrinkles known as rugae (or gastric folds). Rugae both allow the stomach to stretch in order to accommodate large meals and help to grip and move food during digestion.
Description : What are the folds found in the mucous lining of the empty stomach ? (1) Typhlosole (2) Areolae (3) Rugae (4) Villi
Last Answer : Rugae
Description : The hormone that stimulates the stomach to secrete gastric juice is (a) enterokinase (b) enterogastrone (c) gastrin (d) renin
Last Answer : (c) gastrin
Description : Which of the following regions of the alimentary canal of rabbit does not secrete a digestive enzyme ? (a) Mouth (b) Oesophagus (c) Stomach (d) Duodenum
Last Answer : (b) Oesophagus
Description : Name the cells found in gastric glands which secrets the proenzyme pepsinogen
Last Answer : Name the cells found in gastric glands which secrets the proenzyme 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.
Description : Chronic Bronchitis is characterized by I. the distruction of central and peripheral portions of the acinus II. an increased number of mucous glands and goblet cells III. edema and inflammation of the bronchioles (a) only ... II are correct (d) II and III are correct (e) I, II and III are correct
Last Answer : Ans: C
Description : After digestion the next step is absorption done by cells of the mucous membrane of the intestine. For this task a large absorption surface is an advantage. How is it possible in the small internal space of the body of a pluricellular organism to present a large intestinal surface?
Last Answer : Evolution tried to solve this problem in two ways. The simplest is the long and tubular shape of the bowels (approximately eight meters in extension), making possible that numerous ... function of increasing the absorption surface too. Digestion System - Image Diversity: intestinal villi microvilli
Description : Which of the following gastric cells indirectly help in erythropoiesis? (a) Chief cells (b) Mucous cells (c) Goblet cells (d) Parietal cells
Last Answer : (d) Parietal cells
Description : Which of the following statements is the characteristics of human cornea? (a) It is secreted by conjuctiva and glandular layer. (b) It is a lacrimal gland which secrete tears. (c) Blood circulation is absent in cornea. (d) In old age it becomes the cause of cataract.
Last Answer : (c) Blood circulation is absent in cornea.
Description : Liver cells secrete -
Last Answer : Liver cells secrete - A. amylopsin B. trypsin C. lipase D. bile and no enzyme
Description : One of the following cells secrete hormone
Last Answer : One of the following cells secrete hormone A. Cells of Leydig B. Cells of Sertoli C ... `rarr` Secondary spermatocytes D. Secondary spermatocytes.
Description : Sertoli cells secrete a hormone
Last Answer : Sertoli cells secrete a hormone A. Gonadotropin B. Testerone C. Relaxin D. Inhibin.
Description : Tubular cells secrete _____ and _____
Last Answer : Tubular cells secrete _____ and _____
Description : Mast cells secrete :-
Last Answer : Mast cells secrete :- A. Hippurin B. Myoglobin C. Histamine D. Hemoglobin
Description : Why Cells that carry on digestion within the cell do not partly digest themselves because they secrete their digestive enzymes into membrane-enclosed?
Last Answer : Feel Free to Answer
Description : What the nervous tissues cells secrete collagen?
Last Answer : What is the answer ?
Description : β-cells of islet of langerhans of the pancreas secrete (A) Insulin (B) Glucagon (C) Somatostatin (D) Pancreatic polypeptide
Last Answer : Answer : A
Description : α Cells of Islets of Langerhans secrete (A) Insulin (B) Glucagon (C) Somatostatin (D) Cholecystokinin
Last Answer : Answer : B
Description : The following statement(s) is/are true concerning cellular defense mechanisms. a. Macrophages function solely as antigen processing cells in the initial reaction to exposure to an antigen b. Macrophages ... in only small numbers within the tissue and enter an area of infection through diapedesis
Last Answer : Answer: b, d A wide variety of cell types serve to provide host defense at several levels. Macrophages act as the initial antigen processing cell that serves to ... through diapedesis after chemotactic stimuli are excluded by macrophages, bacterial breakdown products, and complement activation
Description : Which of the following is/are true concerning wound fibroblasts? A. Fibroblasts synthesize and secrete collagen molecules. B. Wound fibroblasts are derived from blood-borne precursor cells. C. ... clot can act as a physical barrier to fibroblast penetration, which delays normal wound healing.
Last Answer : Answer: ACD DISCUSSION: Fibroblasts appear in the wound on about the third day of healing and begin to synthesize and secrete collagen molecules. Wound fibroblasts arrive from cells surrounding ... enzymes, and large amounts of fibrin and blood clot prevent fibroblasts from entering the wound
Description : Which of the following cells secrete insulin? (1) Alpha cells (2) Delta cells (3) Nerve cells (4) Beta cells
Last Answer : (4) Beta cells Explanation: Insulin is a hormone that is exclusively produced by pancreatic beta cells. Beta cells are located in the pancreas in clusters known as the islets of ... appropriately stimulated, insulin is secreted from the cell by exocytosis and diffuses into islet capillary blood.
Description : Sertoli cells are found in (a) ovaries and secrete progesterone (b) adrenal cortex and secrete adrenaline (c) seminiferous tubules and provide nutrition to germ cells (d) pancreas and secrete cholecystokinin.
Last Answer : (c) seminiferous tubules and provide nutrition to germ cells
Description : Which cells of ‘Crypts of Lieberkuhn’ secrete antibacterial lysozyme? (a) Paneth cells (b) Zymogen cells (c) Kupffer cells (d) Argentaffin cells
Last Answer : (a) Paneth cells
Description : Mast cells secrete (a) haemoglobin (b) hippurin (c) myoglobin (d) histamine
Last Answer : (d) histamine.
Description : Which cells of "Crypts of Lieberkuhn" secrete antibacterial lysozyme ? (1) Paneth cells (2) Zymogen cells (3) Kupffer cells (4) Argentaffin cells
Last Answer : (1) Paneth cells
Description : Zymogen cell and chief cells secrete (a) HCI (b) Mucus (c) Pepsi (d) Trypsin
Last Answer : (c) Pepsi
Last Answer : Beta cells
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.
Description : Pepsinogen is secreted by
Last Answer : Pepsinogen is secreted by A. chief-cells B. Oxyntic cells C. mast cells D. parietal cells
Last Answer : Pepsinogen is secreted by A. argentaffin cells B. Goblet cells of ileum stimulates secretion of succus entricus C. chief cells D. parietal cells
Description : Just as hydrochloric acid is to pepsinogen, so is
Last Answer : Just as hydrochloric acid is to pepsinogen, so is A. haemoglobin to oxygen B. enterokinase to typsinogen C. bile juice to fat D. glucagon to glycogen
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
Description : Name the hormone which increases the secretion of pepsinogen and hydrochloric acid from gastric glands.
Last Answer : Name the hormone which increases the secretion of pepsinogen and hydrochloric acid from gastric glands.
Description : An enzyme in saliva which hydrolyzes starch is (A) Pepsinogen (B) Chymotrysin (C) α-Amylase (D) Malate
Last Answer : Answer : C
Description : Conversion of pepsinogen to pepsin is (A) Intra molecular rearrangement (B) Breaking of hydrogen bonds (C) Covalent modification (D) Polymerisation
Description : Whcih of the following is a proenzyme? (A) Carboxypeptidase (B) Aminopeptidase (C) Chymotrypsin (D) Pepsinogen ENZYMES 159
Last Answer : Answer : D
Description : Proenzymes: (A) Chymotrysinogen (B) Pepsinogen (C) Both (A) and (B) (D) None of these
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
Description : Pepsinogen is converted to active pepsin by (A) HCl (B) Bile salts (C) Ca++ (D) Enterokinase
Description : Gastric juice of infants contains (a) pepsinogen, lipase, rennin (b) amylase, rennin, pepsinogen (c) maltase, pepsinogen, rennin (d) nuclease, pepsinogen, lipase
Last Answer : (a) pepsinogen, lipase, rennin
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