Respiration: aerobic respiration — KCSE Biology

KCSE Biology · 72 practice questions · 3 syllabus objectives

32 easy31 medium9 hard

What You'll Learn

Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.

Write the equation for aerobic respiration

State the role of the mitochondria in aerobic respiration

Respiration: aerobic respiration

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easySHORT ANSWER3 marks

Write the overall equation for aerobic respiration and state where in the cell it takes place.

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Part (a) — 3 marks

Correct reactants (glucose + oxygen) (1 mk)

Correct products (carbon dioxide + water) (1 mk)

Correct location (cytoplasm for glycolysis; mitochondria for Krebs/ETC) (1 mk)

easySHORT ANSWER2 marks

State phases of aerobic respiration and with a reason, state the phase that yields more energy.

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Part (a) — 2 marks

Glycolysis and Krebs cycle (and oxidative phosphorylation / electron transport chain) (1 mk)

Krebs cycle/electron transport chain yields more energy as it produces more ATP molecules per glucose (1 mk)

easySHORT ANSWER3 marks

Write the word equation for aerobic respiration and state where in the cell it takes place.

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Part (a) — 3 marks

Correct reactants (glucose + oxygen) (1 mk)

Correct products (carbon dioxide + water) (1 mk)

Correct location (cytoplasm for glycolysis; mitochondria for Krebs/ETC) (1 mk)

Write the equation for anaerobic (in yeast) respiration and state where in the cell it occurs.

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