Feb. 4th
Turn Ins:
Sci. Fair. Letter (late)
HGD
Zoo
Bellwork
Check & Tape Intro. To Microbiology
Virus & Bacteria Notes & Video
*Complete Wkst 3 & 4 in Classification Pkt. Finish as
homework if needed. It is due tomorrow.
DO-SWBAT describe viruses and bacteria
DQ- Microbiology True & False (next slide)
1. Microorganisms are very large.
(True or False)
2. Living things are organized, grow, reproduce, and
respond to stimuli.
3. Living things only need energy to live.
4. Archaea are multicellular organisms that are parasites.
5. Bacteria are decomposers.
6. Bacteria are always harmful.
7. Viruses are living things that are made of cells.
8. Viruses require a host to reproduce.
9. Bacteriophages are bacteria that infect viruses.
10.Protists are prokaryotic like bacteria.
11.Algae is an example of a protist.
12.Plankton live in marine ecosystems and produce
oxygen.
1. Microorganisms are very large. False
2. Living things are organized, grow, reproduce, and
respond to stimuli. True
3. Living things only need energy to live. False
4. Archaea are multicellular organisms that are parasites.
False
5. Bacteria are decomposers. True
6. Bacteria are always harmful. False
7. Viruses are living things that are made of cells. False
8. Viruses require a host to reproduce. True
9. Bacteriophages are bacteria that infect viruses. False
10.Protists are prokaryotic like bacteria. False
11.Algae is an example of a protist. True
12.Plankton live in marine ecosystems and produce
oxygen. True
Brazil: Zika Virus Disc. Ed.
Viruses
Definition- A nonliving disease-causing particle
that uses the materials inside host cells to
make copies of itself.
It consists of genetic material enclosed in a
protein coat.
HIV Virus
Characteristics of
viruses:
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Microscopic
Infectious agent
Found in almost all life forms
Requires a host cell for reproduction
The study of viruses is called virology
Adapt to immune responses
More difficult to treat than bacteria
Viral Disease Examples
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AIDS
Burkitt's lymphoma
chicken pox
colds
Colorado tick fever
dengue
encephalitis
fever blisters
genital warts
gastroenteritis
genital herpes
German measles
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hepatitis
influenza
leukemia
liver cancer
measles
mononucleosis
mumps
oral herpes
polio
rabies
shingles
smallpox
virus hemorrhagic fever
warts
yellow fever .
Deadliest Bacteria Reading & Video Clip
How are viruses classified?
Classified based on:
Shape and genome arrangement
How do viruses infect you?
Virus Structure
Current Research
Bacteria: Disc. Ed.
BACTERIA
Bacteria
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Unicellular
Prokaryotic
Ubiquitous (found everywhere)
Types:
– Cyanobacteria have chloroplasts, serve as food and
oxygen producers
– Decomposers break down dead stuff for energy, serve
as one of Earth’s natural garbage disposals
– Symbiotic bacteria (live together with other organisms)
– Parasitic bacteria cause illness.
Bacteria
Structure
Reproduction by Binary Fission
Bacteria Classification
• Shape: Round, Rod, or spiral
• Gram Stain: Positive or Negative
Bacteria
Helpful Bacteria
• Sewage treatment plants
• Clean up oil spills
• Nitrogen Fixation (makes
nitrogen available to plants)
• Produce vitamins B and K in our
intestine
• Help digestion and absorption
• Limit growth of bad bacteria
Read “The Good, the Bad, and the
Ugly Bacteria”
Harmful Bacteria
• Tuberculosis
• Cholera
• Salmonella
• Staphylococcus
• Streptococcus
• Botulism
• Infant Diarrhea
• Produce toxins (poisons)
• Secondary Infections
View “Understanding Bacteria”
Discovery Ed.