Q. No.Which of the following processes occurring in the stomach is autocatalysis?
1. Low pH denaturing the proteinaceous substances in food.
2. Low pH activating pepsinogen to pepsin.
3. Absorption of monomeric molecules in the chyme.
4. Pepsin activating more pepsinogen molecules.
1. Low pH denaturing the proteinaceous substances in food.
2. Low pH activating pepsinogen to pepsin.
3. Absorption of monomeric molecules in the chyme.
4. Pepsin activating more pepsinogen molecules.
The vomiting center in human beings is located in:
1. Pons Varolii
2. Medulla oblongata
3. Hypothalamus
4. Cerebrum
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Amongst the enteroendocrine cells, histamine is secreted by:
1. Enterochromaffin cells
2. Enterochromaffin like cells
3. I cells
4. D cells
Marasmus is not characterized by:
1. Inadequate energy intake in all forms, including proteins
2. Loss of muscle mass and subcutaneous fat
3. Edema
4. an occurrence prior to age of 1 year
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Sufficient calorie intake but with insufficient protein intake, edema and an enlarged liver with fatty infiltrates characterize the disorder:
1. Kwashiorkor
2. Marasmus
3. Bulimia
4. Anorexia nervosa
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The part of the small intestine where maximum absorption takes place is lined by:
1. Squamous epithelium
2. Cuboidal brush bordered epithelium
3. Columnar brush bordered epithelium
4. Transitional epithelium
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The majority of the iron absorbed from digested food or supplements is absorbed in the:
1. Duodenum
2. Jejunum
3. Ileum
4. Cecum
The pancreatic acini:
1. Produce insulin and glucagon
2. Produce somatostatin
3. Secrete hydrolases
4. Store glucose and fats
Lipases can be activated by:
1. HCl
2. Secretions of Brunner’s glands
3. Bile
4. Cholecystokinin
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