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In the context of respiration in various animals, consider the following assertions —


1. The process of breakdown of food in the cell with the release of energy is called cellular respiration.


2. In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen.


3. Food can also be broken down, without using oxygen. This is called aerobic respiration.


Which of the above assertions is/are correct?

  • a)
    1 and 2 Only

  • b)
    2 Only

  • c)
    3 Only

  • d)
    1, 2 and 3

Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
In the context of respiration in various animals, consider the followi...
Assertion 1: The process of breakdown of food in the cell with the release of energy is called cellular respiration.

Explanation: Cellular respiration is the process by which cells break down food molecules to produce energy in the form of ATP (adenosine triphosphate). This process occurs in the mitochondria of the cell. During cellular respiration, glucose is oxidized and broken down into carbon dioxide and water, and energy is released in the form of ATP.

Assertion 2: In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen.

Explanation: This statement is correct. In aerobic respiration, which is the most common form of cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide, water, and energy in the form of ATP. The overall chemical equation for aerobic respiration is:

C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy (ATP)

The breakdown of glucose occurs in a series of steps, such as glycolysis, the Krebs cycle, and the electron transport chain, which take place in different parts of the cell, particularly in the mitochondria.

Assertion 3: Food can also be broken down without using oxygen. This is called anaerobic respiration.

Explanation: This statement is incorrect. The process of breaking down food without using oxygen is called anaerobic respiration, not aerobic respiration. During anaerobic respiration, glucose is partially broken down in the absence of oxygen, leading to the production of lactic acid or alcohol, depending on the organism. However, anaerobic respiration is much less efficient in terms of energy production compared to aerobic respiration.

Conclusion: After analyzing the three assertions, we can conclude that Assertion 1 and Assertion 2 are correct, while Assertion 3 is incorrect. Therefore, the correct answer is option 'A' - 1 and 2 Only.
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Community Answer
In the context of respiration in various animals, consider the followi...
When breakdown of glucose occurs with the use of oxygen, it is called aerobic respiration; whereas food can also be broken down, without using oxygen. This is called anaerobic respiration.
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In the context of respiration in various animals, consider the following assertions —1. The process of breakdown of food in the cell with the release of energy is called cellular respiration.2. In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen.3. Food can also be broken down, without using oxygen. This is called aerobic respiration.Which of the above assertions is/are correct?a)1 and 2 Onlyb)2 Onlyc)3 Onlyd)1, 2 and 3Correct answer is option 'A'. Can you explain this answer?
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In the context of respiration in various animals, consider the following assertions —1. The process of breakdown of food in the cell with the release of energy is called cellular respiration.2. In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen.3. Food can also be broken down, without using oxygen. This is called aerobic respiration.Which of the above assertions is/are correct?a)1 and 2 Onlyb)2 Onlyc)3 Onlyd)1, 2 and 3Correct answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about In the context of respiration in various animals, consider the following assertions —1. The process of breakdown of food in the cell with the release of energy is called cellular respiration.2. In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen.3. Food can also be broken down, without using oxygen. This is called aerobic respiration.Which of the above assertions is/are correct?a)1 and 2 Onlyb)2 Onlyc)3 Onlyd)1, 2 and 3Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the context of respiration in various animals, consider the following assertions —1. The process of breakdown of food in the cell with the release of energy is called cellular respiration.2. In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen.3. Food can also be broken down, without using oxygen. This is called aerobic respiration.Which of the above assertions is/are correct?a)1 and 2 Onlyb)2 Onlyc)3 Onlyd)1, 2 and 3Correct answer is option 'A'. Can you explain this answer?.
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