Transcript A Tour of Cell Biology

A Tour of Cell
Biology
Presented by Mary Markowski
Today’s Goals!
 Introduction to cell biology
 To be introduced to the differences
between bacterial, animal and plant cells
 Gain the ability to identify characteristics
of all three types of cells
Introduction to Living Cell
Types


Living cells divided into two types - prokaryotic and eukaryotic
Division based on internal complexity
 Prokaryotic: Pre-nucleus
 Simple
 Small
 No compartmentalization
 Eukaryotic: true nucleus
 Complex
 Larger
 Highly compartmentalized
 The common feature that links all cells is the production of
PROTEINS
 These are required for the growth, development and
maintenance of all cells
Prokaryotic or Bacterial
Cells
•
•
•
•
•
Nucleoid
DNA
Ribosomes
Cell wall
Plasma
membrane
• Capsule
• Flagella
• Pili
Cool Bacterial Growth
Video!
E Coli Movie
Eukaryotic: Plant Cells
 Nucleus
 Nucleolus
 Endoplasmic
Reticulum
 Cytoskeleton
 Golgi
 Mitochondrion
 Vacuole
 Cell Membrane
 Cell Wall
 Chloroplast
Eukaryotic: Animal Cells

Nucleus

Nucleolus

Endoplasmic
Reticulum

Golgi

Cytoskeleton

Cytosol

Mitochondrion

Secretory Vesicle

Lysosome

Vacuole

Cell Membrane
The Cell: A Busy Factory

•Copyright 1996 Shawn GlynnA cell can be thought of as a "factory," with different departments each performing specialized tasks.
Universal Organelles
 For both prokaryotic and
eukaryotic
 Nucleoid or Nucleus with
DNA
 Cell membrane
 Ribosomes
 Cytosol
 For animal and plant cells
only (eukaryotic)
 All but cell wall and
chloroplasts
 Only in plant cells, why?
 Structure and photosynthesis
Implications / Significance
 Differences between the cells allow
all of us to have specialized function
 Bacteria: invade and multiply rapidly!
 Plants: strength and photosynthesis
 Humans: the most complex multicellular organisms on earth!
Conclusion
 2 very distinct
classes of cells
 Prokaryotic
 Bacteria
 Eukaryotic
 Plant
 Animal
 Fun Cell Quiz!
We never knew
cells could be
so interesting!
Works Cited
 Excel evaluation of websites