Q. No.Most of the water in alimentary canal is absorbed in small intestine. But about 1500 ml per day reaches it. What is the approximate amount of water that is absorbed by the large intestine?
1. 100 mL
2. 400 mL
3. 1300 mL
4. 1495 mL
1. 100 mL
2. 400 mL
3. 1300 mL
4. 1495 mL
The mechanism by which the fat-soluble vitamins move across the intestinal mucosa is:
1. facilitated diffusion
2. active cotransport
3. active antiport
4. simple diffusion
Glucose concentration is likely to be most variable in:
1. aorta
2. hepatic vein
3. renal vein
4. hepatic portal vein
The greatest benefit of bacterial symbiosis to humans amongst the following would be:
1. production of vitamins A and C
2. generation of gases needed for elimination
3. absorption of organic materials
4. production of biotin and vitamin K
Our teeth are
1. Acrodont and homodont
2. Homodont and polyphyodont
3. Thecodont, diphyodont and heterodont
4. Acrodont, homodont and polyphyodont
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The dysfunction of which of the following will most adversely affect the digestion of food in humans?
1. Gall bladder
2. Stomach
3. Pancreas
4. Salivary glands
Which of the following is the structural and functional unit of liver?
1. Hepatic cells
2. Hepatic cord
3. Hepatic lobule
4. Hepatic lobe
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Process of digestion is accomplished by —
1. Only mechanical process
2. Only chemical process
3. Neither mechanical nor chemical process
4. Both mechanical and chemical processes
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Which one of the following statements is true regarding digestion and absorption of food in humans
1. Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like
2. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.
3. About 60% of starch is hydrolysed by salivary amylase in our mouth.
4. Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
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Which of the following statements is false?
1. The breakdown of most of biomacromolecules occurs in duodenum
2. Simple substances (digested foods) are absorbed in the jejunum and ileum
3. Very significant digestive activity occurs in large intestine
4. Undigested and unabsorbed substances are passed on to the large intestine
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