Ace your Cambridge International AS Level Biology (9700) exam with our comprehensive guide. Master critical terminology, tackle practical drawing rules, and learn core calculations including magnification and serial dilutions to secure maximum marks.
読了時間 6 分更新日: 2026年6月21日
試験の概要
試験数
3
満点
140
制限時間
4時間 30分
出題形式
3
試験
時間
配点
問題数
配点比率
出題形式
Paper 1 Multiple Choice
1時間 15分
40
40
31%
Multiple Choice
Paper 2 AS Level Structured Questions
1時間 15分
60
6
46%
Structured Questions
Paper 3 Advanced Practical Skills 2
2時間
40
2
23%
Practical Skills
評価段階
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電卓の規定
A silent scientific calculator is required where the syllabus permits one. It must NOT be graphical, programmable, or capable of symbolic algebra (CAS), and it must contain no stored programs or notes.
AO1: AO1: Knowledge with understanding (40%)
AO2: AO2: Handling information and solving problems (40%)
AO3: AO3: Experimental skills and investigations (20%)
過去問と採点基準にもとづいて作成（2023–2025）。
電卓プログラム
Table mode for roots & turning points
Scientific calculator (e.g. Casio fx-991 series)
目的: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.
使う場面: Solving or sketching a function when you want to find where its graph crosses or turns.
手順
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.
試験での注意: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Statistics mode (mean, SD & regression)
Scientific calculator (e.g. Casio fx-991 series)
目的: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.
使う場面: Any data-handling, statistics, or required-practical analysis question.
手順
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.
試験での注意: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Carry exact values with Ans & memory
Scientific calculator (e.g. Casio fx-991 series)
目的: Keep full-precision intermediate values to avoid rounding errors.
使う場面: Multi-step calculations where premature rounding loses the final accuracy mark.
手順
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.
試験での注意: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
Equation solver — to CHECK your working
Scientific calculator (e.g. Casio fx-991 series)
目的: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.
使う場面: As a check only, after solving by hand.
手順
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.
試験での注意: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
よくあるミス
1high影響する配点: 1Cell membranes and transport (Biology (AS Level))
Using the general term 'cell membrane' instead of the precise 'cell surface membrane' or 'plasma membrane'.
回避方法: Always refer to the outer boundary of an animal cell as the 'cell surface membrane' or 'plasma membrane' when describing its location, structure, or function.
2high影響する配点: 2The microscope in cell studies
Failing to convert millimeter measurements to micrometers during magnification calculations, leading to answers off by a factor of 1000.
回避方法: Always multiply your millimeter measurement by 1000 to convert to micrometers (µm) before substituting values into the magnification formula (A = I/M or M = I/A).
3medium影響する配点: 1Transport of oxygen and carbon dioxide (Transport in mammals)
Omitting the word 'ion' when discussing physiological shifts, such as chloride or hydrogen carbonate movements.
回避方法: Specifically state 'chloride ions' or 'hydrogencarbonate ions' to satisfy both scientific and chemical precision requirements.
4high影響する配点: 3The microscope in cell studies
Drawing plant tissue plans in Paper 3 with shaded structures, sketchy/shaky lines, or drawing individual cells in a low-power diagram.
回避方法: Use a sharp HB pencil to draw clean, thin, single, non-overlapping, and unshaded lines. Only draw tissue boundaries for low-power plans; do not draw individual cells.
5high影響する配点: 2Antibiotics (Infectious diseases)
Believing that penicillin digests or breaks existing cross-links in mature bacterial cell walls.
回避方法: Understand that penicillin is an enzyme inhibitor that targets transpeptidase, preventing the formation of *new* peptide cross-links during cell wall synthesis in growing bacteria.
6medium影響する配点: 1The gas exchange system
Confusing the physiological function of smooth muscle with elastic tissue/fibres in airways.
回避方法: Associate smooth muscle with active contraction and constriction of the airway, and elastic fibres with stretching and passive recoil to help expel air during exhalation.