Edexcel IGCSE Biology 2i Order of Magnitude Calculations Topic Practice

Pearson Edexcel International GCSE Biology (4BI1)

1 The nature and variety of living organisms

(a) Characteristics of living organisms

(b) Variety of living organisms

2 Structure and functions in living organisms

(a) Level of organisation

(b) Cell structure

(c) Biological molecules

(d) Movement of substances into and out of cells

(f) Respiration

(g) Gas exchange

(j) Co-ordination and response

3 Reproduction and inheritance

(a) Reproduction

(b) Inheritance

4 Ecology and the environment

(a) The organism in the environment

(b) Feeding relationships

(c) Cycles within ecosystems

(d) Human influences on the environment

5 Use of biological resources

(a) Food production

(b) Selective breeding

(c) Genetic modification (genetic engineering)

6 Experimental skills

(a) Problem-solving and application

(b) Investigation planning and methods

(c) Observations, measurements and variables

(d) Analysis, communication and evaluation

7 Mathematical skills

1 Arithmetic and numerical computation

2 Handling data

2A Significant figures

2B Arithmetic mean

2D Frequency tables, diagrams and histograms

2E Sampling scientific data

2F Simple probability

2G Mode and median

2H Scatter diagrams

2I Order-of-magnitude calculations

5 Geometry and trigonometry

Question Bank/IGCSE Edexcel Biology/7 Mathematical skills/2 Handling data/2I Order-of-magnitude calculations

Question typeDifficulty