Classification
of Life
Review
Three Domains of Life
 Archaebacteria–
prokaryotes living in
extreme habitats

Eubacteria- common
bacteria

Eukarya – protists, fungi,
plants, & animals
Archaebacteria
(Ancient Bacteria)
Extreme
Environments!
Eubacteria
(True Bacteria)
Common
Bacteria
BACTERIA
(Monerans)
Are bacteria
visible to the
naked eye?
Set up notes
Beneficial Bacteria:




1.
2.
3.
Pathogenic Bacteria:
Common diseases:
Treatment:
Symptoms:
Source:
Transmission:
Prevention:
Reproduction:










1.
2.
Copy on Left Side
Engage
How are bacteria
beneficial to our
environment?
What role does
bacteria play in
our digestive
system?
Describe what it
means for a
bacteria to be
pathogenic.
Essential Question
Explain
What makes bacteria
different from other
organisms?
Compare and contrast
Viruses and Bacteria.
How are they alike and
different?
Virus
Bacteria
Let’s start with BrainPOP!

www.brainpop.com - Bacteria
Prokaryotic – do not have nucleus
Single-celled – unicellular
Cell wall – made of peptidoglycan
Draw Prokaryotic (Bacteria) Cell
Which
structure aids
in mobility?
Which
structure
allows for
attachment to
surfaces?
FYI - Bacteria Shapes
Diplo-
Groups of
two
Streptochains
StaphyloGrapelike
clusters
Coccus
–
round
Bacillus –
rod
Sprillum –
spiral
Beneficial Bacteria

Bacteria are beneficial to our
environment by acting as:
Decomposers - recycle of nutrients
to atmosphere
2. Nitrogen fixators - convert nitrogen
into a form plants can use
1.
Beneficial Bacteria Cont…
3. Symbiotic Relationship – Two
organisms benefit from one another
Ex. Humans and E. coli
E.coli lives in our intestines, breaks
down food for digestion
Pathogenic Bacteria



.
Bacteria that makes
you sick!
Capsule – contains a
layer of
polysaccharide
protects cell against
white blood cells.
Ex. Streptococcus
Infectious (Pathogenic) Disease Videos

Watch a number of videos and identify
which infectious diseases are caused by
bacteria!

http://www.medicalnewstoday.com/secti
ons/infectious_diseases/videos.php
Common Diseases
Strep Throat
 Tuberculosis
 Pneumonia
 Meningitis
 Anthrax

Treating Pathogenic Bacteria

Gram Stain – stained
bacteria reveals
whether to prescribe
antibiotics
Antibiotics – medicine
used to block growth
and reproduction of
BACTERIA only
 Ex: Pencillium


Vaccines – weakened
pathogen PREVENTS
disease in both
viruses and bacteria
How do antibiotics work?
 Antibiotics
–
destroy the
peptidoglycan
cell wall of the
bacteria and
treats infection!
Symptoms of a Bacterial
infection

Note: Symptoms may vary
depending on the type of
infection.

Common symptoms:
 Skin irritation like rashes
or lesions
 Fever, increase in body
temperature
 Swelling of glands
and/or tissues
 Headaches
 Inflammation of lungs or
throat
Where is bacteria found on the
body?

Surface tissues- skin
mucous
membranes, and
mouth are
constantly in contact
with bacteria!
Dental Plaque
Bacteria!
How are Bacterial Infections
Transmitted?




Exchange of bodily
fluids
Skin to skin contact,
dirty hands
Contamination
Airbourne
Preventing Bacterial Growth
Heat – inc in temp
2. Disinfection – using chemicals
3. Refrigeration – slows down
bacterial growth
4. Light – slows down bacterial
growth
1.
Bacteria Reproduction
Binary
Fission – asexual
(copy)
Conjugation
(unique)
– sexual
http://www.icyou.com/topics/diseases-conditions/bacterial-asexualreproduction-binary-fission
Cellular organism copies it’s genetic
information then splits into two identical
daughter cells
Conjugation in Bacteria

http://www.hhmi.org/biointeractive/anima
tions/conjugation/conj_frames.htm

Donor bacteria will copy its genetic
material and inject it into recipient
bacteria through pilus.
Draw on left side of INB or separate sheet of paper
Virus
Bacteria
Cut out all choices and glue under correct heading.
Requires a Host Cell in order to
reproduce
Exchange DNA material with each
other through conjugation
They use flagellum to Move
Takes over control center of the host
cell to make more of its kind
Genetic material includes DNA or
RNA, but not both
They are beneficial, such as Eschirichia
coli (E. coli), which helps in digestion
Examples of diseases include AIDS,
colds, Flu
The capsid proteins must match the
protein receptor of a host cell to be let in
Ribosomes is where protein synthesis
takes place
Can reproduce by binary fission
Contain a capsid and an envelope made
up of protein
NON living organisms
Highly specific to the cells they infect
Single celled prokaryotes (no-nucleus)
Pili allow for the attachment to surfaces
Examples of disease include Strepthroat and Diphtheria
Virus
Bacteria
Requires a Host Cell in order to
reproduce
They use flagellum to Move
Examples of diseases include AIDS,
colds, and Flu
Genetic material includes DNA or
RNA, but not both
Contain a capsid and an envelope made Ribosomes is where protein synthesis
up of protein
takes place
Highly specific to the cells they infect
Pili allow for the attachment to
surfaces
Takes over control center of the host
cell to make more of its kind
Exchange DNA material with each
other through conjugation
The capsid proteins must match the
protein receptor of a host cell to be let
in
They are beneficial, such as
Eschirichia coli (E. coli), which helps
in digestion
NON living organisms
Can reproduce by binary fission
Examples of disease include Strep-
Single celled prokaryotes (no-
Possible Activities…
“Caught Red-handed Lab”
 “Most Wanted” Poster
 Holocaust Bacteria
 Biotine
