quiz

• The human respiratory system consists of the following parts: P, Q, R, and L.
• The structure that supports the wall of Q is not specified in the diagram.
• The function of this structure is not specified in the diagram.
• During the process of inhalation, air travels through the following pathway: P, Q, R, L, M, and M.
• In the alveolus, blood P and gas R diffuse, and blood Q and gas R exchange gases.
• The alveolus functions efficiently due to two characteristics: its ability to carry out diffusion and its large surface area.
• The inhalation and exhalation process can be demonstrated using a model, where parts such as L, M, and M4 can be labeled.
• The heart consists of three chambers: P, Q, and R, and the part labelled R has a specific function.
• The human blood circulatory system consists of blood vessels P and S, and the functions of R and Q are specified in the diagram.
• Blood vessels M and N can be compared based on their cross-section, with blood vessel M carrying oxygenated blood.
• A person with blood group O is known as a universal donor.
• Diagram 7 shows a pack of cigarettes.
• Blood can be donated safely once in two or three months, depending on health status and blood haemoglobin and iron levels.
• Donating blood reduces the risk of heart disease and protects against developing cancer.
• One harmful effect for two chemicals stated in (i) is not specified in the text.
• The study recommended that health education programmes should be started earlier in school.
• About 42% of the smokers wished to stop smoking and only 1% of the non smokers intended to smoke in the future.
• The change in the blood cells and the condition of patient after the blood transfusion are not specified in the text.
• The effects of smoking on the respiratory system and the environment are not specified in the text.
• Four harmful chemicals which are found in cigarette smoke are not specified in the text.
• 32.8% of students had been initiated to smoking and the mean age of initiation was 13.3 years.
• The benefits of donating blood to a donor’s health are not specified in the text.
• A pint of blood group A is transfused into a patient with blood group O.
• A questionnaire on smoking habits was administered to 4106 Form 4 school children in Kuala Lumpur, with 2099 boys and 2007 girls, and their mean age was 16.1 years.
• Most of the smokers and occasional smokers were boys.
• Donating blood helps burn calories and can aid in body weight control measures.