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‘{d) none of the above., , 1”. The alveolar epithelium in the lung is, (a) non-ciliated columnar, (b) non-ciliated squamous, , , , {c} ciliated columnar 28,, (d) ciliated squamous. (198), BD Marsport of Gases, @ WUentify the wrong statement with reference to (c) has a lower, transport of oxygen adult, {a} Binding of oxygen with haemoglobin is mainly (d) its affinity for oxygen is the same as that of an, related to partial pressure of O, : adult. Sees, (b) Partial pressure of CO, can interfere with O, 29. The majority of carbon dioxide produced, binding with haemoglobin - body cells is transported to the lungs as by our, (¢) Higher H* conc. in alveoli favours the formation (a) attached to haemoglobin >, of oxyhaemoglobin (b) dissolved in the blood, (d) Low pCO, in alveoli favours the formation of (c) as bicarbonates, ! oxyhaemoglobin (NEET 2020) (4) as carbonates. (2006),, 3B. Reduction in pH of blood will *, ea on me a vai =, finity of haemo; reset 7a, (a) —— the affinity of haemoglobin with c) viteutin (a) eee (io, (b) release bicarbonate ions by the liver 31. How the transport of O, and CO, by blood happens?, (c) reduce the rate of heartheat (a) With the help of WBCs and blood serum, fd) reduce the blood supply to the br (b) With the help of platelets and corpuscles, ) reduce the bl pply to the a (€) With the help of ek, , ry (d) With the help of RBCs and WBCs (1996), Approximately seventy percent of carbon dioxide 39. ay high altitude, the RBCs in the human blood will, absorbed by the blood will be transported to the (a) increase in number (b) decrease in number, fungs (c) increase in size (d) decrease in size, (1995), , (a) as bicarbonate ions 33. Although much CO, is carried in blood, yet blood, , 1) in the form of dissolved gas molecules, , 12 by binding to RC ae Se aa through the tissues |, , te id) a5 carbamino haemoglobin. (2014) andismot allowed to a0 lat i, , red Proportion of oxygen remains —,, > (b) in CO, waar blood butlers play an 2, , luman blood even alte take by the body important ], tissues. This ©, one Ot (c) CO, is absorbed by the leucocytes, , + acts as a reserve during muscular exercise (d) cmermeae oar oan, Taises the pCO, of blood to 75. mm of Hg is neutral , ,, , ), (6) oe to keep oxyhaemoglobin saturation at 44 ‘The carbon dioxide is transported via blood to lungs, , \ : mostly, ‘ (4) helps in releasing more O, to the be er [ 4 se, TM carbon dioxide (CO,) released from body) ., , into the blood is present as " a, ate in blood plasma and RBCs J ee ee 4

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xypeptidase, __ {d) Amylase, Peptidase, Trypsinogen, Rennin, , (NEET 2017) |, 35. Inthe stomach, gastric acid is secreted by the, (a) peptic cells, (b) acidic cells, {c) gastrin secreting cells, (4) parietal cells, (NEET-I 2016), , 36. The enzyme that is not present in succus entericus is, (a) nucleosidase (b) lipase, {c) maltase (d) nuclease,, , 37. Gastric juice of infants contains, {a) pepsinogen, lipase, rennin, (b) amylase, rennin, pepsinogen, {c) maltase, pepsinogen, rennin, {d) nuclease, pepsinogen, lipase, 38. Which of the following statements is not correct?, fa) Oxyntic cells are present in the mucosa of, stomach and secrete HC], (>) Acini are present in the pancreas and secrete, a 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. (2015 Cancelled), , 3%. The initial step in the digestion of milk in humans is, , (2015), , (2015 Cancelled), , carried out by, (a) lipase (b) trypsin, {¢) rennin (d) pepsin (2014), , . A healthy person cats the following diet-5 gm raw, sugar, 4 gm albumin, 10 gm pure buffalo ghee, adultrated with 2 gm vegetable ghee (hydrogenated, Vegetable oil) and 5 gm lignin. How many calories, , he is likely to pet?, (a) 126 (b) 164, (112 (d) 144, , (Karnataka NEPY 2013), , a. Whidi enzymes are likely to act on the baked, Potatoes eaten by 4 man, starting from the mouth, 4nd as it moves down the alimentary canal?, , (8) Pancreatic amylase Salivary amylase > Lipases, {b) Disaccharidase like maltase —» Lipases —>, , a, , 42. If for some reason our, , , , 43., , 44., , 45., , 46,, , functional, this will adversely, fa) prodestion of dumanscinaas, (b) secretion of sebum from sebaceous glands, (c)_ maturation of sperms _, (d) smooth movement of food down the intestine., (2010), 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 proteases and peptones., (Mains 2010) ’, , Which one of the following pairs of! food components, in humans reaches the stomach totally undigested ?, (a) Starch and fat (b) Fat and cellulose, (c} Starch and cellulose (d) Protein and starch, (2009), Which one of the following is the correct matehing, of the site of action on the given substrate, the, enzyme acting upon it and the end product?, , (a) Small intestine : Proteins —™"_, Amino, acids, , , , (b) Stomach : Fats —U&*_, Micelles, (c}) Duodenum > Triglycerides, 'oP" _y Monoglycerides, (d) Small intestine : Starch “““"™*_, Disaccharide, (maltose), (2008), , 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 Urypsin., (c) Gastric juice will be deficient in chymosin,, (d) Gastric juice will be deficient so

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8 | fats (d) all of these., ‘are produced in stomach., ata pH lower than 7., Parle “These all are proteolytic enzymes., 8 ‘Coowe the correct enzyme - substrate pair, = een, ar es nite Lecter, , f ats) Rennin - Casein, : (4) Protein - Amylase, , , , f (a) It inhibits the Secretion of gastric juice., , 7 (bj It stimulates the secretion of digestive Juices in, i oI the stomach., , | é At stimulates the flow of pancreatic juice., , i At regulates the flow, , a. 54. Which of the following, , is correc}, , scan be digested by pancreatic, , Kees treme te compound which remain, , (b) carbohydrates, , (1994) 63., , 1 pairing of site of, i » action and substrate of rennin?, r Mouth - Starch, , , , (a) cardiac part of stomach, (6) pyloric part of stomach, {c) duodenum, , (d) fundic part of stomach., , 59. Emulsification of fat is carried out by, (a) bile pigments, (b) bile salts, (c) HCl, (d) pancreatic juice., , , , , , , , , , , , , , , , , 60. Release of Pancreatic juice is stimulated by, (a) enterokinase (b) chole, , (c) trypsinogen (d) secretin,, , =, , (1997) | BED Absorption of Digested Products, } common among amylase, rennin and, , 61. Match the items given in, , column I and choose the ¢, Column I, , A. Rennin, B. Enterokinase, C. Oxyntic cells, D, Fructose, (a) A-iii, B-iv, C-ii, D i, (b) A-iv, B-iii, ¢ i, D-ii, {c) A-iv, B-iii, C-ii, Dj, (d) A-ii, B-iv, C4 D-ii, , column I with those jg, ‘Orrect option,, , Column i, (i) Vitamin B,,, (it) Facilitated transport, (iii) Milk proteins, (iv) Trypsinogen, , (Odisha NEET M3), , » Fructose is absorbed into the blood throug, , tmucosa cells of intestine by the process called, (a) active transport, , (b) facilitated transport ", (c) simple diffusion, , (d) co transport mechanism ane, , Select the cor Fect match of the digested produ, in humans given in column I with their, Site and mechanism in column IL, , Column | Columa II ;, , (a) Glycerol, fatty acids — Duodenum, move q, as chylomicrons, , (b) Cholesterol, Maltose Lange intestine,, active absorption, , , , , , , (©) Glycine, glucose Small intestine,, a active absorption »,, (d) Fructose, Na* Small intestine, —