1 Which of the following is an example of category A biological waste? flag bookmark A Blood B Syringe C Gloves D Laboratory animals T4 Chapter 1.2 Disposal of Waste Category A biological waste is sharp waste, such as syringes, needles and scalpel blades, which must go into a sharps bin. Blood, gloves and laboratory animals are other types of biological waste.
2 Which of the following is a cause of a situation that requires CPR? flag bookmark A Fever B Choking C Heart attack D High blood pressure T4 Chapter 2.1 Cardiopulmonary Resuscitation (CPR) CPR is needed when the heart stops pumping and the victim stops breathing. A heart attack can stop the heart, so CPR is used to keep blood flowing. Choking is first handled with the Heimlich manoeuvre.
3 Diagram 1 shows a step in the Heimlich manoeuvre. What is the purpose of this step? flag bookmark A To prevent the victim from fainting B To calm the victim from anxiety C To increase the pressure in the lungs D To produce artificial blood circulation T4 Chapter 2.2 Heimlich Manoeuvre The upward thrusts on the abdomen push the diaphragm up, which raises the pressure in the lungs. This pressure forces air out and pushes out the object blocking the airway.
4 The following information describes thermometer X. - Measures body temperature - Measures temperature in the range of 35°C to 42°C What is thermometer X? flag bookmark A Clinical thermometer B Rectal thermometer C Laboratory thermometer D Infrared thermometer T4 Chapter 3.1 Body Temperature A clinical thermometer is used to measure body temperature and its scale only covers 35°C to 42°C, the range of human body temperature.
5 Ahmad's blood pressure reading is 161/105 mmHg. What is the classification of his blood pressure reading? flag bookmark A Normal B At risk C High blood pressure stage 1 D High blood pressure stage 2 T4 Chapter 3.3 Blood Pressure A systolic reading of 160 mmHg or more, or a diastolic reading of 100 mmHg or more, is stage 2 high blood pressure. 161/105 mmHg is above both limits.
6 Ali's body mass is 82 kg while his height is 1.65 m. BMI = Body mass (kg) ÷ [Height (m)]² Calculate Ali's BMI. flag bookmark A 24.53 B 30.12 C 36.24 D 49.7 T4 Chapter 3.4 Body Mass Index (BMI) BMI = 82 ÷ (1.65 × 1.65) = 82 ÷ 2.7225 = 30.12.
7 The following information shows the characteristics of an alternative energy. - A renewable energy - The main energy source in the world to generate electricity What is the energy? flag bookmark A Hydro energy B Solar energy C Wind energy D Geothermal energy T4 Chapter 4.2 Energy Sector Hydro energy from flowing water is renewable, and hydroelectric power is the largest renewable source of electricity in the world.
8 Massive forest exploration is one of the socioscientific issues in the agriculture and forestry sector. How can we overcome this issue? flag bookmark A Replanting trees B Energy efficiency C Use of biofuel D Practising the 5R concept T4 Chapter 4.4 Agriculture and Forestry Sector Clearing large areas of forest removes trees, so replanting trees directly restores the forest cover that was lost.
9 Which of the following is the chromosome content in the somatic cells of a male with Klinefelter syndrome? flag bookmark A 44 + XO B 44 + XX C 44 + XY D 44 + XXY T4 Chapter 5.3 Mutation Klinefelter syndrome happens in males with an extra X chromosome, so each body cell has 44 autosomes plus XXY (47 chromosomes).
10 Razi and Siti are a couple who can roll their tongues, and each has the genotype Bb. What is the probability that their children can roll their tongues? flag bookmark A 25% B 50% C 75% D 100% T4 Chapter 5.2 Inheritance Bb × Bb gives BB, Bb, Bb and bb. Three out of four children have at least one dominant B, so 75% can roll their tongues.