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Class 9 Biology · Chapter 8 · Test 5

Bioenergetics Full Test

25 MCQs covering ATP, oxidation-reduction reactions, photosynthesis, chlorophyll, aerobic and anaerobic respiration, fermentation, and energy use.

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

    Bioenergetics is the study of:

    • AEnergy transformations in living organisms
    • BClassification of living organisms
    • CCellular structure only
    • DProtein synthesis only
    Show answer

    Answer: A

    Bioenergetics is the study of how living organisms acquire, convert, store, and utilize energy.

  2. Question 2

    In oxidation, a molecule:

    • ALoses electrons
    • BGains electrons
    • CLoses ATP
    • DGains glucose
    Show answer

    Answer: A

    The chapter defines oxidation as the loss of electrons.

  3. Question 3

    In reduction, a molecule:

    • ALoses electrons
    • BGains electrons
    • CLoses oxygen only
    • DGains ATP
    Show answer

    Answer: B

    The chapter defines reduction as the gain of electrons.

  4. Question 4

    ATP is known as the cell's:

    • AEnergy currency
    • BGenetic material
    • CStructural material
    • DDigestive material
    Show answer

    Answer: A

    ATP is described as the chief energy currency of cells.

  5. Question 5

    Which combination correctly describes the three components of ATP?

    • AAdenine, ribose and three phosphate groups
    • BAdenine, glucose and two phosphate groups
    • CThymine, ribose and three phosphate groups
    • DAdenine, deoxyribose and one phosphate group
    Show answer

    Answer: A

    ATP consists of adenine, ribose and three phosphate groups.

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