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This is a group of about 5 bacteria gathered together

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• Anyone want to guess what this is??

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• Closer in….

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This is a group of about 5 bacteria gathered together

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Bacteria on the tipof a pin

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Bacteria is composed of microorganisms that are common and live almost anywhere.

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Bacteria is composed of microorganisms that are common and live almost anywhere.

There are moreBacteria in your mouth

than there are people onplanet Earth.

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“Imagine how much

bacteria exist in snot!”

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Label as Bacteria

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Prokaryotic (No nucleus) and no internal organelles.

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Prokaryotic (No nucleus) and no internal organelles.

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Prokaryotic (No nucleus) and no internal organelles.

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Prokaryotic (No nucleus) and no internal organelles.

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Prokaryotic (No nucleus) and no internal organelles.

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Prokaryotic (No nucleus) and no internal organelles.

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Prokaryotic (No nucleus) and no internal organelles.

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• Human Cell

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• Human Cell Frog Cell

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• Human Cell Frog Cell

Similar in composition.

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• Human Cell

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• Human Cell Bacteria Cell

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• Human Cell Bacteria Cell

Eukaryotic – Nucleus and membrane bound organelles.

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• Human Cell Bacteria Cell

Eukaryotic – Nucleus and membrane bound organelles.

Prokaryotic Cell – Nucleoid, DNA free floats in cytoplasm,

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Which cell has a nucleus (Eukaryotic), and which is a bacteria (Prokaryotic).

Copyright © 2010 Ryan P. Murphy

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Which cell has a nucleus (Eukaryotic), and which is a bacteria (Prokaryotic).

Copyright © 2010 Ryan P. Murphy

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Cell with nucleus Cell without nucleusEukaryotic

Copyright © 2010 Ryan P. Murphy

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Cell with nucleus Cell without nucleusEukaryotic

Copyright © 2010 Ryan P. Murphy

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Cell with nucleus Cell without nucleusEukaryotic Prokaryotic (Bacteria)

Copyright © 2010 Ryan P. Murphy

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Cell with nucleus Cell without nucleusEukaryotic Prokaryotic (Bacteria)

Copyright © 2010 Ryan P. Murphy

DNA is in a ring not a nucleus

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• Which is prokaryotic?

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• Which is prokaryotic?

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• Which is prokaryotic?

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• Which is prokaryotic?

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Types of Bacteria

Copyright © 2010 Ryan P. Murphy

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Types of Bacteria

Copyright © 2010 Ryan P. Murphy

Note: Not everytype of bacteria will

be addressed.

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Types of BacteriaSphere (Round) Shaped: Cocci

Copyright © 2010 Ryan P. Murphy

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Rod shaped: Bacilli

Copyright © 2010 Ryan P. Murphy

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• Practice before Quiz Wiz. – Which bacteria is the arrow pointing to?

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• Answer: Cocci

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• Practice before Quiz Wiz. – Which bacteria is the arrow pointing to?

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• Answer: Spirilli

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• Practice before Quiz Wiz. – Which bacteria is the arrow pointing to?

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• Answer: Bacilli

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• Answers to the Quiz 1-10.

Copyright © 2010 Ryan P. Murphy

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New Area of Focus: Bacteria and your health.

Copyright © 2010 Ryan P. Murphy

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Important Note:This portion of the unit will begin discussing the negatives of bacteria / food borne illness. It’s important to know that bacteria are critical to our survival and play many important roles in the ecosystem.

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• Why should you care about learning about food borne illnesses?

Copyright © 2010 Ryan P. Murphy

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• Answer! 76+ million Americans contract a food borne illness each year.

Copyright © 2010 Ryan P. Murphy

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• Answer! 76+ million Americans contract a food borne illness each year.– Learning about them can help you when the

picture below becomes your home for a few days.

Copyright © 2010 Ryan P. Murphy

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• Answer! 76+ million Americans contract a food borne illness each year.– Learning about them can help you when the

picture below becomes your home for a few days.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

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• Bacterial Food Poisoning– 81 million cases a year.– 20 of the many thousands of different bacteria

actually are the culprits.– Symptoms, including diarrhea, fever, vomiting,

abdominal cramps, and dehydration. – Salmonella, E.coli.

Copyright © 2010 Ryan P. Murphy

Learn more about bacterial food poisoning at… http://digestive.niddk.nih.gov/ddiseases/pubs/bacteria/

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Bacterial food borne illness can be prevented by…. - - - -

Copyright © 2010 Ryan P. Murphy

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Controlling the initial number of bacteria present.

Copyright © 2010 Ryan P. Murphy

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• Washing food before preparation and serving.

Copyright © 2010 Ryan P. Murphy

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• This lettuce looks healthy, why should I wash it?– It only grows in a field.

Copyright © 2010 Ryan P. Murphy

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• What is one thing missing from this workplace?

Copyright © 2010 Ryan P. Murphy

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• Answer – A restroom to dispose of waste and to wash hands.

Copyright © 2010 Ryan P. Murphy

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• Answer – A restroom to dispose of waste and to wash hands.– Some places are responsible, follow code and

provide facilities to workers. Some do not.

Copyright © 2010 Ryan P. Murphy

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• Answer – A restroom to dispose of waste and to wash hands.– Some places are responsible, follow code and

provide facilities to workers. Some do not.

Copyright © 2010 Ryan P. Murphy

Bathroom

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• Answer – A restroom to dispose of waste and to wash hands.– Some places are responsible, follow code and

provide facilities to workers. Some do not.

Copyright © 2010 Ryan P. Murphy

Bathroom

“ahhh.”

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• Where in a restaurant would you expect to find the most harmful bacteria?

Copyright © 2010 Ryan P. Murphy

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• Where in a restaurant would you expect to find the most harmful bacteria?

Copyright © 2010 Ryan P. Murphy

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• Where in a restaurant would you expect to find the most harmful bacteria?

Copyright © 2010 Ryan P. Murphy

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.

Copyright © 2010 Ryan P. Murphy

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Answer! Studies have found the lemon / limes have more harmful bacteria on them than even the restrooms.– Very rarely are the lemons washed before

they end up in your drink or on your food.

Copyright © 2010 Ryan P. Murphy

What was just on thiscutting board 3 mins. ago

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• Learning proper hygiene and hand washing.

Copyright © 2010 Ryan P. Murphy

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• Proper hand washing techniques.

Copyright © 2010 Ryan P. Murphy

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Destroying the bacteria by proper cooking.

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• When the wait staff asks how you would like your meat cooked, say…

• “I would like my meat well done!”

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Avoiding re-contamination. Clean cutting board immediately after

use.

Copyright © 2010 Ryan P. Murphy

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• Don’t place raw produce on cutting board and then place something else that isn’t going to be cooked.

Copyright © 2010 Ryan P. Murphy

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• Don’t place raw produce on cutting board and then place something else that isn’t going to be cooked.– Don’t prepare a salad on a board that has

touched raw meat without cleaning.

Copyright © 2010 Ryan P. Murphy

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• Don’t place raw produce on cutting board and then place something else that isn’t going to be cooked.– Don’t prepare a salad on a board that has

touched raw meat without cleaning

Copyright © 2010 Ryan P. Murphy

Lemon Slice?

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• Lastly, Never feed infants honey.??????

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• Lastly, Never feed infants honey.??????

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• Lastly, Never feed infants honey.

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• Lastly, Never feed infants honey.– Clostridium bacteria that cause infant botulism

can be found in honey. It causes a number of dangerous health effects and even death.

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• Lastly, Never feed infants honey.– Clostridium bacteria that cause infant botulism

can be found in honey. It causes a number of dangerous health effects and even death.

Learn more about botulism at… http://www.cdc.gov/nczved/divisions/dfbmd/diseases/botulism/

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• Activity Reading with Questions.– Bacteria and your food.

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• Preventing contamination is one of the best measures to fight bacteria.

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• Preventing contamination is one of the best measures to fight bacteria.– But what happens when you contract a

bacterial infection?

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• Preventing contamination is one of the best measures to fight bacteria.– But what happens when you contract a

bacterial infection?

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Penicillin: Antibiotic that destroys bacteria derived from penicillin mold (fungi).

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• Originally noticed by Ernest Duchesne, in 1896. – Penicillin was re-discovered by bacteriologist

Alexander Fleming working at St. Mary's Hospital in London in 1928.

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Caution

Enter this next section at your own risk!!!

Girly Girls you may work out of the book in the hall.

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• Gangrene: A death of body tissue that usually occurs when there has been an interruption of blood supply, followed by bacterial invasion.

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• Seek medical attention immediately. (Antibiotics)

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• This is the treatment option when gangrene has spread.

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• This is the treatment option when gangrene has spread.

Old

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• This is the treatment option when gangrene has spread.

Old

No Anesthesia

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• This is the treatment option when gangrene has spread.

Old Modern

No Anesthesia

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• Don’t go swimming with an open cut or wound. – It is an entrance for bacteria into your body.

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Antiseptic: Agent that kills or inhibits the growth of micro-organisms on the external surfaces of the body.

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• This is what can happen if you don’t clean your teeth and allow them to rot away.

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Binary Fission: The process by which a bacterium multiplies by splitting in two.

Copyright © 2010 Ryan P. Murphy

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Learn more about bacterial reproduction at… http://www.scienceprofonline.com/microbiology/binary-fission-cell-division-reproduction-prokaryotes.html

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• You are made of more than 65 trillion human cells.

Copyright © 2010 Ryan P. Murphy

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• You are made of more than 65 trillion human cells. – Multiply that number by 10 and that’s how

many bacteria are living in your body.

Copyright © 2010 Ryan P. Murphy