Characteristics, Classification & Features of Organisms (Cambridge (CIE) IGCSE Co-ordinated Sciences (Double Award): Biology): Flashcards
Exam code: 0654 & 0973
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Respiration
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Cards in this collection (12)
Respiration
The chemical reactions in cells that break down nutrient molecules and release energy for metabolism.
Excretion
The removal from organisms of the waste products of metabolism (chemical reactions in cells, including respiration), toxic materials, and substances in excess of requirements.
Sensitivity
The ability to detect and respond to changes in the internal or external environment.
Nutrition
The taking in of materials for energy, growth and development.
Growth
A permanent increase in size and dry mass.
The seven characteristics of living organisms can be remembered using the acronym MRS GREN: Movement, Respiration, , Growth, Reproduction, Excretion and Nutrition.
Sensitivity
Growth is defined as a permanent increase in size and .
dry mass
is an action by an organism, or part of an organism, causing a change of position or place.
Movement
Respiration releases from nutrient molecules for use in metabolism.
energy
What does the acronym MRS GREN stand for?
Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition.
Give an example of a waste product removed from the body by excretion.
Carbon dioxide (from respiration) and urea.
Define reproduction as a characteristic of living organisms.
The processes that make more of the same kind of organism.
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