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Science Quiz

Organism A living thing
Nutrition Process in which an organism takes in food and breaks it down so it can be used for life processes
Heterotroph Organism that can’t make its own for and must eat other organisms (example: animals)
Autotroph Organism that can make its own food (example: plants, some bacteria)
Ingestion Taking in food from the environment
Digestion The breaking down of complex food materials into forms the cells can use
Photosynthesis Process in which plants make their own food (sugar) using the energy from the sun, water (H2O) and carbon dioxide (CO2)
Synthesis Process in which simple substances are combined chemically to form complex substances (examples: photosynthesis, chemo-synthesis, protein synthesis)
Transport Movement and distribution of materials within an organism
Respiration Process in which energy is released from food during complex chemical reactions (requires oxygen – this is how our respiratory system gets its name)
Excretion Process of removing solid, liquid and gaseous wastes produced by metabolism
Growth Increase in size
Reproduction Process by which organisms produce new organisms of their own kinds
Stimulus Change in the internal or external environment that causes a response
Response Reaction that occurs due to a change in internal or external environment
Regulation Controlling and maintaining internal activities
Metabolism The sum total of all the reactions occurring within the cells of an organism
Homeostasis Maintaining a stable balanced internal environment
Created by: LaxyLucy7



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