Instructors: see notes section below this slide..
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Transcript of Instructors: see notes section below this slide..
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Instructors: see notes section below
this slide.
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More plant-like
(producer)
More animal-like(consumer)
Gets carbon from atmosphere Gets carbon from organic materials
Autotroph Heterotroph
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Bacteria on head of pin © 1999 The Centre for Microscopy and Microanalysis
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!
© ARS
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Photo by Tomaž Vavpotič
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Photo courtesy of NOAA
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Plant-like: stationary, uses sunlight and CO2 for energy and food (photosynthesis), photoautotroph
Cyanobacteria
NASA
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Bacterial flagella
Dartmouth electron microscope facility
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Paramecium
Wikipedia
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Amoeba
Animal-like: Pseudopodia for movement and feeding
Dr. Ralf Wagner
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Animal-like:Moves and searches for own food
Copyright Shannan Muskopf
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Euglena
Plant and Animal-like:Can use flagella to search for food
or Can produce food through photosynthesis
(mixotroph)
Copyright 1995-2005 Protist Information Server
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• All single celled and do not have a nucleus • Bacteria can be both helpful and harmful
• Bacteria engage in chemical warfare with each other:(Streptomycin)
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Source: NASA
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Stromatolites
© Jake Brumby
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Stromatolites
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Cyanobacteria
Dr. Ralf Wagner
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A bloom of cyanobacteria
Baltic Sea east of Sweden on Aug 2, 1999.
NASA
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CO2
Waste
Food nutrients
Biodegradation
Dead organic matter
Respiration
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Bioremediation for an oil spill
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CO2
Waste
Food nutrients
Biodegradation
Dead organic matter
Respiration
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(that give us grief)
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Lyme disease, a bacterial disease transmitted by ticks
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25% of world population dies
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Cholera(Vibrio cholerae)
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Haemophilus influenzae (Pneumonia)
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Anthrax
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Notes from 11/28
Microorganisms Anything too small to see without magnification
3 types of microorganisms Bacteria, protists, fungi
2 major ways to get food Autotroph, Heterotroph
Autotroph Gets food (carbon) from the atmosphere (CO2),more plant-like, known as producer.
Heterotroph Gets food by ingesting other things, more animal like, known as consumer.
Microorganism size range from very small to large (fly’s head)
Microorganism habitat From bottom of sea to Salt Lake and everything in-between
Movement Some are stationary, others move by cilia (small hairs), flagella (longer tail) or pseudopodia (extensions of outer membrane)
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Notes from 11/28
Bacteria Single celled, no nucleus
Good bacteria Cyanobacteria produced our oxygen, other bacteria break down waste, leaves and oil
Bad bacteria Tuberculosis, cholera, the plague, anthrax
Protists Single or multi-celled with nucleus, often live in ponds
Good protists Dinoflagellates and diatoms are the base of food chain
Bad protists …..
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• Both single-celled and multi-celled organisms, most have a nucleus • Some protists produce their own food through photosynthesis, others consume their food
• A great place to find many protists is in a local pond • Some protists are helpful to other living things, while other protists are disease causing.
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A dinoflagellate
Dr. Ralf Wagner.
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Bioluminescent dinoflagellates
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Diatoms
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(that are pesky)
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Red tide(Dinoflagellates)
P. Alejandro Díaz
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Human blood cell infected with Plasmodium
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Giardia lamblia, a diplomonad
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• Neither plant nor animal, have characteristics of both
• Consume food by absorbing nutrients from whatever they are growing on
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Penicillium mold
Hyphae
Spores
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Fungal production of an antibiotic
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Budding yeast
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CO2
Waste
Food nutrients
Biodegradation
Dead organic matter
Respiration
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ARS
CO2
Waste
Food nutrients
Biodegradation
Dead organic matter
Respiration
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(fungi without the fun)
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The common mold Rhizopus decomposing oranges
ARS
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Athletes foot
ARS
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Microorganism treasure hunt:
What questions do you have about microorganisms living around school?
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1.
2.3.
ARS
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ARS