(1) Having or consisting of only one cell.
(2) Pertaining to an organism whose functions are all carried out within one cell.
Examples of organisms that are unicellular are microorganisms such as bacteria and some algae such as diatoms.
Multicellular
Having or consisting of many cells or more than one cell to perform all vital functions.
Examples of organisms that are multicellular are humans, animals and plants.
One Kingdom of Both Unicellular and Multicellular
Protista
Protista — Algae, Protozoa, Slime Molds, and Water Molds
Animated gif of a dinoflagellate moving around using its flagellum
A dinoflagellate in motion. Courtesy of Dinoflagellates by Jean-Marie Cavanihac, France.
Protists are eukaryotic creatures <you-carry-ah-tick>, meaning their DNA is enclosed in a nucleus inside the cell (unlike bacteria, which are prokaryotic <pro-carry-ah-tick> and have no nucleus to enclose their DNA. They’re not plants, animals or fungi, but they act enough like them that scientists believe protists paved the way for the evolution of early plants, animals, and fungi. Protists fall into four general subgroups: unicellular algae, protozoa, slime molds, and water molds.
PROTISTA OF NOTE
Green algae grows in masses that form slick, green scum on pond surfaces. Its ancestors from 500 million years ago probably gave rise to today's multicellular plants.
Plasmodium vivax, the parasite that causes malaria, lives part of its life cycle in mosquitoes and the other part in human hosts where it infects and ruptures blood cells in large numbers.
Phytophthora infestans is the water mold responsible for the Great Potato Famine that killed nearly a million people in Ireland in 1846–1847.
Living Things Divided into Two Major Groups
Prokaryotes (pro-kary-ote) Prokaryotes vs. eukaryotes
Eukaryptes (u-kary-ote)
Biology
Chapter 7 Linkshttp://www.glencoe.com/sec/science/biology/bee/chapter7/weblinks.shtml
Chapter 2
Cell Biology
http://www.glencoe.com/sec/science/cgi-bin/splitwindow.cgi?top=http://www.glencoe.com/sec/science/top2.html&link=http://www.cellsalive.comUTUBE Cellular Biology
How the cell works
utube cell
Unicellular
Unicelluar Biology
(1) Having or consisting of only one cell.(2) Pertaining to an organism whose functions are all carried out within one cell.
Examples of organisms that are unicellular are microorganisms such as bacteria and some algae such as diatoms.
Multicellular
Having or consisting of many cells or more than one cell to perform all vital functions.Examples of organisms that are multicellular are humans, animals and plants.
Two Kingdoms of Unicellular
Archaea
Fossil range: Paleoarchean - Recent
Halobacteria sp. strain NRC-1, each cell about 5 μm in length
Bacteria
Three Kingdoms of MulticellularAnimals
Fungi
Plants
One Kingdom of Both Unicellular and Multicellular
Protista
Protista — Algae, Protozoa, Slime Molds, and Water Molds
A dinoflagellate in motion. Courtesy of Dinoflagellates by Jean-Marie Cavanihac, France.
Protists are eukaryotic creatures <you-carry-ah-tick>, meaning their DNA is enclosed in a nucleus inside the cell (unlike bacteria, which are prokaryotic <pro-carry-ah-tick> and have no nucleus to enclose their DNA. They’re not plants, animals or fungi, but they act enough like them that scientists believe protists paved the way for the evolution of early plants, animals, and fungi. Protists fall into four general subgroups: unicellular algae, protozoa, slime molds, and water molds.
Plasmodium vivax, the parasite that causes malaria, lives part of its life cycle in mosquitoes and the other part in human hosts where it infects and ruptures blood cells in large numbers.
Phytophthora infestans is the water mold responsible for the Great Potato Famine that killed nearly a million people in Ireland in 1846–1847.
Living Things Divided into Two Major Groups
Prokaryotes (pro-kary-ote)
Prokaryotes vs. eukaryotes
Eukaryptes (u-kary-ote)