Thirty multiple-choice items and five structured questions covering cells, nutrition, respiration, transport, excretion, movement, irritability, growth, reproduction and disease.
Lessons covered: B1 Cell Structure and Specialisation, B2 Diffusion, Osmosis and Active Transport, B3 Nutrition Types and Photosynthesis, B4 Food Tests and a Balanced Diet, B5 Digestion, Teeth and Enzymes, B6 Aerobic and Anaerobic Respiration, B7 Breathing, Gaseous Exchange and Smoking, B8 Transport Systems and the Human Heart, B9 Blood, Defence and Immunisation, B10 Transport in Plants: Xylem, Transpiration and Phloem, B11 Food Storage in Plants and Animals, B12 Excretion and the Kidney, B13 Movement, the Skeleton and Locomotion, B14 Irritability, Reflexes, the Brain and Drugs, B15 The Eye and the Skin, B16 Growth and Germination, B17 Reproduction in Humans and Sexual Health, B18 Reproduction in Flowering Plants, B19 Disease, the Mosquito and Disease Control
30 items covering the whole section. Choose the best answer for each, then check.
5 Paper 2 style questions (50 marks). Write your answers first, then reveal the mark scheme and tick the points you earned.
Question 1 [10 marks]
A student placed a lamp at different distances from a piece of pondweed and counted the bubbles of gas released per minute.
| Distance of lamp (cm) | 10 | 20 | 30 | 40 | 50 |
|---|---|---|---|---|---|
| Bubbles per minute | 48 | 30 | 15 | 8 | 5 |
(a) Describe the relationship between the distance of the lamp and the number of bubbles. [2]
(b) Explain the relationship. [2]
(c) State TWO variables that should be kept constant. [2]
(d) Write the word equation for photosynthesis. [2]
(e) Suggest ONE way to measure the gas produced more accurately than counting bubbles. [2]
Question 2 [10 marks]
A student eats a meal of rice, chicken and fried plantain.
(a) Name the enzyme in saliva and the product of its action on the rice. [2]
(b) Explain why pepsin stops working when it passes from the stomach into the duodenum. [2]
(c) Describe TWO ways in which the ileum is adapted for absorption. [4]
(d) A person whose gall bladder has been removed is advised to eat less fried food. Suggest why. [2]
Question 3 [10 marks]
The human heart and circulation transport oxygen around the body.
(a) Name the chamber of the heart that receives blood from the lungs. [1]
(b) Explain why the wall of the right ventricle is thinner than that of the left ventricle. [2]
(c) Describe how the structure of a capillary suits its function. [2]
(d) Explain how vaccination protects a child against measles. [4]
(e) Suggest how smoking reduces the amount of oxygen carried by the blood. [1]
Question 4 [10 marks]
The body must keep its temperature and its water content within narrow limits.
(a) On a cold night, describe TWO responses of the skin that reduce heat loss. [4]
(b) Explain why the urine of a healthy person contains no glucose. [2]
(c) Name the hormone that controls the amount of water reabsorbed by the kidney, and the gland that releases it. [2]
(d) Distinguish between excretion and egestion. [2]
Question 5 [10 marks]
Reproduction in plants depends on pollination, and human health depends on controlling disease vectors.
(a) Distinguish between pollination and fertilisation in flowering plants. [2]
(b) State TWO features of an insect-pollinated flower. [2]
(c) Name, in order, the FOUR stages of the life cycle of a mosquito. [2]
(d) Describe TWO methods of controlling the Aedes mosquito, each aimed at a DIFFERENT stage of its life cycle. [4]