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penn foster biology
penn foster biology
15
Biology
Undergraduate 1
10/18/2011

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Term
Classification categories of Organisms
Definition

 

Species, Genus, Family, Order, Class, Phylum, Kingdom, and Domain.

Term
3 domains
Definition
Domain Bacteria, Domain Archaea, Domain Eukarya.
Term
Taxonomy
Definition
Discipline of identifying and classifying organisms according to certain rules
Term
Domain Bacteria and Domain Archaea
Definition
Contain Prokaryotes ( Unicellular and lack the membrane bounded nucleus found in the eukaryote of domain eukarya.
Term
Domain Archaea
Definition
Containes prokaryotic, lives in deep ovean steam vents.
Term
Domain Bacteria
Definition
Contains prokaryotic, they inhabit a wide variety of environments and display a remarkable range of adaptions.
Term
Domain Eukarya
Definition
Consists of 4 kingdoms-
1- kingdom protista- Organisms that may be unicellular, multicelled, or colonial ( living in colonies). Have more internal complexity than prokaryotes.
2- Kingdom Fungi- Eukaryotic, multicelled organisms that display extracellular digestion. They break down organic debris as a source of sustenance.
3- Kingdom Plantae- Multicelled, eukaryotic photosynthetic producers with vascular tissues.
4- Kingdom Animalia- are eukaryotic, multicelled consumers that are usually mobile.
Term
Extinction
Definition
Death of a species or a larger taxonomic group
Term
Matter
Definition
Anything that takes up space and has mass. Anything you can touch. All matter is composed of elements.
Term
Element
Definition
Substance that can't be broken down into another substance by ordinary chemical means.
Term
Protons
Definition
Positively charged particals
Term
Neutrons
Definition
Uncharged particles
Term
Nucleus
Definition
Center of an atom, composed of protons and neutrons.
Term
Periodic Table
Definition
Tabular arrangement of the chemical elements according to atomic number.
Term
Isotopes
Definition
Atoms that vary in neutron number
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