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Define oxygen dissociation curve. Can you suggest any reason f
Biology
Biology

Class 11

NCERT

Publisher:
NCERT
Subject:
Biology
1

Chapter 1: The Living World

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2

Chapter 2: Biological Classification

12 questions

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3

Chapter 3: Plant Kingdom

12 questions

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4

Chapter 4: Animal Kingdom

15 questions

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5

Chapter 5: Morphology of Flowering Plants

15 questions

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6

Chapter 6: Anatomy of Flowering Plants

12 questions

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7

Chapter 7: Structural Organization in Animals

14 questions

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8

Chapter 8: Cell: The Unit of Life

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9

Chapter 9: Biomolecules

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10

Chapter 10: Cell Cycle and Cell Division

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11

Chapter 11: Transport in Plants

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12

Chapter 12: Mineral Nutrition

10 questions

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13

Chapter 13: Photosysnthesis in Higher Plants

9 questions

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14

Chapter 14: Respiration in Plants

12 questions

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15

Chapter 15: Plant Growth and Development

11 questions

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16

Chapter 16: Digestion and Absorption

15 questions

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17

Chapter 17: Breathing and Exchange of Gases

14 questions

Q1
What is the site of gaseous exchange in an insect?
Q2
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
Q3
Have you heard about hypoxia? Try to gather information about it, and discuss with your friends.
View all question
18

Chapter 18: Body Fluids and Circulation

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19

Chapter 19: Excretory Products and their Elimination

12 questions

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20

Chapter 20: Locomotion and Movement

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21

Chapter 21: Neural Control and Coordination

12 questions

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22

Chapter 22: Chemical Coordination and Integration

9 questions

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Question
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Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?

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Updated on: Feb 2, 2024

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Text SolutionText solutionverified iconVerified

The oxygen dissociation curve is a graphical representation of the percentage of saturation of oxyhaemoglobin at various partial pressures of oxygen.
In the lungs, the partial pressure of oxygen is high. Hence, haemoglobin binds to oxygen and forms oxyhaemoglobin. Tissues have a low oxygen concentration. Therefore, at the tissues, oxyhaemoglobin releases oxygen to form haemoglobin. The sigmoid shape of the dissociation curve is because of the binding of oxygen to haemoglobin. As the first oxygen molecule binds to haemoglobin, it increases the affinity for the second molecule of oxygen to bind. Subsequently, haemoglobin attracts more oxygen.
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Question Text
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?
Updated OnFeb 2, 2024
TopicBreathing and Exchange of Gases
SubjectBiology
ClassClass 11
Answer TypeText solution:1 Video solution: 2
Upvotes208
Avg. Video Duration1 min