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IGCSE Co-ordinated Sciences (Double Award) 0654 · Biology · 31

0654.B6.1.06 — Explain the importance of: (a). nitrate ions for making amino acids (b). magnesium ions for making chlorophyll 4 Investigate and understand : past paper questions

6 real questionsasked in 3 of the last 10 exam series2019–2025usually: Explain, State, Other, Justify, What

Real questions on 0654.b6.1.06 — explain the importance of: (a). nitrate ions for making amino acids (b). magnesium ions for making chlorophyll 4 investigate and understand

The newest 6 of 6 written questions. Open one to see it on the real paper.

  1. 0654/43 · October/November 2025 · Q2a(ii)[2]

    Magnesium ions and nitrate ions are two mineral ions taken up by active transport. Explain the importance of magnesium ions and nitrate ions in plants. magnesium ions nitrate ions

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  2. 0654/42 · February/March 2025 · Q2b(iii)[1]

    State the function of nitrate ions in plants.

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  3. 0654/43 · October/November 2024 · Q10e[2]

    Explain the effect of a magnesium deficiency in the soil on the colour of the plant leaves.

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  4. 0654/21 · May/June 2021 · Q24[1]

    Other than hydrogen and oxygen, which substance provides only one of the essential elements for plant growth?

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  5. 0654/42 · May/June 2020 · Q16[3]

    The need for plants to obtain mineral salts from the soil.

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  6. 0654/21 · May/June 2019 · Q5[1]

    What is the plant lacking?

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What examiners said

The majority of candidates were able to state one function of nitrate ions in plants in relation to a biological compound such as amino acids.

— Examiner report, February/March 2025, 0654/42 Q2(b)(iii) (Cambridge)

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0654.B6.1.06 — Explain the importance of: (a). nitrate ions for making amino acids (b). magnesium ions for making chlorophyll 4 Investigate and understand — IGCSE Co-ordinated Sciences (Double Award) 0654 past paper questions | AssessPro