Download Bacteria

Warm Up
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1. What has been your favorite thing about
6 grade so far?
2. How do you think you did on the test?
3. What are the 7 levels of classification?
Kingdoms
How are viruses different from
bacteria?
What are the 6 Kingdoms?
 Archaebacteria
 Eubacteria
 Protists
 Fungi
 Plants
 Animals
Bacteria
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Micro- small (microscope- to look at small
things)
Bacteria used to be classified into one
kingdom called Monerans.
Now it’s split into two kingdoms:
Archaebacteria and Eubacteria
Bacteria are prokaryotes
– before
 Karyon – nucleus
 The simplest forms of life are
prokaryotes.
 Earth’s first cells were
prokaryotes.
 Pro
Eubacteria
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They are the common bacteria that
causes the diseases we are familiar with.
Archaebacteria
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These are the oldest bacteria.
They are found in extreme conditions
like hot springs and thermal vents in the
ocean under conditions with no oxygen or
highly acid environments.
Shape
 Rod:
bacillus
 Spheres: coccus
 Spirals: spirillum
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Bacteria reproduce rapidly.
Viruses
Dead or alive?
Viral structure
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Viruses are not cells.
Basic structure:
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Protein coat
Nucleic acid core (RNA or DNA)
Lipoprotein coat
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(second coat – only in enveloped viruses)
Is A Virus Alive?
This may look like a
space capsule, but it's
actually a virus.
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The top part is the
capsid, the body is the
sheath, and the tails at
the bottom help the
virus attach to its host
Is A Virus Alive?
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Viruses are right on the border between
living and nonliving.
Viruses must have a host cell to live and
reproduce.
Outside of the host cell, viruses are pieces
of genetic molecules that can do nothing by
themselves.
Video
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http://www.youtube.com/watch?v=Rpj0emE
GShQ
http://www.youtube.com/watch?v=JnlULOj
UhSQ
Warm Up
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1. What is eubacteria?
2. What is archaebacteria?
3. What is a virus?
4. What are the shapes of bacteria?
5. What are all of the kingdoms?
Virus Stages
1.
2.
Virus attaches
Virus injects DNA
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3.
4.
5.
Hostile takeover of cell
Cell forced to make virus parts.
Virus splits the cell
So many = blows the cell apart
Let’s Compare!
Viruses
Bacteria
Not A Kingdom
2 Kingdoms
Not Alive
Alive!
Smaller than a cell
IS a cell
Let’s Compare!
Viruses
Bacteria
Cannot Reproduce on
own
Can reproduce on its
own
NOT Microorganism
Microorganism
Can Cause Disease
Can Cause Disease
Let’s Compare!
Viruses
Benefits:
none
Bacteria
Benefits:
Decomposition
Digestion
Warm UP
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1. What are the stages of virus
reproduction?
2. What are the 6 characteristics of life?
3. What is eubacteria? What is
archaebacteria? Where are they found?
4. Go get your potatoes and wait for
instructions.
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Some Bacteria live symbiotically in the guts
of animals or elsewhere in their bodies.
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For example, bacteria in your gut produce
vitamin K which is essential to blood clot
formation.
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Bacteria put the tang
in yogurt and the sour
in sourdough bread.
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Saprobes help to
break down dead
organic matter.
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Bacteria make up the
base of the food web
in many environments.
Streptococcus thermophilus in yogurt