B1 - Characteristics of living organisms Flashcards
What is movement?
An action by an organism causing a change of position or place.
What is respiration?
The chemical reactions in cells that break down nutrient molecules and release energy for metabolism.
What is sensitivity?
The ability to detect or sense stimuli in the internal or external environment and to make appropriate responses.
What is growth?
A permanent increase in size and dry mass by an increase in cell number or cell size or both.
What is reproduction?
The processes that make more of the same kind of organism.
What is excretion?
Removal from organisms of the waste products of metabolism (chemical reactions in cells including respiration), toxic materials, and substances in excess of requirements.
What is nutrition?
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.
