Biology paper 1, 4.4 Bioenergetics.

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9 Terms

1
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What is meant by ‘limiting factor’ [1 mark]

Factor that limit the rate of photosynthesis.

2
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Give 5 uses of glucose in plant. [5 marks]

  • Respiration.

  • Converted into starch.

  • Produce fat.

  • Produce cellulose.

  • Produce amino acid.

3
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<p>Determine all possible limiting factor by using the graph. [3 marks]</p>

Determine all possible limiting factor by using the graph. [3 marks]

  • Concentration of carbon dioxide.

  • Temperature.

  • Number of chlorophyll.

4
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State the reactant and product during aerobic respiration.

Do not refer to energy. [4 marks]

Use oxygen and glucose to produce carbon dioxide and water.

5
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State the reactant and product during anaerobic respiration.

Do not refer to energy. [2 marks]

Use glucose to produce lactic acid.

6
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State the reactant and product during anaerobic respiration in plant and yeast cells.

Do not refer to energy. [3 marks]

Use glucose to produce ethanol and carbon dioxide.

7
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What is meant by ‘oxygen debt’. [2 marks]

Amount of extra oxygen that need for body after exercise to accumulated lactic acid.

8
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Describe and explain what happen in the body during exercise. [6 marks]

  • More muscle contract

  • (So) require more energy.

  • (So) the rate of aerobic respiration increase.

  • (So) more oxygen needed.

  • (So) breathing rate and breathing volume increase.

  • (So) heart rate increase.

9
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What is meant by ‘metabolism’. [1 mark]

Sum of all chemical reaction in the body.