Description : Besides the liver which is the other adnexal gland of the digestive system that releases substances in the duodenum participating in extracellular digestion?
Last Answer : The other adnexal gland of the digestive system is the pancreas. This organ makes digestive enzymes that digest proteins (proteases), lipids (lipases) and carbohydrates (pancreatic amylases). ... and deoxyribonuclease are also secreted by the pancreas. Digestion System - Image Diversity: pancreas
Description : Enzyme responsible for the digestion of starch in food of main is Present in (e) Salivary and gastric secretion. (b) Salivary and pancreatic secretion (c) Gastric and pancreatic secretion (d) Gastric and duodenal secretion
Last Answer : (b) Salivary and pancreatic secretion
Description : Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in (A) Blood (B) Saliva (C) Intestine (D) Gland
Last Answer : (B) Saliva
Description : A digestive secretion that does not contain any digestive enzyme is (A) Saliva (B) Gastric juice (C) Pancreatic juice (D) Bile
Last Answer : Answer : D
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 : 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.
Description : Fibrinolytic therapy is based on activation of plasminogen, the inactive proteolytic enzyme of plasma that binds to fibrin during the formation of thrombosis. Activation of plasminogen to plasmin results ... TPA all exceed 30 minutes d. Streptokinase is significantly cheaper than urokinase or TPA
Last Answer : Answer: a, b, d Streptokinase is a bacterial protein produced by group C b-hemolytic streptococci. It is therefore antigenic in humans and can be associated with allergic reaction in ... one agent over the other. Streptokinase however, is markedly less expensive than either urokinase or TPA
Description : The digestive system, also known as systema digestorium , or gastrointestinal system, is composed of the digestive tube organs plus the digestive adnexal glands. The digestive tube is composed of mouth ... (caecum, colon, rectum) and anus. Digestion System - Image Diversity: human digestive system
Last Answer : What are peristaltic movements? What is their role in human digestion?
Description : Main function of an enzyme is to A- increase the activation energy B- decrease the activation energy C- maintain constant activation energy D- .none of these
Last Answer : decrease the activation energy
Description : The releasing of digestive secretions is controlled by hormones. What are the hormones that participate in this regulation?
Last Answer : The hormones that participate in the regulation of digestion are gastrin, secretin, cholecystokin and enterogastrone.
Description : How does the pancreatic juice participate in the digestion of proteins? What are the involved enzymes?
Last Answer : The pancreas secretes trypsinogen that, undergoing action of the enzyme enterokinase secreted by the duodenum, is transformed into trypsin. Trypsin in its turn catalyzes the activation of pancreatic ... activated by trypsin) helped by the enzyme aminopeptidase made in the intestinal mucous membrane.
Description : The reactions of the extracellular digestion are hydrolysis reactions, i.e., breaking of molecules with the help of water. The enzymes that participate in digestion are hydrolytic enzymes.
Last Answer : Which organs of the body are part of the human digestive system?
Description : Draw a labelled diagram of the human digestive system. With the help of this diagram, describe the process of digestion of food in man (humans). -Science
Last Answer : Digestion of food in human beings: Digestion of food begins in the mouth. The mouth cavity contains teeth, tongue and salivary glands. The teeth cut the food into small pieces, chew ... , proteins and fats. The walls of ileum secrete succus entericus which completes the digestion process.
Description : (a) Draw a diagram to show the nutrition in Amoeba and label the parts used for this purpose. Mention any other purpose served by this part other than nutrition. (b) Name the glands associated ... mention their role. (c) How is required pH maintained in the stomach and small intestine? -Biology
Last Answer : Answer.(a) Pseudopodia serves the purpose of locomotion apart from nutrition. (b) The salivary gland is associated with digestion of starch in human digestive tract. It secretes saliva which contains ... juice from liver makes the food alkaline in small intestine for the pancreatic enzymes to act.
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 : By generally dividing food into carbohydrates, fats and proteins and considering the digestive process until the pylorus (exit of stomach), which of these mentioned types of food have already undergone chemical digestion?
Last Answer : Until the exit of the stomach, carbohydrates, in the mouth, and proteins, in the stomach, have already undergone chemical breaking by digestive enzymes. Carbohydrates have suffered action of the salivary ... of the gastric juice. Fats, until reaching the duodenum, do not undergo chemical digestion.
Description : From the internal surface to the external surface, the digestive tube wall is made of mucosa (epithelial tissue responsible for the intestinal absorption), submucosa (connective tissue beneath the ... within the abdominal cavity. Digestion System - Image Diversity: histology of the digestive tube
Last Answer : What is the location of the salivary glands in humans?
Description : Peristalsis is the process of synchronized contractions of the muscular wall of the digestive tube. Peristaltic movements may occur from the esophagus until and including the bowels. The ... and megaesophagus (enlargement of the esophagus). Digestion System - Image Diversity: peristaltic movements
Last Answer : From the lumen to the external surface what are the tissues that form the digestive tube wall?
Description : Mechanical digestion is the fragmentation of food aided by specialized physical structures, such as teeth, previous to extracellullar digestion. The mechanical fragmentation of food helps digestive ... there are mandibles and chewing muscles to triturate food previous to the chemical digestion.
Last Answer : Concerning extracellular digestion what is meant by chemical digestion?
Description : What is the difference between a complete digestive system and an incomplete digestive system? How are these types of digestive tubes associated or not to extracellular digestion?
Last Answer : Animals with an incomplete digestive system are those in which the digestive tube has only one opening (cnidarians, platyhelminthes). Animals with a complete digestive system are those ... . In animals with complete digestive systems extracellular digestion within the digestive tube predominates.
Description : How does digestion in beings of the phylum Annelida work and which type of digestive system do they have?
Last Answer : Digestion in beings of the phylum Annelida is extracellular. These animals have a complete digestive system, with mouth and anus. Image Diversity: earthworm digestive system
Description : What are the types of digestion and of digestive system of platyhelminthes?
Last Answer : Flatworms have incomplete digestive systems and they present extracellular and intracellular complementary digestions. Image Diversity: platyhelminth digestive system
Description : 3 Select the antiemetic that prevents activation of emetogenic afferents in the gut and their central relay in chemoreceptor trigger zone/nucleus tractus solitarious, but has no effect on gastric motility: A. Ondansetron B. Domperidone C. Metoclopramide D. Cisaprid
Last Answer : A. Ondansetron
Description : Activation of the following type of receptors present on myenteric neurones by metoclopramide is primarily responsible for enhanced acetylcholine release improving gastric motility: A. Muscarinic M1 B. Serotonergic 5-HT3 C. Serotonergic 5-HT4 D. Dopaminergic D2
Last Answer : C. Serotonergic 5-HT4
Description : Which of the following is least acceptable in the light of the modern concept of education? Options: A) The personal and social adjustment of the child is a responsibility of the school must ... directly involved in the methods and procedures by means of which these products are to be attained
Last Answer : B) Despite the importance of its other responsibilities, the school exists primarily for the purpose of developing the intellectual and the academic atmosphere
Description : Number of gastric caecae present in digestive system of insects C A. 3-5 B. 2-4 C. 2-6 D. 5-10
Last Answer : 2-6
Description : Which of the following is the function of enterogastrone? (a) It inhibits the secretion of gastric juice. (b) It stimulates the secretion of digestive juices in the stomach. (c) It stimulates the flow of pancreatic juice. (d) It regulates the flow of bile.
Last Answer : (a) It inhibits the secretion of gastric juice.
Description : Gastric pits are found in the mucosa of which digestive organ? A. stomach B. duodenum C. jejunum D. ileum
Last Answer : A. stomach
Description : Assertion: Gastrectomy can lead to iron-deficiency or anaemia. Reason: HCl of gastric juice converts `Fe^(3+)` into `Fe^(2+)` which makes iron absorba
Last Answer : Assertion: Gastrectomy can lead to iron-deficiency or anaemia. Reason: HCl of gastric juice converts `Fe^ ... `Fe^(2+)` which makes iron absorbabale.
Description : The Instrinisic Factor (HCl and mucoproteins) present in the gastric juice help in the absorption of (A) Vitamin B2 (B) Tocopherols (C) Folic acid (D) Vitmain B12
Description : Besides the pancreatic juice in the intestine there is the releasing of the enteric juice that contains digestive enzymes too. What are these enzymes and which type of molecule do each of these enzymes break?
Last Answer : The enteric juice is secreted by the small intestine mucosa. The enzymes of the enteric juice and their respective functions are described as follows: Enterokinase: enzyme that activates ... Enzymes that break nucleotides into its components (nitrogen-containing bases, phosphates and pentoses).
Description : The pH of gastric juice released during digestion is a) Less than seven b) More than seven c) Equal to seven d) Equal to zero
Last Answer : a) Less than seven
Description : Name the main organs of the human digestive system. Also name the associated glands. (b) How do carbohydrates, fats and proteins get digested in human beings -Science
Last Answer : (a) The various organs of the human digestive system are mouth, oesophagus, stomach, small intestine and large intestine. The glands associated with the human digestive system are salivary ... the intestinal juice completes the process of digestion of proteins thus converting it into amino acids.
Description : 1. Which what is nucessary for digestion of food ? 2. Why are the Fundamental Freedoms under Article 19 suspended during emergency? 3. Which type of isomerism is shown by diethyl ether and methyl ... largest number of sugar mills? 20. Where is the Shrine of Hazarat Nizamuddin Auliya is situated?
Last Answer : Answer : 1. Enzyme 2. War or external aggression 3. Metamerism 4. Narmada 5. Assaka 6. George Orwell 7. Debtors 8. Potassium 9. Myanmar 10. Nanda 11. Limited government 12. Conservation of ... Fourth 15. Khari Boli 16. Muttiah Muralitharan 17. Omnivore 18. President 19. Uttar Pradesh 20. Delhi
Description : The complement system consists of a series of serum proteins that exist in a quiescent or very low-level state of activation in the uninfected host. Which of the following ... certain complement components serve as chemoattractants to additional cellular components of the host defense mechanism
Last Answer : Answer: a, c, d Complement activation can occur through either classic or alternate (properdin) pathways, both of which eventuate in deposition of terminal complement pathway components on the ... and release of lysosomal enzymes that can directly damage certain target tissues, such as the lung
Description : Which of the following statements regarding the complement system are true? a. Complement activation yields products which are directly cytotoxic as well as products which act indirectly via activated ... and classical pathways converge proximal to generating the membrane attack complex (C5b-9)
Last Answer : Answer: a, d The complement system is composed of two different but linked sequences, the classic and alternative pathways. The pathways involve serum proteins that act to amplify the inflammatory-immune ... the C5 level proximal to generating the membrane attack complex (C5b-9) (Figure 6-3)
Description : Select the drug which directly inhibits HIV-reverse transcriptase without the need for intracellular activation by phosphorylation: A. Nelfinavir B. Nevirapine C. Stavudine D. Didanosine
Last Answer : B. Nevirapine
Description : Is President Obama secretly relieved the the House of Commons voted to not participate directly in military action against the Assad family?
Last Answer : I doubt that the negative House of commons vote will have a huge effect on what the US military response to the Assad regime will be.the US congress and whatever the US military intelligence agencies provide as evidence will carry much more weight as to what the US response will be,
Description : Name the nondigestive enzyme which helps in activation of trypsinogen
Last Answer : Name the nondigestive enzyme which helps in activation of trypsinogen
Description : Calcium is required for the activation of the enzyme: (A) Isocitrate dehydrogenase (B) Fumarase (C) Succinate thiokinase (D) ATPase
Description : An enzyme brings about (A) Decrease in reaction time (B) Increase in reaction time (C) Increase in activation energy (D) Reduction in activation energy
Description : An enzyme promotes a chemical reaction by (A) Lowering the energy of activation (B) Causing the release of heat which acts as a primer (C) Increasing molecular motion (D) Changing the free energy difference between substrate and product
Last Answer : Answer : A
Description : For the activation of long chain fatty acids the enzyme thiokinase requires the cofactor: (A) Mg++ (B) Ca++ (C) Mn++ (D) K+
Last Answer : Answer : B
Description : The best understood intracellular messenger is cyclic AMP (cAMP). Which of the following statement(s) concerning this intracellular messenger is/are correct? a. Intracellular cyclic AMP is constantly ... of adenylate cyclase d. cAMP is the only cyclic nucleotide active as an intracellular messenger
Last Answer : Answer: a, b The prototypic intracellular messenger is cAMP. To function as a mediator, the concentration of cAMP must change rapidly. In resting cells, cAMP is continuously being degraded by ... produce cGMP. Intracellular calcium ions also serve as second messengers in a large number of cells
Description : Methylxanthine drugs such as aminophylline cause which one of the following? (a) Vasoconstriction in many vascular beds (b) Decrease in the amount of cAMP in mast cells (c) Bronchodilation (d) Activation of the enzyme phosphodiesterase (e) Sedation
Last Answer : Ans: C
Description : Which one of the following is not a function of the liver? (1) Regulation of blood sugar (2) Enzyme activation (3) Detoxiation (4) Reproduction
Last Answer : (4) Reproduction Explanation: Liver is the body's largest internal organ. It has many functions in the body like it helps in protein synthesis and blood clotting, manufacturing triglycerides and cholesterol, glycogen synthesis, and bile production.
Last Answer : (4) Reproduction Explanation: Liver is the body’s largest internal organ. It has many functions in the body like it helps in protein synthesis and blood clotting, manufacturing triglycerides and cholesterol, glycogen synthesis, and bile production.
Description : What is the enzyme for this activation?
Last Answer : Thiokinase or fatty acyl CoA synthetase.
Description : Boron in green plants assists in (a) activation of enzymes (b) acting as enzyme co-factor (c) photosynthesis (d) sugar transport.
Last Answer : (d) sugar transport.