Month: August 2022

Biology Paper 1 (231/1) 1 Name two kidney diseases. (2 marks) 2 (a) Write the dental formula of an adult human. (1 mark) (b) Name two dental diseases. (2 marks) 3 Give three reasons for classifying organisms. (3 marks) 4 State one use for each of the following Read More …

Biology Paper 3 (231/3) 1.(a) The photograph below shows the inner surface of the upper lefi side of the rib cage. (i) Name the bone covered by the fatty tissue labelled K. (l mark) (ii) Explain the role of the part labelled Read More …

Biology Paper 2 (231/2) SECTION A (40 marks) Answer all the questions in this section in the spaces provided 1 (a) The diagram below represents a plant in the division Bryophyta. (i) Name the parts labelled B and D. (2 Read More …

 Biology Paper 1 (231/1) 1 (a) What is meant by the term wilting? (1 mark) (b) Explain how an increase in temperature affects the rate of active transport. 2 The diagram below represents a cell as seen under an electron Read More …

 Biology Paper 3 (231/3) 1 (a) You are provided with solutions labelled Q and R, a substance labelled D and a delivery tube fitted with a rubber bung/cork. I Label solution Q as lime water. ll Label solution R as 10% sugar solution. III Add substance D to the 10% sugar Read More …

Biology Paper 2 (231/2) SECTION A (40 marks) Answer all the questions in this section in the spaces provided. 1 (a)State four characteristics of fruits dispersed by animals. (4 marks) (b)State two roles of each of the following hormones in menstruation: (i) luteinising hormone; (2 marks) Read More …

.1 Biology Paper 1 (231/1) Answer all the questions. 1 State the importance of each of the following in living organisms: (a) nutrition(1 mark) (b) excretion.(1 mark) 2 (a) What is meant by the term seed dormancy?(1 mark) (b) State three causes of seed Read More …

Paper 3 (PRACTICAL) 1 Using the pictures of animals provided below, complete the construction of the dichotomous key by filling the blank spaces. (13 marks) 1. (a) Animals with a backbone………………………………… go to 2 (b)Animals without a backbone………………………………. 2. (a) Read More …

SECTION A (40 marks) Answer all the questions in this section in the spaces provided. 1. The diagram below illustrates a blood capillary surrounding a structure for gaseous exchange in human beings. (a) Name the gaseous exchange structure.(1 mark) ……………………….. (b) Read More …

231/1 BIOLOGY Paper 1 Answer all the questions in the spaces provided. 1. (a) What is meant by the term binomial nomenclature? (1 mark) ……………………………… (b) State two guidelines that should be followed when typing scientific names.(2 marks) ……………………………. 2. During a lesson, students Read More …