Summative Practice 9 (Question 3) – Form 4 Science (KSSM) Chapter 9

Question 3:Superconductor alloys have many uses now and in the future. Photograph 3 shows one of the uses of superconductor alloy in Maglev trains.(a) How is a superconductor alloy used in the construction of the Maglev train?(b) Give two other uses of superconductor alloys in daily life.(c) In your opinion, can the superconductor alloy be … Read more

Summative Practice 10 (Question 3 & 4) – Form 4 Science (KSSM) Chapter 10

Question 3:Photograph 2 shows fruits that are rich in antioxidants.(a) What is meant by antioxidants?(b) Explain the role of antioxidants in the human body.(c) Give three types of antioxidants and their natural resources. Answer:(a) Antioxidants are chemical compounds that can be obtained from chemical synthesis or natural plants. When antioxidants react with free radicals, more … Read more

Formative Practice 10.3 – Form 4 Science (KSSM) Chapter 10

Question 1:What is meant by antioxidant substances? Answer:Antioxidant are chemical compounds that can be obtained from chemical synthesisor natural plants. Antioxidants are needed  by our body to slow down or to stop the oxidation process. Question 2:Give three examples of antioxidant substances found in food. Answer:Beta carotene/ Lutein/ Lycopene/ Vitamin C/ Vitamin E

Formative Practice 10.4 – Form 4 Science (KSSM) Chapter 10

Question 1:What is meant by active ingredients in health products? Answer:Active ingredients are specific components in a product that have effects on the cure or prevention of diseases. Question 2:Give two reasons for the use of health products in Malaysia. Answer:Intake of unbalanced diet/ Lack of nutrients in food served/ For normal growth and wellness/ … Read more

Formative Practice 10.2 – Form 4 Science (KSSM) Chapter 10

Question 1:What are free radicals? Answer:Free radicals are atoms or molecules that lack one electron. Thus, making the atoms or molecules unstable, reactive and tend to attack other atoms or other molecules. Question 2:Explain how free radicals are formed. Answer:Free radicals are formed from the oxidation process that happens in the body due to internal … Read more

Formative Practice 10.1 – Form 4 Science (KSSM) Chapter 10

Question 1:State three methods of medicine currently in practice. Answer:Traditional medicine, modern medicine, complementary medicine Question 2:Name three types of modern medicine and give examples. Answer:• Analgesic: aspirin/codeine/paracetamol• Antibiotic: penicillin and streptomycin• Psychotherapeutic:− Stimulant: amphetamine− Antidepressant: imipramine / amitriptyline− Antipsychotic: tranquiliser / barbiturate Question 3:Lai Yee and her family went for a vacation at Pulau … Read more