1.1) Characteristics of living organisms

1.1) Characteristics of living organisms


Movement: is an action by an organism or part of an organism causing a change of position or place.

Respiration: describes the chemical reactions in cells that break down nutrient molecules and release energy for metabolism.

Sensitivity: is the ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.

Growth: is a permanent increase in size and dry mass by an increase in cell number or cell size or both.

Reproduction: is the processes that make more of the same kind of organism.

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

Nutrition: is the taking in of materials for energy, growth and development. Plant require light, CO2, H2O and ions. Animals need organic compounds and ions and H2O.

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