Section A: Biology (20 Marks)
1. (a) Name the two types of cell division and briefly explain the difference between them. (4
marks)
1. (b) Describe the function of mitochondria in a cell. (2 marks)
2. (a) Define the term "enzyme" and explain how they function in biological processes. (4 marks)
2. (b) What factors can affect enzyme activity? (2 marks)
3. A student investigates the effect of temperature on the rate of enzyme activity using a catalase
enzyme. They set up experiments at different temperatures. What safety precautions should the
student take? (3 marks)
4. Explain the process of photosynthesis. Write the balanced chemical equation for
photosynthesis. (5 marks)
Section B: Chemistry (20 Marks)
5. (a) Define the term "atom" and explain the structure of an atom, including the location of
protons, neutrons, and electrons. (4 marks)
5. (b) What is the difference between an ionic bond and a covalent bond? Give one example of
each. (4 marks)
6. Explain the term "acid-alkali neutralization" and give the chemical equation for the
neutralization of hydrochloric acid with sodium hydroxide. (4 marks)
7. (a) What is meant by the "periodic table" and how is it organized? (3 marks)
7. (b) Name two elements that are in Group 1 of the periodic table. (2 marks)
8. The reaction between zinc and hydrochloric acid produces hydrogen gas. Write a balanced
chemical equation for this reaction. (3 marks)
Section C: Physics (20 Marks)
9. (a) Define "force" and state its unit of measurement. (2 marks)
9. (b) A 10 kg object is placed on a surface. Calculate the weight of the object on Earth (g = 10
N/kg). (3 marks)
10. (a) What is the difference between scalar and vector quantities? Give two examples of each.
(4 marks)
10. (b) What is the formula for calculating speed, and what is its unit? (2 marks)
1. (a) Name the two types of cell division and briefly explain the difference between them. (4
marks)
1. (b) Describe the function of mitochondria in a cell. (2 marks)
2. (a) Define the term "enzyme" and explain how they function in biological processes. (4 marks)
2. (b) What factors can affect enzyme activity? (2 marks)
3. A student investigates the effect of temperature on the rate of enzyme activity using a catalase
enzyme. They set up experiments at different temperatures. What safety precautions should the
student take? (3 marks)
4. Explain the process of photosynthesis. Write the balanced chemical equation for
photosynthesis. (5 marks)
Section B: Chemistry (20 Marks)
5. (a) Define the term "atom" and explain the structure of an atom, including the location of
protons, neutrons, and electrons. (4 marks)
5. (b) What is the difference between an ionic bond and a covalent bond? Give one example of
each. (4 marks)
6. Explain the term "acid-alkali neutralization" and give the chemical equation for the
neutralization of hydrochloric acid with sodium hydroxide. (4 marks)
7. (a) What is meant by the "periodic table" and how is it organized? (3 marks)
7. (b) Name two elements that are in Group 1 of the periodic table. (2 marks)
8. The reaction between zinc and hydrochloric acid produces hydrogen gas. Write a balanced
chemical equation for this reaction. (3 marks)
Section C: Physics (20 Marks)
9. (a) Define "force" and state its unit of measurement. (2 marks)
9. (b) A 10 kg object is placed on a surface. Calculate the weight of the object on Earth (g = 10
N/kg). (3 marks)
10. (a) What is the difference between scalar and vector quantities? Give two examples of each.
(4 marks)
10. (b) What is the formula for calculating speed, and what is its unit? (2 marks)
