what is a microorganism?
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What is a microorganism?. micro – very small; organism – living thing. A very small, living thing. Let’s look at examples of microorganisms. Bacteria. Bacteria are single-celled organisms (made of one cell). They are found everywhere. What are bacteria?. - PowerPoint PPT PresentationTRANSCRIPT
What is a microorganism?
micro – very small; organism – living thing.
A very small, living thing.
Let’s look at examples of microorganisms.
Bacteria
Bacteria are single-celled organisms (made of one cell).
They are found everywhere.
What are bacteria?
Science Pirates – Bacteria Song
Bacteria – The Good, the Bad, and the
Kinda Gross
Bacteria come in three shapes.
Round (coccus)
Rod (bacillus)
Spiral (spirillum)
Some are producers.
(Producer – makes own food)
Other bacteria are consumers.
(Consumer - Has to find food and eat it.)
Beneficial uses of bacteria.Provide nitrogen for plants. Fixes the nitrogen (changes the nitrogen to a form the plant can use).
Get minerals from ores.
Help make antibiotics.
Used to make plastics and laundry detergents.
Beneficial uses of bacteria.
FoodsYogurtSauerkrautPicklesOlives
ChocolateCheeseSoy SauceVinegarKetchup
Beneficial uses of bacteria.Foods
Harmful effects of bacteria.
Cause Diseases (<1% of bacteria cause diseases)
Three ways to get disease.
Through touch.Through air (breathe in).Eating contaminated food.
Examples of bacterial diseases.Harmful effects of bacteria.
Dental caries (cavities).Strep throat.Salmonella.Typhoid fever.
Causes disease in farm animals.
Causes metal to rust and wear away.
Click here for Bacteria Eating the Titanic
.
Harmful effects of bacteria.
Can Bacteria Get Sick?
How to prevent diseases.Vaccinations.
Antibiotics.Wash hands after using bathroom or whenever dirty.
Cook food properly.
Store food properly.Cover mouth when sneezing, coughing.
Click here for Germs.
Click here for How Dirty are Bathrooms
?`
How to prevent diseases.
Click here for the Proper way to Use TP
.
Click here for the Surprise Toothbrush
.
Click here for the Five-Second Rule
.
When you see a pond, you see a lot of life!
Photo source: Hobo’s Pond B&B
Much of it, you can’t see!
It’s too small for you to see.
To see it, you will need a microscope.
This is the world of the protozoan (protist).
Photo source: University of Winnipeg, Dr. Simmons’ protist webpage
All protists live in water.
Click here for Intro to Protists.
Let’s examine three different examples of protozoans.
The Amoeba
The amoeba is among the most primitive of all organisms.
The amoeba has an irregular shape.
(In other words, its shape always changes.)
Click here for the amoeba video clip
.
It moves using a pseudopod (false foot).
It’s clear (you can see through it).
The amoeba is a consumer.
Click here for the amoeba video clip
.
The Paramecium
The paramecium is an oval shaped protozoan.
It moves using tiny hair-like appendages called cilia.
Click here for the paramecium video clip
.
It is a pale, translucent color.
It is a consumer.
The Euglena
The Euglena is an oval-shaped protozoan.
It moves using a tail-like structure called a flagellum.
The Euglena is green.
It is primarily a producer, but can be a consumer.
Click here for the video clip.
Click here Monsters Inside Me: Eaten From The Inside Out
.Protist Review
Algae
Algae can be microscopic to 150 feet long.
Algae are producers.
Algae are an important food source for sea life.
Source: eFuse.com
Algae provide over 50% of the oxygen we breathe.
Benefits of AlgaeUsed in …
livestock feed. cosmetics. prescription drug production. identifying possible
environmental problems.
Benefits of AlgaeFood Production
Sushi
Ice cream Salad dressing
Syrup (thickener)
Fungi
Fungi are consumers. (Must find and eat food.)
Eats by absorbing food.
Decomposer (feeds on and breaks down dead plant or animal
matter).
Can be from single-celled to largest organism alive.
Can’t move.
Examples.MushroomsTruffles.
A mushroom like fungus that grown underground; primarily found in Europe; a highly valued food.
Examples.Lichen.
Fungus often found as white or yellow patches on old walls, etc.
Benefits of Fungi
Used to make chemicals used in manufacturing.
Produce antibiotics (example – penicillin).
Clean the environment.
Food production.Benefits of Fungi
CheeseMushroomsYeast
Truffles
Soy sauce
Click here HowStuffWorks: Bread Making.
Harmful Effects of FungiCauses 70% of all crop diseases.
Diseases in humans.Respiratory (lung) diseases
(example – pneumonia).
Harmful Effects of Fungi
Athlete’s foot.
Diseases in humans.
Ringworm (makes a raised round circle that looks like it was caused by a worm).
When is Cheese Mold Good or Bad?
The presentation ends here.