lecture quiz
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Lecture Quiz. 1 : A water sample reveals that the following chemical contaminates were found in it ( Phosphates, Nitrates, and Sulfides). Based on this you can conclude that the water body is being contaminated by what type of source ? - PowerPoint PPT PresentationTRANSCRIPT
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Lecture Quiz1: A water sample reveals that the following
chemical contaminates were found in it (Phosphates, Nitrates, and Sulfides).
Based on this you can conclude that the water body is being contaminated by what type of source?
2: A water sample reveals that the following chemical contaminates where found in it (Copper and ph value 4.5). Based on this
you can conclude that the water body is being contaminated by what type of source?
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Lecture Quiz1. A water sample reveals that the following
chemical contaminates where found in it (Phosphates, Nitrates, and Sulfides). Source - SEWAGE
2. A water sample reveals that the following chemical contaminates where found in it (Copper and ph value 4.5). Source - INDUSTRIAL/HAZARD WASTE
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FACT - Biological contamination of surface water is morecommon than chemical
contamination.
FACT - Biological contaminates cause more illnesses
than a chemical
contaminate.
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Protozoa: Single cell organisms.
Types1. Plantlike (Autotrophs)
2. Animal (Heterotrophs)
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Plantlike Protozoa (Autotrophic). T hey can produce their own food like a land plant because they have the chemical, chlorophyll that can convert sunlight, water, and carbon dioxide into glucose sugar.
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Euglena
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Volvox: A fresh water algae that form into a spherical colony.
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Algae
Algae bloom = rapid growth of algae in a surface water body like an ocean, lake, or pond due to overabundance of food (nutrients).
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Alga Bloom (The Series of Effects) A thick layer of algae form near the
surface blocking sunlight from reaching plants below. This will cause these plants to die and sink to the bottom of the water source.
Decomposers (aerobatic bacteria) breakdown the dead organism and begin to overpopulate using up the dissolved oxygen (DO).
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Alga Bloom (The Series of Effects)
Fish, crustaceans, and shellfish suffer due to oxygen deprivation and eventually will die from suffocation if they remain in the area of the alga bloom..
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Alga bloom on the Colorado River
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Dead fish from an ocean alga bloom (Red Tide).
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Animal Protozoa (Heterotroph): 1. Amoeba: * A shapeless one-celled mass. * Most amoeba are not harmful to
humans except the Dysentery Amoeba.
* This amoeba carries the disease dysentery
which causes diarrhea and vomiting. The disease is transmitted
through feces material that was in the water or
food.
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Amoeba
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2. ParameciumA single cell protozoa with
cilia (hair- like) which they use for locomotion.
Plasm odium(D)
Paramecium causes the disease malaria and is
transmitted from the bite of a mosquito.
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Paramecium
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Bacteria versus Virus
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Bacteria
E. Coli: A bacteria found in the intestines of animals and humans.
The presence of E Coli in water is a strong
indication of recent sewage or animal waste contamination.
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Viruses
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The Cycle of a Virus
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How the West Nile Virus is transferred
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Viruses
West Nile Virus
- The virus is carried by a species of mosquitoes.
-Affects people with weak immune systems
•Infants
•Elderly
•People suffering from illness