microorganisms: normal flora and …...microorganisms: normal flora and pathogens bell work- go to...
TRANSCRIPT
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MICROORGANISMS:NORMAL FLORA AND PATHOGENS
BELL WORK- GO TO PAGE 468 IN NEW BOOK; READ THE
GIVEN DEFINITIONS AND FIRST THREE PARAGRAPHS AND
GIVE A BRIEF DESCRIPTION OF THE FOLLOWING:
MICROORGANISM VIRUS
PATHOGENIC NONPATHOGENIC
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STANDARD
14) UNDERSTAND THE PRINCIPLES OF AND SUCCESSFULLY
PERFORM THE FOLLOWING SKILLS TO PREVENT OR
CURTAIL THE SPREAD OF PATHOGENIC AND NON-PATHOGENIC
ORGANISMS:
A. HAND WASHING
B. GLOVING
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OBJECTIVE
TO BE ABLE TO FULLY MEET THE STANDARD WE HAVE TO DEFINE CERTAIN
TERMS (PATHOGENIC AND NONPATHOGENIC). WE HAVE TO UNDERSTAND
THE MEANING OF THESE TERMS AND WHY THEY ARE DANGEROUS BEFORE
WE CAN FULLY EXPLAIN THE PREVENTION OF THEIR SPREADING.
BY THE END OF THE CLASS, STUDENTS WILL BE ABLE TO:
• DIFFERENTIATE BETWEEN PATHOGENIC AND NONPATHOGENIC
ORGANISMS BY CREATING “A MOST WANTED PATHOGEN” POSTER
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NORMAL FLORA AND PATHOGENS
• A MICROORGANISM IS AN EXTREMELY TINY ORGANISM SEEN ONLY BY USING A MICROSCOPE
• MICROORGANISMS THAT CAUSE DISEASE ARE CALLED PATHOGENS
• NOT ALL MICROORGANISMS CAUSE DISEASE OR ARE “PATHOGENIC”
• HARMLESS MICROORGANISMS ON AND IN OUR BODY ARE CALLED “NONPATHOGENIC”
MICROORGANISMS
• THE MICROORGANISMS THAT NATURALLY LIVE ON OR IN OUR BODY ARE COLLECTIVELY
CALLED THE BODY’S NORMAL FLORA
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NORMAL FLORA AND PATHOGENSHTTPS://WWW.YOUTUBE.COM/WATCH?V=5DTRENDWVVM&INDEX=83&LIST=FLERSTYMA_-QQ13PLC8ZV--G
• IN FACT NORMAL FLORA ACTUALLY FIGHTS OFF THE BAD PATHOGENS THAT TRY TO ENTER
OUR BODIES.
Normal Flora is also called the body’s MICROBIOME.
Let’s check out the video!
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PATHOGENS
• REQUIRE NUTRIENTS, MOISTURE, WARMTH, AND EVEN
DARKNESS TO GROW AND THRIVE
• AEROBIC PATHOGENS REQUIRE OXYGEN TO SURVIVE
• ANAEROBIC PATHOGENS REQUIRE OXYGEN-FREE
ENVIRONMENT TO SURVIVE
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TYPES OF PATHOGENS
• FIVE MAIN TYPES OF PATHOGENS:
• VIRUS
• BACTERIA
• FUNGUS
• PARASITES
• PROTOZOAN
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VIRUS
• VIRUSES
• SMALLEST TYPE OF MICROORGANISM. THEY ARE
MADE UP OF ONLY A FEW MOLECULES.
• VIRUSES INVADE THE CELLS OF A LIVING
ORGANISM WHERE THEY REPRODUCE MORE
VIRUSES.
• MORE THAN 400 TYPES
• VIRAL INFECTIONS/DISEASES- COMMON COLD,
FLU, RHINOVIRUS, NOROVIRUS, CHICKEN POX,
MEASLES, HERPES, HEPATITIS B AND C, HIV, AND
AIDS
• CAN ANTIBIOTICS TREAT VIRUSES (VIRAL
INFECTIONS)?
• HOW CAN VIRUSES BE PREVENTED OR TREATED?
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Measles
Can we prevent
measles today?
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BACTERIA
• BACTERIA
• ONE-CELLED MICROORGANISMS CLASSIFIED BY SHAPE.
• THREE TYPES:
• COCCI—ROUND SHAPE
• BACILLI— ROD SHAPE
• SPIRILLA—SPIRAL SHAPE
• SPORES ARE THICK-WALLED CELLS CREATED BY BACTERIA
TO AID IN REPRODUCTION AND TO MAKE THE BACTERIA
RESISTANT TO HARSH ENVIRONMENTS. SPORES CAN
RESULT IN SERIOUS ILLNESS.
• BACTERIAL INFECTIONS - STAPH INFECTIONS, STREP
THROAT, LYME DISEASE, AND GONORRHEA
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Take a moment
to write down the
three shapes of
bacteria.
Only draw one
example of each type.
You do not have to
know all of the names
In each category.
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Strep Throat
What is this tiny
creature?
Have you ever
found one? Where?
What disease can it
cause?
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FUNGUS
• FUNGI- PLANT-LIKE MICROORGANISMS THAT
CAN BE FOUND IN THE AIR, IN SOIL, ON
PLANTS, OR IN WATER.
• YEAST, MOLD, AND MUSHROOM
• MANY PRESENT IN BODY’S NORMAL FLORA
• MANY DO NOT CAUSE DISEASE
• FUNGAL INFECTIONS- ATHLETE’S FOOT,
RINGWORM, THRUSH, AND YEAST
INFECTIONS
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And….what is this?
Why does it have this name?
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PARASITE• PARASITE- CAN INFECT EYES, NOSE, BRAIN, INTESTINES
• DERIVE A BENEFIT FROM THEIR HOST WITHOUT GIVING
ANYTHING BACK
2 TYPES
1. ECTOPARASITES (OUTSIDE): FLEAS, LICE, MOSQUITOS,
TICKS
PASS ON DISEASES LIKE MALARIA, ROCKY MOUNTAIN
SPOTTED FEVER, AND TYPHUS
2. ENDOPARASITES (WITHIN): TAPE WORMS, ROUND
WORMS
EATING UNDERCOOKED MEAT AND DRINKING
CONTAMINATED WATER.
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PROTOZOAN – TYPE OF ENDOPARASITE
• PROTOZOAN-THE SIMPLEST ORGANISMS IN THE ANIMAL
KINGDOM.
• LIVE MAINLY IN SOIL
• SPREAD THROUGH FECAL–ORAL ROUTE BY INGESTED
CONTAMINATED FOOD OR WATER
• SOME SPREAD BY MOSQUITOES OR OTHER INSECTS
• MOST PROTOZOA NEED MOISTURE TO SURVIVE, SO THEY ARE
OFTEN FOUND IN WATERY ENVIRONMENTS.
• DISEASES - MALARIA, DYSENTERY, AND AFRICAN SLEEPING
SICKNESS
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Mosquitos (an Ectoparasite)
transmit Malaria by sharing an
endoparasite, plasmodium.
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UNDERSTANDING CHECK!!
• 1. WHICH MICROORGANISM IS HARMFUL TO THE BODY?
PATHOGENIC OR NONPATHOGENIC
• 2. WHAT IS THE GOOD BACTERIA IN OUR BODY CALLED?
• 3. NAME THE FIVE PATHOGENS WE DISCUSSED.
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PROJECT: PATHOGEN WANTED POSTERS
• RESEARCH PATHOGEN AND
PRODUCE A “WANTED POSTER”
• MUST SIGN UP FOR YOUR
PATHOGEN. EVERYONE WILL HAVE
DIFFERENT PATHOGEN TO
RESEARCH.
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REQUIREMENTS
• PHOTO OR DRAWING
• DESCRIPTION
• PATHOGEN TYPE: BACTERIA, VIRUS, FUNGUS, ETC.
• ORGANISM’S “M.O.” (HOW IT ATTACKS AND SPREADS)
• MOST COMMON VICTIMS TO PREY UPON
• HIDE OUT OF THE CULPRIT (WHERE IS IT MOST LIKELY TO BE FOUND)
• IS IT CONSIDERED ARMED AND DANGEROUS?
• MOST EFFECTIVE WEAPONS AGAINST THE PATHOGEN
• ANY OTHER CHARACTERISTICS
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WHICH DO THINK IS AN ‘A’ PROJECT, ‘B’, ‘C’?
• I EXPECT ALL OF THE REQUIREMENTS.
•NOTICE THE EXAMPLES I WILL SHOW YOU.
•YOU WILL BE GRADED FOR YOUR EFFORT, CONTENT,
AND CREATIVITY.
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EXIT TICKET
1. WHAT ARE THE HARMLESS MICROORGANISMS ON AND IN OUR
BODY ARE CALLED?
2. WHAT ARE THE MICROORGANISMS CALLED THAT CARRY HARMFUL
DISEASES?
3. WHICH MICROORGANISM CAN BE TREATED WITH ANTIBIOTICS?
4. GIVE TWO EXAMPLES OF WAYS PATHOGENIC DISEASES CAN BE
SPREAD?