Digestion and Absorption

Digestion and Absorption

Moderate Questions
Difficult Questions

Advanced Zoology

Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
Body Fluids and Circulation
Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
Chemical Coordination and Integration
Human Reproduction
Human Health and Disease
Biotechnology Principles and Processes
Biomolecules (Zoology)
Evolution (Zoology)
Biotechnology and its Applications
Reproductive Health
  1. Fructose is absorbed into the blood through mucosa cells of intestine by the process called:








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    Facilitated transport is a form of passive transport in which materials are moved across the plasma membrane by a transport protein down their concentration gradient; hence, it does not require energy.

    Correct Option: B

    Facilitated transport is a form of passive transport in which materials are moved across the plasma membrane by a transport protein down their concentration gradient; hence, it does not require energy.

  1. Select the correct match of the digested products in humans given in column -I with their absorption site and mechanism in column-II









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    Small intestine is major area of absorbtion of nutrients. Approximately 80% of absorbtion take place here. Glucose, fructose, fatty acids, amino acids (Glycine etc.) are absorbed through mucosa into blood and lymph by active absorbtion.

    Correct Option: D

    Small intestine is major area of absorbtion of nutrients. Approximately 80% of absorbtion take place here. Glucose, fructose, fatty acids, amino acids (Glycine etc.) are absorbed through mucosa into blood and lymph by active absorbtion.

  1. Which one of the following enzymes carries out the initial step in the digestion of milk in humans?








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    Rennin is an enzyme that is essential for the protein digestion. It is active in acidic medium and inactive in normal gastric juice of adult.

    Correct Option: B

    Rennin is an enzyme that is essential for the protein digestion. It is active in acidic medium and inactive in normal gastric juice of adult.

  1. One of the constituents of the pancreatic juice while poured into the duodenum in humans, is:








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    Trypsinegen it is inactive form and we know that all enzymes of pancreas are secreted in this form. Enzyme enterokinase is secreted from the duodenal mucosa, at the chemical stage that changes the inactive pancreatic secretion trypsinogen to trypsin.

    Correct Option: A

    Trypsinegen it is inactive form and we know that all enzymes of pancreas are secreted in this form. Enzyme enterokinase is secreted from the duodenal mucosa, at the chemical stage that changes the inactive pancreatic secretion trypsinogen to trypsin.

  1. Which one of the following vitamins can be synthesized by bacteria inside the gut?








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    Vitamin K is a fat soluble vitamin produced in sufficient quantity by intestinal bacteria. Vitamin B1 is a water soluble vitamin, obtained partly from intestinal bacteria and partly from diet. Vitamin D is a fat soluble sterol synthesized in the skin, Vitamin C is obtained specially from citrus fruits.

    Correct Option: D

    Vitamin K is a fat soluble vitamin produced in sufficient quantity by intestinal bacteria. Vitamin B1 is a water soluble vitamin, obtained partly from intestinal bacteria and partly from diet. Vitamin D is a fat soluble sterol synthesized in the skin, Vitamin C is obtained specially from citrus fruits.