OCR GCSE · 分析與預測

2023 OCR GCSE Gateway Science - Biology A - J247 Past Paper 分析與預測

A comprehensive analysis of the 2023 J247 Gateway Biology papers, highlighting key areas of student strength, common examiner pitfalls in cell respiration and genetics, and strategic advice for upcoming cohorts.

更新: 2026年6月14日

分析模擬試題
難度 3.2/5
總分
180
時間
210 分鐘
最高頻課題
—

分卷

J247/03: Paper 3 (Higher Tier): 90 分 · 105 分鐘J247/04: Paper 4 (Higher Tier): 90 分 · 105 分鐘

考官重點

官方報告整理

常見失分位

  • Confusing the functions of the nervous and endocrine systems, specifically underestimating the speed and duration of endocrine responses.
  • Incorrectly rounding mathematical calculations; failing to show clear working out for percentage increase/decrease questions.
  • Inability to distinguish between random errors (e.g. leaving excess fluid on plant tissue) and systematic errors (e.g. uncalibrated weighing scale).
  • Struggling with 'compare' command words on graphs, often quoting raw data points without stating the overall trends.

常見誤解

  • Believing that plants do not respire, or that they only respire at night when they are not photosynthesising.
  • Confusing selective breeding (artificial selection) with genetic engineering, or describing cloning techniques when asked for selective breeding.
  • Assuming that antibiotics are effective against viral infections like Hepatitis A.
  • Believing that antibodies or lymphocytes 'engulf' pathogens (confusing them with phagocytes/phagocytosis).

失分原因

  • Missing units or incorrect unit conversions, such as converting grams to kilograms or ml to ml/hour.
  • Failing to draw a continuous double outer membrane and clear internal cristae in scientific drawings of mitochondria.
  • In genetic cross diagrams, failing to state the gametes clearly or using non-matching letters for alleles.
  • In Level of Response (6-mark) questions, failing to cover all three bulleted prompts, which limits the response to Level 1 or 2 regardless of detail.

等級 cut-off 估算

更新: 2026年6月15日

來源: OCR
等級分數百分比
9133/18074%
8121/18067%
7109/18061%
691/18051%
573/18041%
455/18031%
346/18026%
Official grade boundaries published by OCR.

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