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.
อ่าน 6 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
3
คะแนนเต็ม
140
เวลาสอบ
4ชม. 30นาที
ประเภทคำถาม
3
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1 Multiple Choice
1ชม. 15นาที
40
40
31%
Multiple Choice
Paper 2 AS Level Structured Questions
1ชม. 15นาที
60
6
46%
Structured Questions
Paper 3 Advanced Practical Skills 2
2ชม.
40
2
23%
Practical Skills
เกณฑ์เกรด
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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 (40%)
AO2: AO2: Handling information and solving problems (40%)
AO3: AO3: Experimental skills and investigations (20%)
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: 1Cell membranes and transport (Biology (AS Level))
Using the general term 'cell membrane' instead of the precise 'cell surface membrane' or 'plasma membrane'.
วิธีหลีกเลี่ยง: 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.
2highคะแนนที่เกี่ยวข้อง: 2The microscope in cell studies
Failing to convert millimeter measurements to micrometers during magnification calculations, leading to answers off by a factor of 1000.
วิธีหลีกเลี่ยง: 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).
3mediumคะแนนที่เกี่ยวข้อง: 1Transport of oxygen and carbon dioxide (Transport in mammals)
Omitting the word 'ion' when discussing physiological shifts, such as chloride or hydrogen carbonate movements.
วิธีหลีกเลี่ยง: Specifically state 'chloride ions' or 'hydrogencarbonate ions' to satisfy both scientific and chemical precision requirements.
4highคะแนนที่เกี่ยวข้อง: 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.
วิธีหลีกเลี่ยง: 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.
Believing that penicillin digests or breaks existing cross-links in mature bacterial cell walls.
วิธีหลีกเลี่ยง: 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.
6mediumคะแนนที่เกี่ยวข้อง: 1The gas exchange system
Confusing the physiological function of smooth muscle with elastic tissue/fibres in airways.
วิธีหลีกเลี่ยง: 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.