Characteristics of Living Organisms (MRS GREN) - Cambridge IGCSE Co-ordinated Sciences (Double Award): Biology

Vocabulary flashcards covering the key characteristics of living organisms (Movement, Respiration, Nutrition, Sensitivity, Growth, Reproduction, Excretion) and the MRS GREN mnemonic.

Movement

Actions that cause a change in the position or location of an organism.

Respiration

The chemical reactions that release energy from nutrients inside living cells; energy fuels metabolism.

Nutrition

The intake and use of nutrients for energy, growth and development; plants need light, CO2, water and minerals; animals need organic compounds, ions and water.

Sensitivity

The ability to sense stimuli in the internal or external environment and respond appropriately.

Growth

Permanent increase in size and dry mass, due to an increase in cell number, cell size, or both.

Reproduction

The production of offspring, increasing the number of the same kind of organism.

Excretion

The removal of toxic substances, waste products of metabolism, and substances in excess from an organism.

MRS GREN

Mnemonic for Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition; used to remember the seven characteristics of living organisms.