A comprehensive study and exam-tips package for Cambridge International AS & A Level Biology (9700), featuring a detailed assessment profile, actionable HTML strategy guide, common examiner-reported pitfalls, and mathematical calculation methods.
อ่าน 3 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
5
คะแนนเต็ม
270
เวลาสอบ
7ชม. 45นาที
ประเภทคำถาม
3
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1: Multiple Choice
1ชม. 15นาที
40
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Paper 2: AS Level Structured Questions
1ชม. 15นาที
60
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Paper 3: Advanced Practical Skills
2ชม.
40
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Paper 4: A Level Structured Questions
2ชม.
100
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Paper 5: Planning, Analysis and Evaluation
1ชม. 15นาที
30
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เกณฑ์เกรด
A*ABCDEU
ข้อกำหนดเครื่องคิดเลข
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
AO2: AO2 Handling information and solving problems
วัตถุประสงค์: Tabulate \(y\) across a range of \(x\) to locate sign changes (roots) and approximate maxima/minima.
ใช้เมื่อใด: Solving or sketching a function when you want to find where its graph crosses or turns.
ขั้นตอน
Enter the function in TABLE mode, set the start, end and step, then read where the sign of \(y\) changes or where it peaks.
ข้อควรระวังในการสอบ: 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)
วัตถุประสงค์: Read the mean \(\bar{x}\) and standard deviation directly, and the gradient/intercept (and \(r\)) of a linear regression for bivariate data.
ใช้เมื่อใด: Any data-handling, statistics, or required-practical analysis question.
ขั้นตอน
Enter the data in STAT mode (1-VAR or A+BX), then recall \(\bar{x}\), \(\sigma\) or the regression coefficients.
ข้อควรระวังในการสอบ: 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)
วัตถุประสงค์: Keep full-precision intermediate values to avoid rounding errors.
ใช้เมื่อใด: Multi-step calculations where premature rounding loses the final accuracy mark.
ขั้นตอน
Use Ans, STO/RCL or the M+ memory to reuse the unrounded result of each step; round only the final answer.
ข้อควรระวังในการสอบ: 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)
วัตถุประสงค์: Use the built-in EQN/SOLVE mode to verify roots of quadratics or simultaneous equations you have already solved by algebra.
ใช้เมื่อใด: As a check only, after solving by hand.
ขั้นตอน
Enter the coefficients in EQN mode (or use SOLVE) and confirm they match your worked solution.
ข้อควรระวังในการสอบ: Allowed, but the calculator must be silent, non-graphical, non-programmable and free of stored content; always show the working the mark scheme requires.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 2The microscope in cell studies (Cell structure)
Failing to convert units (such as millimeters to micrometers) before calculating magnification or actual size.
วิธีหลีกเลี่ยง: Always measure your image in millimeters, multiply by 1000 to convert to micrometers, and then apply the magnification formula.
2highคะแนนที่เกี่ยวข้อง: 1Transport in mammals
Stating that arteries 'contract and relax' to withstand blood pressure fluctuations.
วิธีหลีกเลี่ยง: Clarify that elastic fibers in arteries stretch and recoil to maintain blood pressure, whereas smooth muscle contracts to cause vasoconstriction.
3mediumคะแนนที่เกี่ยวข้อง: 1Testing for biological molecules (Biological molecules)
Using imprecise, non-scientific terms like 'average' and 'amount' in practical and planning investigations.
วิธีหลีกเลี่ยง: Use standard scientific terms: 'mean' instead of 'average', 'volume' or 'concentration' instead of 'amount', and 'mean' instead of 'general trend'.
4highคะแนนที่เกี่ยวข้อง: 3Structure of transport tissues (Transport in plants)
Using shading, sketched lines, or drawing individual cells in low-power plan tissue diagrams during practical exams.
วิธีหลีกเลี่ยง: Draw only the tissue boundaries using a sharp HB pencil with clean, continuous, single lines and absolutely no shading.
5mediumคะแนนที่เกี่ยวข้อง: 1Cell membranes and transport (Biology (AS Level))
Describing active transport or facilitated diffusion without stating the direction of solute movement.
วิธีหลีกเลี่ยง: Always state from where to where the ions or molecules are moving (e.g., from the cytoplasm to the extracellular environment, or down a concentration gradient).
6highคะแนนที่เกี่ยวข้อง: 3Selection and evolution (Biology (A Level))
Failing to explicitly compare the calculated statistical value to the critical value in t-test or correlation questions.
วิธีหลีกเลี่ยง: State the critical value from the provided table at p = 0.05, specify the degrees of freedom, and explicitly state whether the calculated value is greater than or less than the critical value to accept or reject the null hypothesis.