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Class 9 Chemistry · Chapter 5 · Test 8

Respiration and Biological Energy

25 MCQs covering aerobic respiration, anaerobic respiration, glycolysis, ATP, biological fuels, and lipids as energy reserves.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

  1. Question 1

    What type of reaction is respiration in terms of energy change?

    • AEndothermic
    • BExothermic
    • CNeutral
    • DReversible
    Show answer

    Answer: B

    Respiration is exothermic because chemical energy is released from food.

  2. Question 2

    What is required for aerobic respiration?

    • ANitrogen
    • BOxygen
    • CCarbon monoxide
    • DHydrogen
    Show answer

    Answer: B

    Aerobic respiration occurs in the presence of oxygen.

  3. Question 3

    Where does aerobic respiration occur in humans?

    • AIn the presence of oxygen
    • BOnly without oxygen
    • COnly in bacteria
    • DOnly in plants
    Show answer

    Answer: A

    Aerobic respiration in humans occurs when oxygen is available.

  4. Question 4

    What is a characteristic of anaerobic respiration?

    • AIt requires oxygen
    • BIt occurs without oxygen
    • CIt produces no energy
    • DIt occurs only in humans
    Show answer

    Answer: B

    Anaerobic respiration occurs without oxygen.

  5. Question 5

    Which organisms are mentioned as carrying out anaerobic respiration?

    • AOnly humans
    • BSome bacteria algae and yeast
    • COnly mammals
    • DOnly flowering plants
    Show answer

    Answer: B

    The chapter states that some bacteria algae and yeast can carry out anaerobic respiration.

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