Free NEET Biology multiple-choice questions on Digestion and Absorption. Attempt each question and reveal the answer with a full explanation.
Which of the following guards the opening of hepatopancreatic duct into the duodenum ? Semilunar valve Ileo caecal valve Pyloric sphincter Sphincter of Oddi Which one of the following pairs of food compounds in humans reaches the stomach totally undigested - Starch and cellulose Protein and starch Starch and fat Fat and cellulose Which one of the following statement is true regarding digestion and absorption of food in humans : About 60% of starch is hydrolysed by salivary amylase in our mouth Oxyntic cells in our stomach secrete the proenzyme pepsinogen Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na + Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries Identify the correct statement with reference to human digestive system. Serosa is the innermost layer of the alimentary canal Ileum is a highly coiled part Vermiform appendix arises from duodenum Ileum opens into small intestine Which of the following terms describe human dentition? Pleurodont, Monophyodont, Homodont Thecodont, Diphyodont, Heterodont Thecodont, Diphyodont, Homodont Pleurodont, Diphyodont, Heterodont Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by (1) Sphincter of Oddi (2) Ileo-caecal valve (3) Gastro-oesophageal sphincter (4) Pyloric sphincter The 'Succus entericus' is the term used for the secretion of which of the following? Intestinal juice Gastric juice Pancreatic juice Bile juice The hepatic portal vein carries blood to the liver from which of the following organs? Intestine Kidneys Heart Lungs Which blood vessel carries blood from the intestine to the liver before it is delivered to the systemic circulation? Hepatic portal vein Hepatic artery Hepatic vein Renal vein Which cells of the gastric glands secrete 'Castle's Intrinsic Factor', which is essential for the absorption of Vitamin B 12 ? Oxyntic (Parietal) cells Peptic (Chief) cells Mucus neck cells G-cells Gastric Inhibitory Peptide (GIP), a hormone secreted by the intestinal mucosa, performs which of the following functions? Inhibits gastric secretion and motility Stimulates the secretion of HCl Stimulates the release of bile Increases the motility of the stomach In the gastric juice of infants, which proteolytic enzyme is found that helps in the digestion of milk proteins? Rennin Renin Pepsin Trypsin