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Life

The Characteristics of Life

QuestionAnswer
What are the 7 characteristics of life? 1: Organisation. 2: Nutrition. 3: Respiration. 4: Excretion. 5: Sensitivity. 6: Reproduction. 7. Homeostasis
Organisation This is the structured plan which improves efficiency and increases the chances of survival. eg: cell > tissue > organ > organ system > organism.
Nutrition All living things take in food from their environment. Autotrophs make their own food. Heterotrophs eat plants or animals.
Excretion This is the removal of metabolic waste made by the body. eg sweat, carbon dioxide and urine
Sensitivity All living organisms respond to their environment by taking in information and reacting accordingly.
Homeostasis Homeostasis is the maintenance of a constant internal environment eg: temperature, pH, carbon dioxide levels, glucose levels.
Respiration Respiration is the release of energy from food. There are 2 types: aerobic and anaerobic
Reproduction All living things pass on information, genetic or otherwise, to a new generation.
What is a cell? A cell is the basic unit of life that displays all the characteristics of life
Tissue A tissue is a group of cells with a common function working together.
Organ An organ is a group of tissues with a common function working together
Organ system An organ system is a group of organs working together
Organism An organism is the result of several organ systems working together
Created by: cbsbiology