Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

TopicSkillDifficulty

12 questions

SA-OB-GE-0011 markL1 FoundationCalculatorLungs

Gas exchange in the lungs takes place in the

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0121 markL1 FoundationCalculatorLungs

Limewater turns milky with

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0021 markL2 StandardCalculatorBreathing

When breathing in, the diaphragm

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0031 markL2 StandardCalculatorBreathing

Air enters the lungs because

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0041 markL2 StandardCalculatorLungs

Alveoli are efficient because they have

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0051 markL2 StandardCalculatorLungs

Compared with inspired air, expired air contains

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0061 markL2 StandardCalculatorLungs

The trachea is kept open by

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0071 markL2 StandardCalculatorExercise and smoking

Carbon monoxide in cigarette smoke

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0081 markL2 StandardCalculatorExercise and smoking

During exercise, breathing rate increases mainly because

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0092 marksL2 StandardCalculatorBreathing

A person takes

15

breaths per minute with

0.5\ \text{dm}^3

per breath. Calculate the volume of air breathed per minute.

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0101 markL2 StandardCalculatorExercise and smoking

Tar in cigarette smoke

Salam Academy Original Practice · Proposed mark scheme

SA-OB-GE-0111 markL3 ExamCalculatorBreathing

When breathing out normally,

Salam Academy Original Practice · Proposed mark scheme