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Biology key terms

QuestionAnswer
Organism All living things
Biogenesis All livings things are produced by another living thing
Biosphere All the places on the earth that support living things
Biodiversity The variety of living things in an area
Continuity of life Living things of the same type reproduce over generations
Characters of life: 1) cellular basis All living things are made up of cells
Biomolecules The chemicals used by organisms
Unicellular Single-cell organisms. Eg: yeast, bacteria
Multicellular A complex organism made of many cells. Eg: humans, animals
2) organisation Levels in multicellular organisms to help them function properly.
Type of level Cell-tissue-organ-organ system-organism
3) Reproduction The ability of an organisms to produce same type of individual
Sexual reproduction Produced by fusing sex cells from two parents. Eg: humans, animals
Asexual Produced by only one parent without sex cells.Eg: strawberry plants
4) Heredity The passing of characteristics from one generation to the next
Gene Unit of heredity. Controls the passing of characteristic from one generation to the next
5) Nutrition How organisms use and get food
Autotroph Organisms that can make its own food
Photosynthesis The way plants and some other organisms make their food using sunlight energy
Heterotroph Organisms that cannot make their own food so they must find and take in food
Matter The cycle through organisms as it makes and takes in food
Energy Flows from the sun to plants
6) metabolism The chemical reactions that take place in an organisms
7) Respiration The release of energy from food so organisms can do work
8) Excretion The removal of waste products of metabolism from cells
9)Homeostasis All the ways an organisms can maintain the best internal conditions for metabolism
10) Response Ways organisms react to internal and external changes in their environment
Stimulus The changes in an organisms environment
Receptor Structure that senses the changes in the organisms environment
Growth The increase in size of an organism
Created by: Maevaduch
 

 



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