ion Q12) Match the following and choose the correct combination from the options given:

Column I	Column II
a. Ptyalin	Lipids
b. Pepsin	Starch
c. Steapsin	DNA
d. Nucleases	Proteins

ion Q13) Which one of the following statements about glycogen is correct:

ion Q14) The enzymes which are responsible for the digestion of starch in food of man is present in:

ion Q15) Read carefully the following statements: (i) Human liver is bilobed and weighs about 1.2 to 1.5kg. (ii) pH of gastric juice is 6.8 while the pH of saliva is 1. (iii) Saliva contains amylase, lysozyme and electrolytes. (iv) Each lobule of liver is guarded by sphincter of Oddi. (v) Digestion is initiated by ptyalin and it hydrolyses about 30% starch in oral cavity.

ion Q16) Which of the following statement is incorrect:

ionMore than one correct answerr Q17) Which one of the following is true regarding the digestion and absorption of food in humans?

ion Q18) Identify the correct matching of items given in the three columns:

Column I	Column II	Column III
Chymotripsin	a. Trypsinogen	(i) Small peptides
Carboxypeptidase	b. Nucleoside	(ii) DNA + RNA
Nucleosidase	c. Nucleotide	(iii) Large peptides
Nucleotidase	d. Proteins	(iv) Amino acids
Enterokinase	e. Large peptides	(v) Sugar + base
- -   - -	f. Starch	(vi) Trypsin
- - - -	- - - -	(vii) Nucleoside + Phosphates.

ion Q19) Read the following sentences and choose the correct option: (i) The wall of alimentary canal from oesophagus to rectum has four layers namely Serosa, muscularis, sub-mucosa and mucosa. (ii) Serosa is the outermost layer and is made up of thin mesothelium with some connective tissue. (iii) Muscularis is formed by smooth muscles usually arranged into an inner circular muscle and an outer longitudinal muscle. (iv) The sub-mucosal layer is formed of dense connective tissue containing nerves, blood and lymph vessels. (v) In duodenum the glands are present in the sub mucosa. (vi) The innermost layer lining the lumen of alimentary canal is mucosa.

ion Q20) Read the following statements regarding the digestive system and select the correct statement: Explanation is provided please clcik on

ion Q21) During the intake of food, what prevents the entry of food into the glottis?

ion Q22) The sphincter that regulates the opening of oesophagus into the stomach;

ion Q24) Which part of stomach contains the main gastric glands which secrete enzyme, HCl and mucous.

ion Q25) How does autonomic nervous system affect the secretion of digestive juices:

ion Q26) The enzyme called universal enzyme which is present in all organisms starting from Protozoans to mammals is:

ion Q27) Choose the wrong statement:

ion Q28) The process of digestion proceeds in this order:

ion Q29) Column I contains the name of the sphincter muscles of the alimentary canal and column II contains their locations. Match them properly and choose the correct answer:

Column I	Column II
a. Sphincter of ani internus	Opening of hepatopancreatic duct into duodenum
b. Cardiac sphincter	Between duodenum and posterior stomach
c. Sphincter of Oddi.	Guarding the terminal part of alimentary canal.
d. Illeocaecal sphincter	Between oesophagus and anterior stomach
e. Pyloric sphincter	Between small intestine and large intestine

ion Q33) Consider the following statements: (i) The longest part of the gastrointestinal tract is duodenum. (ii) Heart burn is due to regurgitation of acidic contents into oesophagus. (iii) Vermiform appendix is attached to the Caecum. (iv) Epiglottis prevents the entry of food into the trachea. (v) Trypsin catalyses the conversion of chymotripsinogen into Chymotripsin.

ion Q34) Find out the wrong statement:

ion Q35) Vermiform appendix, a vestigial part of the alimentary canal is situated:

ion Q36) Study the statements given: (i) Human dentition is thecodont, diphyodont and heterodont. (ii) Enamel is produced by ameloblast while dentine is produced by odontoblast. (iii) Frenulum connects tongue to the buccal cavity. (iv) The liver is bilobed and weighs 1.2 to 1.5kg. (v) Pancreas is both exocrine and endocrine.

ion Q37) Cholecystokinin is a secretion of:

ion Q38) Partial removal of liver is not harmful because:

ion Q40) Consider the following statements: (i) Sympathetic nervous system can decrease salivation. (ii) Oxyntic glands located in the fundus of stomach and it contributes 80% of stomach. (iii) Most parts of the gastrointestinal tract is lined with unicellular mucous glands. (iv) Defecation is a voluntary process only. (v) In addition to nervous signals gastrin, CCK, insulin and serotonin also affect peristalsis.

ion Q41) Liver, the largest gland is associated with several functions. Which one of the following is stated incorrectly:

ion Q43) Aggregates of lymphoid tissue present in the distal portion of small intestine are known as:

ion Q44) Surgical removal of gall bladder in human beings lead to:

ion Q45) When breast feeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year are likely to suffer from:

ion Q46) Continuous consumption of a diet rich food in butter, red meat and eggs for a long period may lead to:

ion Q47) Which of the following statements is not correct:

ion Q48) A person has decreased secretion of lactase enzyme. What would happen if he consumes more milk?

ion Q49) What will happen if all the bacteria of intestine died?

ion Q50) If we take food rich in lime juice, then:

ion Q51) Which of the following statements are correct regarding secretion of Oxyntic cells? (i) It denatures proteins and softens fibrous connective tissue in blood. (ii) It activates rennin. (iii) It had a role in the maturation of RBCs. (iv) It activates trypsin.

ion Q52) A person takes a large quantity of antacid. As a result, the activity of which of the following enzymes would be affected:

ion Q53) The enterochromaffin cells contain small granules which produce secretin hormone whose function is:

ion Q54) What will be the consequence if the portion marked as ‘A’ in the following diagram has been removed:

ion Q55) The length of alimentary canal is more in herbivorous animals than the carnivorous animals because:

ion Q56) Which one of the following is a fat soluble vitamin and its related deficiency disease:

ion Q57) In the gastro-intestinal tract, the Meissner’s plexus and the Auerbach’s plexus occur respectively in:

ion Q58) A doctor advises a person for taking more meat, butter, milk and eggs. The person is suffering from:

ion Q59) Sequence of food materials consumed during prolonged fasting is:

ion Q60) The structural and functional unit of liver containing hepatic cells arranged in the form of cords are called:

ion Q61) Find out the wrong statements: (i) Small amounts of monosaccharides like glucose, amino acids and some electrolytes like chloride are generally absorbed by simple diffusion. (ii) Absorption of water, simple sugars and alcohol, etc takes place in stomach. (iii) Large intestine is the principle organ for absorption of nutrients. (iv) Transport of water depends upon the osmotic gradient. (v) Bile activates lipases.

ion Q62) Which of the following is the correct matching of the site of action of the given substrate, the enzyme acting upon it and the end product?

ion Q63) The cells in the crypts secrete large quantities of water and electrolytes over the surface of adjacent villi are:

ion Q64) Select the incorrect statement related to digestion in man:

ion Q65) Which of the following is incorrect regarding the disorder of alimentary canal:

ion Q66) Pylorus is situated in the junction of:

ion Q67) Which of the following is the correct matching of the vitamin, its nature and the deficiency disease?