Living Organisms Flashcards
Movement
An action by an organism/part of an organism that causes a change of position or place.
Reproduction
The process that makes more of the same kind of organism
Sensitivity
The ability to detect or sense changes in the environment and respond to them
Homeostasis
The maintenance (balance) of a constant internal environment to provide the best conditions inside cells for all the reactions of life to take place. 🥵🥶
Growth
A permanent increase in size by an increase in cell number or cell size or both
Respiration
A chemical reaction that releases energy from glucose
Glucose + oxygen -> carbon dioxide + water + energy
Excretion
The removal of waste:
- Toxic materials
- Waste products of metabolism
- Excess substances from organisms
Egestion is the removal of undigested food as faeces
Nutrition
The process by which living organisms obtain food
Define Autotrophic
Obtaining energy from inorganic sources eg light
Define Heterotrophic
Obtaining energy directly or indirectly from the other organisms
Are viruses living?
No, without a cell they can’t do anything
