Answer: The small intestine has villi and microvilli that increase surface area. The wall is thin for short diffusion distance. Each villus contains a capillary network that maintains a concentration gradient. Glucose is absorbed by active transport, amino acids by diffusion.

Example: Chemistry

Question: Describe and explain what happens when dilute hydrochloric acid is added to calcium carbonate.

Answer:

Word equation: Calcium carbonate + Hydrochloric acid → Calcium chloride + Carbon dioxide + Water
Symbol equation: CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
Fizzing occurs as CO₂ gas is released.

Example: Physics

Question: A car accelerates from rest to 20 m/s in 10 seconds. Calculate the acceleration.

Answer: Acceleration = Δv ÷ time = (20 – 0) ÷ 10 = 2 m/s².

➗ Mathematics

Example: Algebra

Question: Solve: 2x² + 5x – 3 = 0

Answer: Using quadratic formula → x = 0.5 or x = -3

Example: Geometry

Question: In a circle with radius 7 cm, calculate the area.

Answer: A = πr² = 3.14 × 49 = 153.86 cm²

📖 Humanities & Languages

Example: History

Question: How far do you agree that the Treaty of Versailles was too harsh on Germany? Explain your answer.

Answer: Agree: Harsh reparations, war guilt clause.
Disagree: Germany kept industries, wasn’t fully occupied.
Conclusion: Balanced judgment needed.

📝 Understanding Exam Questions

State → short factual answer.
Explain → give reasons, cause-effect.
Compare → show similarities/differences.
Evaluate/Discuss → give both sides, then conclusion.

📅 Effective Study Strategy

Morning → Science or Math (fresh brain).
Afternoon → Essay subjects (History, English).
Evening → Timed past paper practice.
Use flashcards, summaries, and active recall.

🧠 Exam Day Strategy

Sleep 7–8 hours before exam.
Read instructions carefully.
Divide time based on marks.
Attempt all questions (even partial answers earn marks).