1 Diagram 1 shows a fire extinguisher. What type of fire extinguisher is shown in the diagram above? flag bookmark A Water B Foam C Dry powder D Carbon dioxide T4 Chapter 1.3 Fire Extinguishers The label on the fire extinguisher is red. By the label colour code, red is a water fire extinguisher (foam is cream, carbon dioxide is black and dry powder is blue). A water extinguisher is used for fires of flammable solids such as paper, wood and cloth.
2 Diagram 2 shows a man in an emergency situation. If the man is alone at home and is choking on food to the point of difficulty breathing, what is the first step to take to help himself? flag bookmark A Get out of the house and ask a neighbour for help B Clasp both hands in the middle of the victim's chest C Place the hands between the navel and below the ribs D Bend the body towards the chair and push the abdomen in and up T4 Chapter 2.2 Heimlich Manoeuvre A choking person who is alone can perform the Heimlich Manoeuvre on himself by bending over the back of a chair and pushing the abdomen in and up, which forces the food out of the airway.
3 Diagram 3 shows the blood pressure reading for an individual. What is the blood pressure category? flag bookmark A Optimum B Normal C At risk D High blood pressure T4 Chapter 3.3 Blood Pressure Blood pressure categories: optimum below 120/80 mmHg, normal 120–129/80–84 mmHg, high normal 130–139/85–89 mmHg and high blood pressure 140/90 mmHg and above. A reading of 125/83 mmHg is in the normal range.
4 Diagram 4 shows the green transport mode. Based on Diagram 4, what does X represent? flag bookmark A Bicycle B Motorcycle C Car D Van T4 Chapter 4.5 Transportation Sector In the green transport hierarchy, the most preferred modes are at the bottom: walking (pedestrian) first, then cycling, then public transport. So X is the bicycle.
5 Diagram 5 shows the inheritance of height trait in pea plants. Which of the following is the correct ratio of tall to dwarf for the phenotype of the offspring? flag bookmark A 1:2 B 1:3 C 2:2 D 3:1 T4 Chapter 5.2 Inheritance Tt x Tt gives offspring TT : Tt : tt = 1 : 2 : 1. TT and Tt are tall and tt is dwarf, so the ratio of tall to dwarf is 3 : 1.
6 Which of the following is an example of a discontinuous variation? flag bookmark A Weight B Height C Blood group D Intelligence T4 Chapter 5.5 Variation Blood group is a discontinuous variation because a person belongs to one of the distinct groups A, B, AB or O with no intermediate forms. Weight, height and intelligence show continuous variation.
7 Study the statement below. > Practitioners of complementary medicine related to the diagnosis and treatment of mechanical disorders of the muscle system, skeleton and backbone. Which of the following careers is related to the statement above? flag bookmark A Orthopedic specialist B Chiropractor C Physiotherapist D Ophthalmologist T4 Chapter 10.1 Traditional Medicine, Modern Medicine and Complementary Medicine A chiropractor is a complementary medicine practitioner who diagnoses and treats mechanical disorders of the muscles, skeleton and spine, mainly through manipulation of the spine.
8 Diagram 6 shows a type of woody plant. What is the characteristic of the support? flag bookmark A Supported by water pressure in the plant cells B Support plants living in swamps C Roots grow from stems or branches into the soil D Get supported by spreading on the ground T4 Chapter 6.3 Support, Growth and Stability in Plants Diagram 6 shows a mangrove tree with prop roots. Prop roots grow from the stem or branches down into the soil to support the plant in soft, muddy swamp soil. The answer scheme gives B (support plants living in swamps).
9 Diagram 7 shows an endocrine gland. What is R? flag bookmark A Pancreas B Pituitary gland C Thyroid gland D Adrenal gland T4 Chapter 7.1 Human Endocrine System R points to the pituitary gland, a small gland at the base of the brain that controls many other endocrine glands.
10 Which of the following is the effect of drug and alcohol abuse on physical and mental health? flag bookmark A Hormonal imbalance B Unclear speech C Liver cirrhosis D Slow reflex action T4 Chapter 7.2 Disruptions to Body Coordination Drug and alcohol abuse affects the nervous system, causing unclear speech, slow reflexes and poor coordination. The answer scheme gives C (liver cirrhosis), a common physical effect of long-term alcohol abuse.