Celulas- en ingles

Páginas: 4 (846 palabras) Publicado: 21 de agosto de 2010
Center for Teaching and Learning
Presents the Fall Science Workshop Series

Wednesday October 18, 2006 1:00 p.m.

Back to the Basics: An Introductory Overview of Cells
Presented by the Centerfor Teaching and Learning And Marc McCloskey, Science TA

What We Will Be Covering
What is a Cell? The Two Types of Cells Examples of These Types of Cells The Exception The Organelles and TheirFunctions Reproduction Transfer

What is a Cell?
Latin for “small room” A cell is the functional and structural unit of all living organisms What is Considered a “Living” organism? Found as early as1632 by Antony van Leeuwenhoek The Cell Theory --1839 by the German botanist Matthias Jakob Schleiden and German physiologist Theodore Schwann

Types of Cells:
Bacteria ArchaeaEukaryotic

Fungi Plants Animals

Prokaryotic Cells
Old Greek for “Before nut (kernel)” Unicellular (some multi-cellular in very rare cases)Lacks a membrane bound nucleus Lacks membrane bound organelles Has a cell membrane (cell wall) Has ribosomes (protein production) Circular DNA

Example of a Prokaryotic Cell

Mariana Ruiz.Wikipedia.com

Greek for “small stick” Most Abundant Organism Found in all Media Many are Pathogens Move by Flagella or by Gliding Asexual Reproduction Beneficial in EverydayNeeds

Greek for “old ones” Identified in 1977 by Carl Woese of the University of Illinois at Urbana-Champaign and George Fox Extremophiles Mesophiles Found in LivingOrganisms Two Groups: Euryarchaeota and Crenarchaeota

Examples of an Archaea Cell


Prokaryotes to Eukaryotes
Chemical Evolution toBiological Evolution

Chemical Evolution (1 billion years)

Formation of the earth’s early crust and atmosphere

Small organic molecules form in the seas

Large organic molecules (biopolymers)...
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