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. 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. Gastric juice of infants contains:








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    Gastric juice of infants contains pepsinogen, lipase and rennin. Gastric juice does not contain amylase, maltase & nuclease.

    Correct Option: B

    Gastric juice of infants contains pepsinogen, lipase and rennin. Gastric juice does not contain amylase, maltase & nuclease.

  1. The initial step in the digestion of milk in humans is carried out by








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    Rennin (also called chymosin) is an enzyme that occurs in gastric juice and is a constituent of rennet. It coagulates milk by converting caseinogen to casein. The initial step in the digestion of milk in humans is carried out by rennin.

    Correct Option: C

    Rennin (also called chymosin) is an enzyme that occurs in gastric juice and is a constituent of rennet. It coagulates milk by converting caseinogen to casein. The initial step in the digestion of milk in humans is carried out by rennin.

  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. Emulsification of fat is carried out by








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    Bile salts viz sodium glycocholate & sodium taurocholate (both are organic salts present in bile) reduce the surface tension of large fat globules and break them to fine minute fat droplets. This process is known as emulsification of fats.

    Correct Option: B

    Bile salts viz sodium glycocholate & sodium taurocholate (both are organic salts present in bile) reduce the surface tension of large fat globules and break them to fine minute fat droplets. This process is known as emulsification of fats.