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What are proenzymes (zymogens) ?...

What are proenzymes (zymogens) ?

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Inactive forms of enzymes.
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Which of the following statements is/are incorrect regarding digestion and absorption of food in human beings : (a) About 90% of starch is hydrolysed by salivary amylase in our oral cavity (b) Entero-endocrine cells in our stomach secrete the proenzyme trypsinogen (c) Vitamin-D is produced in human body in skin (d) Bile salts act as activator of pancreatic lipase

Name the cells found in gastric glands which secrets the proenzyme pepsinogen

" The proenzyme pepsinogen is not converted into active enzyme pepsin due to the damage of "

Name one enzyme of gastric juice and one of pancreatic juice that are released as proenzymes in the human alimentary canal. Give the substrate and end product of each.

Which of the following statements are true regarding digestion and absorption of food in humans> Oxyntic cells in our stomach secrete the proenzyme pepsinogen. Fructose and amino acids are absorbed by simple diffusion. About 30% of starch is hydrolysed by salivary amylase in our mouth.