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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

2.80 Responses to environmental change

2.81 Homeostasis

2.82 Stimulus, receptor and effector

2.83 Plant responses to stimuli

2.84 Tropic responses

2.85 Auxin and phototropism

2.86 Nervous and hormonal communication

2.87 Central nervous system

2.88 Nerve impulses and rapid responses

2.89 Neurotransmitters at synapses

2.90 Simple reflex arc

2.91 Eye structure and function

2.92 Eye focusing and light responses

2.93 Skin and temperature regulation

2.94 Adrenaline, insulin and reproductive hormones

2.95B ADH, FSH and LH

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

5 Geometry and trigonometry

Question Bank/IGCSE Edexcel Biology/2 Structure and functions in living organisms/(j) Co-ordination and response/2.89 Neurotransmitters at synapses

Edexcel IGCSE Biology 2.89 synapses and neurotransmitters

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