Ch2: Characteristics of Life Flashcards
Organism
a living thing
Metabolism
The sum of all the chemical reactions in an organism
Continuity of life
Living things arise from other living things of the same type
Life
The possession of all the following characteristics: nutrition, excretion, response, reproduction, organisation
Organisation
Living things are composed of cells, tissues, organs and organ systems
Nutrition
The way organisms obtain and use food
Excretion
The removal of waste products of metabolism from the body
Response
The way in which all living things react to changes in their environment
Reproduction
The production of new individuals
Sexual reproduction
The union of two sex cells (gametes)
Asexual reproduction
Simple organisms split into two or more identical offspring