NEET Biology Digestion And Absorption Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation
Question & Answer Discuss:
HCl of gastric juice
(a) activates ptyalin and inactivates pepsin.
(b) inactivates ptyalin and activates pepsin.
(c) inactivates both ptyalin and pepsin.
(d) activates both ptyalin and pepsin.
Answer: (b)
HCl does not directly help in digestion. HCl of gastric juice inactivates ptyalin and activates pepsin. It converts proenzyme prorennin and pepsinogen into active rennin and pepsin respectively by lowering the pH of stomach between 1.5 - 2.5. HCl acidifies the food and stops the action of ptyalin.
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NEET Biology MCQ Topic Wise Exercise
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The Living World
-
Biological Classification
-
Plant Kingdom
-
Animal Kingdom
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Morphology of Flowering Plants
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Anatomy of Flowering Plants
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Structural Organisation in Animals
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Cell-The Unit of Life
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Biomolecules
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Cell Cycle and Cell Division
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Transport in Plants
-
Mineral Nutrition
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Photosynthesis in Higher Plants
-
Respiration in Plants
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Plant Growth and Development
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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
-
Reproduction In Organisms
-
Sexual Reproduction in Flowering Plants
-
Human Reproduction
-
Reproductive Health
-
Principles of Inheritance and Variation
-
Molecular Basis of Inheritance
-
Evolution
-
Human Health and Diseases
-
Strategies for Enhancement in Food Production
-
Microbes in Human Welfare
-
Biotechnology: Principles and Processes
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Biotechnology and Its Applications
-
Organisms and Populations
-
Ecosystem
-
Biodiversity and Conservation
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Environmental Issues
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