Burrito Book of Microbiology

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Burrito Book of Microbiology

• Tales of Tiny Assassins

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What Do We Really Need To Know?

• basic characteristics
• how they infect a host
• what diseases they cause
• how they can be stopped.

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How Viruses Attack
Viruses and Bacteria
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There is a HUGE difference in their sizes.
Viruses are 1/10th to 1/100,000th the size of a
bacterium. Bacteria are 1/10th to 1/100,000th the
size of a protist
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Viruses - Basic Characteristics
What is a virus? A non-living container of DNA.
Not a cell Must use another organism to
reproduce
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Virus Structures and Examples
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How We Get Viruses
?Sneezes! ?Coughs ?Bites from infected
animals or insects

• ?Exposure to infected bodily fluids through
  activities such as sexual intercourse or sharing
  hypodermic needles.

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Once a virus has found a new host
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Diseases Caused By Virus

• Measles, mumps, rubella, polio, encephalits,
  diptheria, chicken pox, small pox, mono, warts,

viral pneumonia...
Polio Victim
and also colds, flu, HIV, yellow fever,herpes,
bird flu , hepitiusA/B and many more!
Flu epidemic of 1918
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How do You Stop A Virus?

• Immunizations
• Natural antibodies
• Avoid others who are infected
• Wash your hands
• Maintain a strong immune system

Monoclonal antibody
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What are Bacteria?
Single-celled prokaryotes with tiny flagella.

• Different bacteria can eat everything from
  sunlight, to sugar to iron and sulfur, and may
  emit toxins as waste products.

They can be found everywhere and in large
amounts. 100,000 / square inch of skin
1,000,000,000 /teaspoon of dirt.
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Bacteria Forms
Sphere-shaped bacteria (cocci) sometimes grow in
chains or in clumps like a bunch of grapes.
Rod-shaped bacteria (bacilli) can also form in
chains.
Spiral-shaped bacteria (spirilla) can use their
shape to propel themselves by twisting like a
corkscrew.
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Diseases Caused by Bacteria

• Whooping Cough?Leprosy?Tetanus?Salmonella
  ?Botulism Scarlet fever?

Ear Ache Strep throat?Cholera?Dysentery
Gonorrhea?Anthrax ? Diphtheria ?
Syphilis?Tuberculosis Bacterial Pneumonia
Leprosy
Tetanus
And dont forget Septicemia!
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How Bacteria Invades

• Coughs or sneezes!
• Close contact with an infected person
• Contact with feces
• Cuts
• Indirectly, by touching contaminated surfaces

• Drinking contaminated water
• Eating contaminated food without cooking it
  thoroughly.

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How Prevented/Cured/Manged

• Antibiotics
• Disinfectants
• Clean water
• Cooking meat throughly
• WASHING HANDS!!!!

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and Id wash carefully after wearing that meat,
too
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Protists

• Stained Volvox and Amoebas

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Basic Characteristics Of Protists

• Single-celled eukaryotes
• Live in water
• Everyone classifies differently

Giardia
Kelp
Can live in colonies so they look big, like kelp.
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Sickness Caused By Protists
Pfeisteria -pfeisteria dinoflagellate Malaria -
plasmodium Amoebic dysentery -Entamoeba
histolytica
Pfeisteria dinoflagelate
Most protists are benign to humans.
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How They Infect

• Consumed in dirty water
• Mosquito bites
• Uncooked food

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How to Prevent Infection

• Clean water
• Insecticides, anti-malarial medicines
• Cooking food thoroughly

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Fungi Characteristics

• Eat decomposing organic material
• Like moist areas
• Come in many forms
• Macroscopic and microscopic

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• Mycelium and hyphae structure

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Sicknesses Caused by Fungi

• Ringworm
• Atheletes Foot
• Yeast Infection
• Poisoning

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How fungi infect

• Spores carry on the wind everywhere.
• Atheletes Foot - direct contact with fungus on
  surfaces
• Bacteria/fungal imbalance

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How Prevented/Cured

• Fungicides
• Good hygene
• Avoiding fungus-friendly surfaces
• Dont eat wild mushrooms!

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Whats on Tuesdays Test?

• All this info about small things that kill you
• Viruses, bacteria, fungus, protists
• What they look like, misc. important information,
  diseases caused by, how to prevent.

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What Do We Need To Know About Cells?

• How to use a microscope
• Cell Theory
• The difference between animal and plant cells.
• Role and function of the cell organelles.
• Cell processes photosynthesis, respiration, and
  mitosis/meiosis.