Multiplication Video http://www.youtube.com/watch?v=5Xi2Nc1UicQ

1
Multiplication Videohttp//www.youtube.com/watch
?v5Xi2Nc1UicQ
2
Tetanus
Lyme Disease
Plague
9.2 Bacteria
MRSA
Anthrax
Staph
3

• Bacteria are ______________ living,
  single-celled organisms!
• They are carried from place to place in
  _____, _________, or on the _____________ of
  objects.
• Some can move by flicking whip-like
  _____________.

prokaryotes
air
water
surfaces
flagella
Typical Animal Cell
Typical Bacterium
Eukaryote
Prokaryote
4

1. The genetic material of prokaryotes is not
   contained in a______________.
2. Prokaryotes have no cell organelles other than
   _________________.

nucleus
ribosomes
Eukaryote
Prokaryote
5

• 3. All living things must have food (energy
  source) to survive.
• a. __________ - make their own food one of _____
  ways

Autotrophs
two

• Using the suns energy
• (photosynthesis)

• Using chemical energy
• (chemosynthesis)

6
Heterotrophs
Decomposers

• b. _______________ - consume other organisms.
  Ex) ______________

cellular respiration
Remember, all living cells do
_____________________, which requires
___________.
Oxygen
7
B. Bacteria Shapes 1. ________________________
Rod-like (Bacillus)
8
2. _________________________
Spherical (Coccus)
9
3. ________________________
Spiral (Spirillus)
10

• C. Reproduction - Bacteria can reproduce two
  ways
• Asexual reproduction is accomplished through
  __________ __________.
• a. One parent divides to produce two
  _____________ bacteria.
• This ________ genetic diversity.

binary
fission
identical
limits
11
2. Sexual reproduction is accomplished through
_________________. a. Two parents produce
new organisms that _____________ their
genes from each parent. This
___________ genetic diversity.
conjugation
inherit
increases
12
D. Bacteria and Us Reasons to be glad bacteria
are out there! 1. Oxygen production
oxygen
a. A great deal of Earths ___________ is
produced by bacteria, and other
photosynthesizing autotrophs.
13
2. Natural recyclers a. _________________
are heterotrophic bacteria that
break down large chemicals in dead
organisms into small chemicals.
b. These chemicals are returned to the
__________ for other
organisms to use.
Decomposers
soil
14
3. Food Production pasteurization of dairy
products. a. _____________________
b. ___________________
butter
cheese
c. ____________________
d. ____________________
yogurt
kefir
15
4. Your body a. Good bacteria on your body
_____________ _____ ___________ with
bad bacteria.
compete
for
space
16
b. Good bacteria in your _________________ help
digest food.
intestines
http//player.discoveryeducation.com/index.cfm?gui
dAssetIddf103fa0-40ec-4d80-b94a-9c039db80c28
17
genetic engineering

• c. Recall that bacteria are frequently used in
  __________________.
• Ex) production of human insulin

18
Skin as a Barrier

• http//player.discoveryeducation.com/index.cfm?gui
  dAssetId5f74f4b1-347a-49e3-a516-b4f24e6e7e51

19
Fun Fact!!!
5. Bacteria and Disease a. Bacteria that cause
disease make up less than ____________ of
known bacteria species.
one percent

• The ____________ toxin produced by bacteria in
  poorly-preserved canned or jarred food, is used
  in small doses in __________ injections as a way
  to temporarily paralyze muscles.

botulism
botox
20
Dino Disease?

• http//player.discoveryeducation.com/index.cfm?gui
  dAssetIdabbebdc3-7395-4abc-9be6-43f3e6fca5b9

21
alive
killed

• b. Because they are _________, bacteria can be
  ____________,
• using _______________.
• c. Antibiotics are ________ that are typically
  produced by _________,
• which have been competing with bacteria on
  Earth for ______________
• of years in the worlds oldest Arms Race

antibiotics
Ex) Penicillin
toxins
fungi
billions
22
Ex) MRSA (Methicillin-resistant
Staphylococcus-aureus)

• d. There are drawbacks to using antibiotics
• - antibiotics can also kill the ______ bacteria
  in our bodies
• - antibiotics can cause unwanted ____________.
• - over-use of antibiotics can lead to the
  _____________ of
• antibiotic-____________ bacteria which can
  withstand our
• strongest medicines.

good
side effects
evolution
resistant
Incorrect antibiotic use kills all but the
strongest bacteria
23
Antibiotic Resistance

• http//player.discoveryeducation.com/index.cfm?gui
  dAssetIde852a83c-8149-4d4e-8181-439511cbc0cd

24
Quiz (who was listening? ?)

• Are bacteria alive?
• Do bacteria cells have a nucleus?
• What is it called when bacteria reproduce
  asexually?
• Are all bacteria harmful?
• Name one way that bacterial can be helpful
• Name one antibiotic
• Complete this sentence
• When antibiotics are used incorrectly, they kill
  off the weakest bacteria in a sick person,
  leaving the ____________ ones to survive and
  reproduce
• http//www.fda.gov/AnimalVeterinary/SafetyHealth/A
  ntimicrobialResistance/ucm134359.htm

25

• http//www.fda.gov/downloads/AnimalVeterinary/Safe
  tyHealth/AntimicrobialResistance/UCM134417.wmv