Define the terms:
1 Movement:

As an action by an organism or
part of an organism causing a change of
position or place

2 Respiration:

As the chemical reactions in cells
that break down nutrient molecules and
release energy for metabolism

3 Sensitivity

As the ability to detect or
sense stimuli in the internal or external
environment and to make appropriate
responses

4 Growth

As a permanent increase in size and
dry mass by an increase in cell number or cell
size or both

5 Excretion

As removal from organisms of the
waste products of metabolism (chemical
reactions in cells including respiration),
toxic materials, and substances in excess of
requirements

6 Nutrition

As taking in of materials for energy,
growth and development; plants require
light, carbon dioxide, water and ions; animals
need organic compounds and ions and
usually need water

7 reproduction

As the processes that make
more of the same kind of organism

	Creado por Chaseca M hace casi 4 años

First unit and first lesson in the syllabus for IGCSE in Biology. Characteristics of living organisms