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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Answer the Following in Detail. Explain the Process of Cellular Respiration. - Biology

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प्रश्न

Answer the following in detail.

Explain the process of Cellular Respiration.

थोडक्यात उत्तर
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उत्तर

Cellular Respiration is a biochemical process that involves the oxidation of glucose to release energy, carbon dioxide, and water are released as by-products. 

\[\ce{\underset{\text{glucose}}{C6H12O6}+\underset{\text{oxygen}}{6O2}->[enzymes]\underset{\text{cardon dioxide}}{6CO2}+\underset{\text{water}}{6H2O}+energy}\]

It involves a series of chemical reactions controlled by different enzymes. The energy released in the process is stored in the form of an energy-rich substance called ATP (Adenosine triphosphate). The ATP molecules are stored in the cells and later on can be broken down to release energy for various metabolic activities. The entire process takes place partially in the cytoplasm and partially in the mitochondria of our body cells. The process of conversion of glucose molecules in food into energy-rich molecules, CO2, and water with the help of oxygen is known as respiration.

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पाठ 4: Photosynthesis and Respiration - Exercises

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सेलिना Concise Biology [English] Class 7 ICSE
पाठ 4 Photosynthesis and Respiration
Exercises | Q 2

संबंधित प्रश्‍न

Fill in the following blank with suitable word:

 The organs of respiration in man are the _____________.


Describe the process of respiration in Amoeba. State whether it is anaerobic respiration or aerobic respiration.


State the three common features of all the respiratory organs like skin, gills and lungs.


One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:


Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for sometime. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed. The gas Z extinguishes a burning matchstick.

(a) What could be (i) X, (ii) Y, and (iii) Z?

(b) What is the process of converting sugar into substance Y by the action of X known as?

(c) What type of respiration is exhibited by X in the above process?


Consider the following chemical reactions which take place in different organisms/tissues under various conditions:

(i) Glucose →   Respiration    ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→   Respiration    ">Carbon dioxide + Water + Energy
(iii) Glucose →   Respiration    "> Lactic acid + Energy

(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?


Name the body structure concerned with the given functional activity:

Combines with the oxygen in the lungs.


Given below is an overall chemical reaction of a certain process:

C6H12O6→LacticAcid+2ATP+Heat enengy

Name one tissue in which this reaction occur.


The oxygen dissociation curve is a sigmoid curve and it shifts towards the right due to ______.


Match the correct answers with the type of respiration and respiratory substances.

Respiration Types of Substrates
A. Floating respiration I. Proteins
B. Cytoplasmic respiration II. Glucose
C. Protoplasmic respiration III. Carbohydrates and fats

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