Unicellular & Multicellular Organisms

bewgrosseteteSoftware and s/w Development

Dec 13, 2013 (3 years and 8 months ago)

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8/24/2010 12:08:00 AM

Unicellular Organisms



a
single

cell that is

capable of the functions of
life
.
This can be classified into two groups: Eukaryotic and Prokaryotic



includes

nutrition (obtains food), reproduction
, movement,
excretion, growth, homeostasis
(controlling conditions inside the
cell)
and response to stimulus.



e.g.
Bacteria, Archaea, Protists, Algae and Fungi.



Release waste through their cell membrane



Have no organs and systems



Multicellular Organisms



consist of
many

cells. Those individual
cells
rely on other cells to do these functions



have specific cells that specialize on certain functions, then work
as a whole.



perform functions which can be found in animals and plants.



Furthermore, it specializes

in reproduction.



Take in food from organ
s in their digestion system



Release waste through their organs



Cells in a Multicellular organism develop in different ways


differentiation



Emergent properties



when these cells work together and
function efficiently as a whole

o

This property causes mult
icellular organisms to be unable
to break down into smaller segments.


Viruses

have to invade a host and cannot carry out the functions
independently




Depends on a host cell’s apparatus for survival



Considered
Acellular

o

noncellular: not made up of or divid
ed into
cells

(
wordnetweb.princeton.edu/perl/webwn
)



http://simple.wikipedia.org/wiki/Unicellular_organism

http://www.daviddarling.info/encyclopedia/U/unicellular.h
tml

http://flashcarddb.com/cardset/39341
-
life
-
functions
-
biology
-
flashcards



http://www.biology
-
on
line.org/dictionary/Multicellular

http://simple.wikipedia.org/wiki/Multicellular_organism

ht
tp://www.iscid.org/encyclopedia/Emergent_Properties_of_Biological_Sy
stems




Picture 1. Picture of amoeba









Picture 2. Picture of various
types of cells



8/24/2010 12:08:00 AM



8/24/2010 12:08:00 AM