1 Which of the following personal protective equipment is suitable for cleaning clothing immediately when it comes into contact with chemical substances? flag bookmark A Eyewash station B Safety shower C Wearing a lab coat D Wearing gloves T4 Chapter 1.1 Personal Protective Equipment A safety shower flushes chemicals off both skin and clothing immediately, providing the quickest whole-body rinse needed in this situation.
2 Diagram 1 shows the condition of a victim at the side of a swimming pool. What is the sign the victim is not breathing? flag bookmark A Cough B Unable to speak C No visible chest movement D Holding the neck with both hands T4 Chapter 2.1 Cardiopulmonary Resuscitation (CPR) A breathing person's chest rises and falls, so no visible chest movement indicates the victim is not breathing.
3 The following information shows the Body Mass Index (BMI) of an individual. > BMI = 29.9 kg m⁻² What is the risk on health will be experienced by the individual? flag bookmark A Decrease in body's defence against diseases B Having low blood pressure C Having diabetes mellitus D Heat stroke occurs T4 Chapter 3.4 Body Mass Index (BMI) BMI 29.9 is in the overweight range, which increases the risk of developing diabetes mellitus.
4 What is the importance of Green Technology in daily life? flag bookmark A Reducing carbon emissions B Generating more stable energy for industries C Reducing maintenance costs of power plants D Improving efficiency of power machines T4 Chapter 4.1 Environmental Sustainability Green technology helps lower daily carbon emissions, directly tackling climate change and improving environmental health. This makes reducing emissions its most important everyday benefit.
5 Diagram 2 shows a graph of the forest area of a state from 2018 to 2023. What is the Green Technology application that has been implemented by the state after 2020? flag bookmark A Increasing logging permit for the industrial sector B New areas opened for agriculture C Deforestation to produce furniture D Replanting trees T4 Chapter 4.4 Agriculture and Forestry Sector Forest area dropped until 2020, then rose from 2021 to 2023, indicating replanting trees.
6 Diagram 3 shows the genotypes of parent cats that have different fur colours. H represents the dominant allele for black fur while h represents the recessive allele for white fur. What percentage of kittens are born with white fur? flag bookmark A 25% B 50% C 75% D 100% T4 Chapter 5.2 Inheritance A cross between Hh and hh produces Hh and hh offspring in a 1:1 ratio. Only the hh genotype has white fur, so 50% of kittens are white.
7 Which of the following is an example of chromosome mutation? flag bookmark A Thalassemia B Colour blindness C Sickle cell anaemia D Klinefelter syndrome T4 Chapter 5.3 Mutation Klinefelter syndrome results from an extra X chromosome (XXY), making it a chromosome mutation. Thalassemia, colour blindness, and sickle cell anaemia are all gene mutations, not chromosome mutations.
8 Diagram 4 shows a type of animal. Which of the following statements is correct about the animal? flag bookmark A Has an exoskeleton B Has an endoskeleton C Supported by hydrostatic skeleton D Its body is made up of chitin layer T4 Chapter 6.1 Support, Movement and Growth in Animals The snake is a vertebrate, so its body is supported by an internal skeleton made of bones.
9 Study the following statement. > The male teenager usually looks bigger compared to the female teenager. Which of the following statements best explains the difference between these teenagers? flag bookmark A The growth rate of the male teenager is slowing down B The female teenager undergoes rapid growth C At the age of 16-18 years, the body of the female teenager will shrink and become smaller D At the age of 16-18 years, the growth rate will begin to decrease for the female teenager and will stop eventually T4 Chapter 6.2 Human Movement and Growth At 16–18, the female growth rate slows and eventually stops, while the male continues growing, so he appears bigger.
10 Diagram 5 shows an endocrine gland. What is Z? flag bookmark A Ovary B Thyroid gland C Adrenal gland D Pituitary gland T4 Chapter 7.1 Human Endocrine System The butterfly-shaped gland surrounding the trachea in the neck is the thyroid gland. Z labels its lobe.