• Skip to main content
  • Skip to secondary menu
  • Skip to primary sidebar
  • Skip to footer

CBSE Tuts

CBSE Maths notes, CBSE physics notes, CBSE chemistry notes

  • NCERT Solutions
    • NCERT Solutions for Class 12 English Flamingo and Vistas
    • NCERT Solutions for Class 11 English
    • NCERT Solutions for Class 11 Hindi
    • NCERT Solutions for Class 12 Hindi
    • NCERT Books Free Download
  • TS Grewal
    • TS Grewal Class 12 Accountancy Solutions
    • TS Grewal Class 11 Accountancy Solutions
  • CBSE Sample Papers
  • NCERT Exemplar Problems
  • English Grammar
    • Wordfeud Cheat
  • MCQ Questions

Process of Respiration and Equation

The study of human anatomy and physiology is a crucial branch of Biology Topics.

Introduction to Respiration, Definition and Meaning

We need energy to walk, run, climb the stairs, wash clothes, and cook food. Even when we are talking, eating, reading, writing or sleeping, energy is required. The processes like digestion of food, beating of heart, and movement of ribs and diaphragm during breathing, etc., which take place inside our body also need energy for their working. In fact, we need energy to perform all the activities which maintain our life, and also to do work. We get this energy from the food which we eat.
Respiration - An Overview 1
The food has stored energy. The stored energy of food is released slowly during the process of respiration which takes place inside our body all the time (even when we are sleeping). It is this energy which is then utilised in carrying out various life processes and doing our work. Respiration is essential because it provides us energy from the food which we eat and digest. So, all the living organisms need to respire to get energy from food required for their survival.

Many times we see our parents insisting that we should eat food regularly. This is because food is like a fuel for our body which provides us energy to maintain our life and stay healthy. It is not only the human beings who need energy. All other animals and plants also require energy. We will now discuss the process of respiration and how it provides energy to human beings, other animals, as well as plants.

All the organisms (plants and animals) require energy for performing various activities and maintaining their life. This energy is obtained by the breakdown of digested food during the process of respiration. The process of releasing energy from food is called respiration. Respiration occurs in all the living cells. The process of respiration involves taking in oxygen (of air) into the cells, using it for releasing energy by burning food, and then eliminating the waste products (carbon dioxide and water) from the body. Most living things need oxygen (of air) to obtain energy from food. This oxygen reacts with the food (like glucose) present in the body cells and burns them slowly to release energy. This energy is used by the living things. The process of respiration can be written in the form of a word equation as follows :
Respiration - An Overview 2

During respiration, the energy-rich food (like glucose) is broken down by oxygen into carbon dioxide and water, and energy is released (see Figure). This energy is used up by the organism (plant or animal). In fact, respiration is a kind of slow burning (or slow combustion) of food at ordinary temperature to produce energy. During respiration, oxygen is taken in and carbon dioxide is given out. Thus, the process of respiration involves the exchange of gases: oxygen and carbon dioxide. The process of respiration is the reverse of photosynthesis. This is because photosynthesis is the making of food (like glucose) by absorbing sunlight energy, whereas respiration is the breaking of food (like glucose) to release energy.
Respiration - An Overview 3
There are two main parts in the process of respiration :

(i) Breathing (taking in oxygen from air and releasing carbon dioxide), and

(ii) Using oxygen in the cells of the organism for releasing energy from food (like glucose).
The air which we ‘breathe in’ is transported to all the parts of the body and ultimately to each cell of the body. In the cells, oxygen (of air) brings about the breakdown of glucose (food).

The process of breakdown of food in the cells of the body with the release of energy is called respiration. Since the process of respiration which releases energy from food takes place inside the cells of the body, it is also called cellular respiration. The process of cellular respiration is common to all the living organisms (humans, other animals as ell as plants). It takes place in all the cells of an organism.

Primary Sidebar

NCERT Exemplar problems With Solutions CBSE Previous Year Questions with Solutoins CBSE Sample Papers
  • The Summer Of The Beautiful White Horse Answers
  • Job Application Letter class 12 Samples
  • Science Lab Manual Class 9
  • Letter to The Editor Class 12 Samples
  • Unseen Passage For Class 6 Answers
  • NCERT Solutions for Class 12 Hindi Core
  • Invitation and Replies Class 12 Examples
  • Advertisement Writing Class 11 Examples
  • Lab Manual Class 10 Science

Recent Posts

  • Understanding Diversity Question Answer Class 6 Social Science Civics Chapter 1 NCERT Solutions
  • Our Changing Earth Question Answer Class 7 Social Science Geography Chapter 3 NCERT Solutions
  • Inside Our Earth Question Answer Class 7 Social Science Geography Chapter 2 NCERT Solutions
  • Rulers and Buildings Question Answer Class 7 Social Science History Chapter 5 NCERT Solutions
  • On Equality Question Answer Class 7 Social Science Civics Chapter 1 NCERT Solutions
  • Role of the Government in Health Question Answer Class 7 Social Science Civics Chapter 2 NCERT Solutions
  • Vital Villages, Thriving Towns Question Answer Class 6 Social Science History Chapter 9 NCERT Solutions
  • New Empires and Kingdoms Question Answer Class 6 Social Science History Chapter 11 NCERT Solutions
  • The Delhi Sultans Question Answer Class 7 Social Science History Chapter 3 NCERT Solutions
  • The Mughal Empire Question Answer Class 7 Social Science History Chapter 4 NCERT Solutions
  • India: Climate Vegetation and Wildlife Question Answer Class 6 Social Science Geography Chapter 8 NCERT Solutions
  • Traders, Kings and Pilgrims Question Answer Class 6 Social Science History Chapter 10 NCERT Solutions
  • Environment Question Answer Class 7 Social Science Geography Chapter 1 NCERT Solutions
  • Understanding Advertising Question Answer Class 7 Social Science Civics Chapter 7 NCERT Solutions
  • The Making of Regional Cultures Question Answer Class 7 Social Science History Chapter 9 NCERT Solutions

Footer

Maths NCERT Solutions

NCERT Solutions for Class 12 Maths
NCERT Solutions for Class 11 Maths
NCERT Solutions for Class 10 Maths
NCERT Solutions for Class 9 Maths
NCERT Solutions for Class 8 Maths
NCERT Solutions for Class 7 Maths
NCERT Solutions for Class 6 Maths

SCIENCE NCERT SOLUTIONS

NCERT Solutions for Class 12 Physics
NCERT Solutions for Class 12 Chemistry
NCERT Solutions for Class 11 Physics
NCERT Solutions for Class 11 Chemistry
NCERT Solutions for Class 10 Science
NCERT Solutions for Class 9 Science
NCERT Solutions for Class 7 Science
MCQ Questions NCERT Solutions
CBSE Sample Papers
NCERT Exemplar Solutions LCM and GCF Calculator
TS Grewal Accountancy Class 12 Solutions
TS Grewal Accountancy Class 11 Solutions