An evidence-based masterclass on passing IB Diploma Programme Biology, containing a deep dive into the latest 2025 paper blueprints, common pitfalls to avoid, and exact techniques for securing maximum marks in Papers 1A, 1B, and 2.
อ่าน 3 นาทีอัปเดตเมื่อ: 21 มิ.ย. 2569
ภาพรวมข้อสอบ
จำนวนฉบับ
3
คะแนนเต็ม
155
เวลาสอบ
4ชม. 30นาที
ประเภทคำถาม
4
ฉบับ
เวลา
คะแนน
จำนวนข้อ
น้ำหนักคะแนน
ประเภทคำถาม
Paper 1A
1ชม. 20นาที
40
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Paper 1B
40นาที
35
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—
Paper 2
2ชม. 30นาที
80
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เกณฑ์เกรด
7654321
ข้อกำหนดเครื่องคิดเลข
A graphic display calculator (GDC) from the IB-approved list is required for most Mathematics and Sciences papers and must be set to examination mode. Note that some papers do not permit a calculator (for example Mathematics Paper 1 and the multiple-choice Sciences Paper 1).
AO1: AO1: Demonstrate knowledge and understanding of scientific facts, concepts, and terminology.
AO2: AO2: Apply scientific facts, concepts, and terminology to explain phenomena and solve problems.
AO3: AO3: Formulate, analyze, and evaluate scientific hypotheses, research questions, methodologies, and data.
วัตถุประสงค์: Plot a function to read its roots (zeros), points of intersection, and maxima/minima.
ใช้เมื่อใด: Checking solutions, sketching, or solving where an analytic method is hard.
ขั้นตอน
Graph the function(s) and use the built-in zero, intersect and maximum/minimum tools.
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Numerical equation solver
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Solve an equation or find a variable numerically when an algebraic route is long or implicit.
ใช้เมื่อใด: Iterative or implicit equations, or to confirm an algebraic solution.
ขั้นตอน
Use the equation/zero solver, entering the equation and a sensible starting estimate.
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Numerical integration & differentiation
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: Evaluate a definite integral \(\int_a^b f(x)\,dx\) or a gradient \(f'(x)\) at a point.
ใช้เมื่อใด: Checking calculus answers, or where only a numerical value is needed.
ขั้นตอน
Use the GDC's numeric integral / derivative function with the limits or the point.
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
Statistics & probability distributions
Graphical calculator / GDC (exam mode)
วัตถุประสงค์: 1-var/2-var statistics, linear regression, and cumulative binomial / normal / Poisson probabilities without tables.
ใช้เมื่อใด: Statistics questions and hypothesis tests.
ขั้นตอน
Enter data in the statistics editor, or use the distribution menu (binomial cdf, normal cdf, …).
ข้อควรระวังในการสอบ: Use a GDC from the IB-approved list in examination mode. Some papers do not permit a calculator. Always show your reasoning.
ข้อผิดพลาดที่พบบ่อย
1highคะแนนที่เกี่ยวข้อง: 1Cell respiration
Writing that glucose 'produces' energy during cell respiration.
วิธีหลีกเลี่ยง: Describe respiration as the chemical oxidation of glucose to yield ATP (or chemical energy stored in ATP).
2highคะแนนที่เกี่ยวข้อง: 2Ecology
Writing separate, sequential paragraphs of descriptions when a question asks to 'compare and contrast' datasets or biological features.
วิธีหลีกเลี่ยง: Use explicit comparative terms side-by-side (such as 'whereas', 'both', 'higher than', 'lower than') to construct direct comparisons.
3highคะแนนที่เกี่ยวข้อง: 1Cell structure
Losing calculation marks for cell size or magnification due to incorrect unit conversions (such as dividing millimeters on paper directly by micrometers).
วิธีหลีกเลี่ยง: Always convert all measurements to the same unit (ideally micrometers, \(\mu\text{m}\), where 1 mm = 1000 \(\mu\text{m}\)) before dividing.
4mediumคะแนนที่เกี่ยวข้อง: 2Defence against disease
Believing that antibiotics can kill or target viruses.
วิธีหลีกเลี่ยง: Explain that viruses lack their own metabolic pathways, cell walls, or 70S ribosomes, which are the targets of antibiotic action.
5highคะแนนที่เกี่ยวข้อง: 1Cell respiration
Using the vague term 'amount' or 'quantity' when identifying independent or dependent variables in experimental descriptions.
วิธีหลีกเลี่ยง: Use exact scientific terms such as 'mass', 'volume', or 'concentration', and always state the associated units.
6mediumคะแนนที่เกี่ยวข้อง: 2Water
Drawing a water molecule diagram without the V-shape or omitting partial dipoles.
วิธีหลีกเลี่ยง: Draw the water molecule with a clear V-shape angle, label \(\delta^-\). on the oxygen atom, \(\delta^+\) on both hydrogen atoms, and draw dashed lines between oxygen and hydrogen of adjacent molecules for hydrogen bonds.