EduNinja

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 Nervous and hormonal coordination

2.84 Tropic responses

2.85 Auxin and phototropism

2.86 Homeostasis

2.87 Central nervous system

2.88 Skin and temperature control

2.89 Vasodilation and vasoconstriction

2.90 Insulation, sweating and shivering

2.91 Glucose homeostasis

2.94 Pupil reflex

2.95B Accommodation

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)

IGCSE Biology 2.82 Stimulus, receptor and effector Topic Practice

2.82 Stimulus, receptor and effector

Understand that a co-ordinated response requires a stimulus, a receptor and an effector.

0 selected