Master Pearson Edexcel A Level Biology A (Salters-Nuffield) with examiner strategies on level-of-response essays, precision calculations, 'Devise' experimental design, and navigating the Paper 3 pre-released scientific article.
読了時間 5 分更新日: 2026年6月21日
試験の概要
試験数
3
満点
300
制限時間
6時間
出題形式
5
試験
時間
配点
問題数
配点比率
出題形式
Paper 1
2時間
100
10
33.3%
Multiple Choice, Short Open-Response, Structured Data Analysis, Mathematical Calculation, Level-of-Response Extended Writing
Paper 2
2時間
100
10
33.3%
Multiple Choice, Short Open-Response, Structured Data Analysis, Mathematical Calculation, Level-of-Response Extended Writing
Paper 3
2時間
100
8
33.3%
Short Practical-Based Open Response, Structured Calculations, Synoptic Article comprehension (Q8)
評価段階
A*ABCDEU
電卓の規定
A scientific or graphical calculator that meets JCQ regulations may be used (some GCSE Mathematics and Science papers are non-calculator). Graphical calculators must be set to exam mode; you must clear any stored programs, notes or data before the exam, and the calculator must not be able to retrieve stored text or formulae.
目的: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.
使う場面: Checking solutions, sketching, or solving where an analytic method is hard.
手順
Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.
試験での注意: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Numerical equation solver
Graphical calculator / GDC (exam mode)
目的: Solve an equation or find a variable numerically when an algebraic route is long or implicit.
使う場面: Iterative or implicit equations, or to confirm an algebraic solution.
手順
Use the equation/zero solver, entering the equation and a sensible starting estimate.
試験での注意: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Numerical integration & differentiation
Graphical calculator / GDC (exam mode)
目的: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.
使う場面: Checking calculus answers, or where only a numerical value is needed.
手順
Use the GDC's numeric integral / derivative function with the limits or the point.
試験での注意: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
Statistics & probability distributions
Graphical calculator / GDC (exam mode)
目的: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.
使う場面: Statistics questions and hypothesis tests.
手順
Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).
試験での注意: Allowed under JCQ rules, but you must still show your method — an unsupported calculator answer earns no method marks. Clear all stored programs, notes and data (graphical calculators in exam mode) before the exam.
よくあるミス
1high影響する配点: 3Calculations & Graph Analysis
Failing to perform correct unit conversions when comparing data (e.g., converting nanometres to micrometres, or milligrams to micrograms).
回避方法: Always state the conversion factor explicitly in your workings (e.g., multiply/divide by 1000) and double-check your answer's metric plausibility before converting to standard form.
2high影響する配点: 6Practical / Experimental Devise
Proposing generic, non-numerical experimental setups in 'Devise an investigation' questions.
回避方法: Specify at least 5 distinct numerical concentrations, temperatures, or pH values, and name specific controlled variables (such as species, age, or mass of the organism) and state how they are kept constant.
3high影響する配点: 3Short Answer Descriptive
Providing general or non-specific descriptions of cellular processes instead of utilizing exact biological terminology (e.g., saying 'materials move' instead of naming active transport or carrier proteins).
回避方法: Ensure you name the exact enzymes (e.g., Rubisco, ATPase), structural proteins (e.g., carrier proteins, spindle fibres), and precise molecular components involved in the process.
4medium影響する配点: 4Short Answer Descriptive
Confusing the role of T-helper cells with killer T-cells or B-cells during the immune response discussion.
回避方法: Recall that T-helper cells release cytokines to stimulate B cells and T-killer cells, whereas B cells differentiate into antibody-secreting plasma cells.
5low影響する配点: 3Calculations & Graph Analysis
Assuming that a lethal allele causes a typical 3:1 Mendelian ratio instead of an adjusted 2:1 ratio.
回避方法: If a homozygous combination is lethal, exclude those homozygous recessive offspring from the denominator since they do not survive to be recorded.
6high影響する配点: 2Calculations & Graph Analysis
Omitting standard deviation error bars when interpreting overlapping data sets to evaluate statistical significance.
回避方法: Check if standard deviation error bars overlap. If they overlap, state that the difference between the means is not statistically significant.
7medium影響する配点: 3Short Answer Descriptive
Failing to realize that somatic gene therapy (e.g., treating eye tissue) will not prevent offspring from inheriting the disease.
回避方法: Explain that somatic gene therapy does not alter the DNA within gametes (sperm and egg cells), meaning the recessive disease allele can still be inherited.