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
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 17 of 17 written questions. Open one to see it on the real paper.
- 0973/31 · October/November 2024 · Q10b[1]
Mineral ions are also absorbed by plants. Circle the main mineral ion required for the synthesis of chlorophyll.
See it on the paper → - 0973/41 · October/November 2024 · Q10a[2]
The growth of surface producers in the lake increases during eutrophication. Explain why, using the information in Fig. 10.1.
See it on the paper → - 0973/32 · May/June 2024 · Q7c[1]
Describe the importance of nitrate ions in the synthesis of proteins.
See it on the paper → - 0973/31 · May/June 2023 · Q7d[1]
Plants need nitrate ions to make an important substance. Circle the name of this substance. amino acid fatty acid starch
See it on the paper → - 0973/42 · May/June 2023 · Q7b(i)[2]
Explain why this pollution increases the growth of producers in rivers.
See it on the paper → - 0973/31 · October/November 2022 · Q7c[3]
Magnesium is an essential mineral needed by plants. Draw three lines to link the boxes and make three correct sentences about magnesium ions in plants. are a component of starch in a plant. are absorbed by the root hairs. are transported in the xylem. Magnesium ions are required for synthesis of chlorophyll. enter a pl...
See it on the paper → - 0973/31 · October/November 2022 · Q7d[1]
State the name of the principal ion required to make amino acids in a plant.
See it on the paper → - 0973/41 · October/November 2022 · Q4a[2]
A seed germinates. State two environmental conditions needed for germination.
See it on the paper → - 0973/41 · October/November 2022 · Q4b(i)[1]
State the name of the tropic response shown in Fig. 4.1.
See it on the paper → - 0973/41 · October/November 2022 · Q4b(ii)[4]
Complete the sentences to explain the mechanism of this growth response. A plant hormone called is made in the shoot tip and moves through the plant. The hormone collects on the side of the shoot. This stimulates growth causing cell . The shoot grows away from the direction of .
See it on the paper → - 0973/32 · May/June 2022 · Q10c(i)[1]
State the main mineral ion required for making chlorophyll.
See it on the paper → - 0973/41 · October/November 2021 · Q2e[3]
Ammonia reacts with sulfuric acid. The balanced symbol equation is shown. 2NH 3 + H 2 SO 4 (NH 4 ) 2 SO 4 Calculate the mass of sulfuric acid, H 2 SO 4 , needed to react completely with 68 g of ammonia. Show your working. [A r : H, 1; N, 14; O, 16; S, 32] mass of sulfuric acid = g
See it on the paper → - 0973/31 · October/November 2020 · Q5b(i)[2]
Use this information to complete the word equation for the thermal decomposition of sodium hydrogencarbonate. sodium hydrogencarbonate
See it on the paper → - 0973/31 · October/November 2020 · Q5b(ii)[1]
The mass of sodium carbonate that remains after the reaction is smaller than the original mass of sodium hydrogencarbonate. Explain why.
See it on the paper → - 0973/41 · May/June 2020 · Q10c[3]
Explain why plants need magnesium ions for photosynthesis and healthy growth. Use ideas about energy in your answer.
See it on the paper → - 0973/42 · May/June 2020 · Q11b[2]
Describe why it is important that farmers use fertilisers containing nitrogen, phosphorus and potassium.
See it on the paper → - 0973/42 · May/June 2019 · Q13b[2]
Table 13.1 shows some information about two mineral ions found in fertilisers. Table 13.1 mineral ion function of mineral ion magnesium effect a deficiency in the mineral ion has on plant yellow leaves making amino acids Complete Table 13.1.
See it on the paper →
What examiners said
Few candidates suggested that plants make amino acids from nitrate ions. All five options were equally popular.
— Examiner report, May/June 2023, 0973/31 Q7(d) (Cambridge)
Responses to this question were often vague. This question required knowledge from different areas of the syllabus and candidates needed to combine their knowledge of the use of nitrate ions to produce amino acids required for growth and the composition of fertilisers. The best responses were able to link these ideas.
— Examiner report, May/June 2023, 0973/42 Q7(b)(i) (Cambridge)
Candidates needed to use all the information in the question to produce a word equation. Many gained partial credit.
— Examiner report, October/November 2020, 0973/31 Q5(b)(i) (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.