Taxonomic groups

Term Definition
cell the smallest unit of an organism that performs life functions
nucleus a structure found in eukaryotic cells that contain DNA and is responsible for controlling the activities of the cell
Eukaryotic a cell containing a membrane – enclosed nucleus and organelles
Prokaryotic a cell lacking a nucleus or any other membrane – enclosed organelles
unicellular an organism made up of one single cell
multicellular an organism made up of more than one cell, and often made up of different types of cells
classification the process of grouping things based on similarities
taxonomy the branch of science that formally names and classifies organisms by their structure, function, and relationship
Domain the highest and largest rank of grouping organisms Three groups: Archaea , Bacteria, and Eukarya
Domain Bacteria prokaryotic, single celled organism that lacks a nucleus in its cell
Domain Archaea prokaryotic single celled organism that lacks a nucleus in its cell and can live in extreme environments
Domain Eukarya organisms with cells that contain a nucleus (Eukaryotic)
Kingdom a taxonomic rank below Domain 6 groups: Animalia, fungi, Plantae, Protista, Archaea, and Eubacteria
autotroph an organism that is able to make its own food; known as a producer in the food chain
heterotroph an organism that CANNOT make its own food; known as a consumer in the food chain
asexual reproduction a method of reproduction that requires only one parent 100% DNA from 1 parent
sexual reproduction a method of reproduction that requires both male and female parent 50% from 1 parent 50% from 1 parent
cell theory states that all living organisms are made up of 1 or more cells; cells are the basic unit of all life and all cells come from other cells
Kingdom Archeabacteria unicellular, asexual, auto and heterotroph, prokaryotic organism that live in extreme environments
Kingdom Eubacteria unicellular, asexual, auto and heterotroph, prokaryotic organism that live in moderate environments
Kingdom Protista uni- and multi cellular sexual or asexual, heterotroph, eukaryotic organism that are microscopic
Kingdom Fungi uni and mulit cellular sexual or asexual, heterotrophic , eukaryotic organuism known as the decomposers in the food chain
Kingdom Plantae multi cellular, sexual and asexual, autotrophs, eukaryotic organism known as the producers in the food chain
Kingdom Animilia multi cellular, sexual and asexual, heterotrophs, eukaryotic organisms known as the consumer in the food chain
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