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characteristics of liffe

ONE RR Organisation, Nutrition, Excretion, Reproduction, Response
Organisation all living things have organised cells
Unicellular made of 1 cell only eg, Bacteria
Multicellular made of many cells eg human
CTOS Cells, Tissue, Organs, System
Tissue a group of cells working together to carry out a function, in plants: Phloem, Xylem in animals : muscle, connective
Organs a group of tissues working together to carry out a function in plants : Leaf, root in animals: heart kidney
System a group of organs working together to carry out a function in plant: none in animals: reproductive, digestive
Nutrition Way organisms obtain and use food
Autotrophic Produce own food
Heterotrophic do now produce own food
Excretion rid of waste products from metabolism
reproduction ability of organisms to make more organisms of the same typre
asexual involves 1 parent doesn't involve gametes less genetic variation runners in strawberries
sexual involves 2 parents fusion of gametes more genetic variation humans
Response way organisms react to changes in environment plants: water, light, chemicals animals: touch, heat, pain
metabolism all the chemical reactions in a cell or organism
catabolic reaction breaking down complex substances into simple ones eg digestion
anabolic reaction building simple substances into more complex ones eg Photosynthesis
Life anything which has the 5 characteristics of life
Continuity of life All living things arise from other living things of the same type.... also called BIOGENSIS
Created by: niamh tumulty



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