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MICRO TEST 3 DR AL LSUE CERTIFICATION EVALUATION EXAMS COMPLETE QUESTIONS VERIFIED FULL SOLUTION

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MICRO TEST 3 DR AL LSUE CERTIFICATION EVALUATION EXAMS COMPLETE QUESTIONS VERIFIED FULL SOLUTION

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MICRO TEST 3 DR AL LSUE CERTIFICATION
EVALUATION EXAMS COMPLETE
QUESTIONS VERIFIED FULL SOLUTION

⩥ ~ lakes, streams, shallow wells
~ its microbial population may reflect:
~ the air thru which rain has passed
~ the meat packing plant by which stream flows
~ the sewage treatment facility
~ microorganisms play significant role in aquatic life cycle by
supplying food for small fish and digesting dead plants and animals.
Answer: surface water


⩥ contains chemical or biological poison or infectious agent.
Answer: contaminted


⩥ contains chemical or biological poison or infectious agent, but the
poison or agency is obvious; unpleasant taste, smell, and appearance.
Answer: polluted


⩥ water is fit for consumpion.
Answer: potable

,⩥ water can absorb light of certain
wavelengths
photosynthesis
extremely efficient solvent
pH below 2.4
dissolve sulfur
nitrogen oxide.
Answer: on board


⩥ low in organic nutrients --- limit the number of bacteria that are
present.
Answer: unpolluted water


⩥ contains large amonts of organic matter from sewage, feces, industrial
source.
Answer: polluted water


⩥ 4 types of bacteria found in polluted water.
Answer: Coliforms, Streptococcus, Proteus, Pseudomonas


⩥ halophilic "salt-loving" microorganisms

,psychrophilic
basophilic "pressure-loving".
Answer: marine water


⩥ 3 types of water pollution.
Answer: physical, chemical, biological


⩥ type of water pollution
sand, soil, cloudy
cyanobacter bloom.
Answer: physical


⩥ type of water pollution
inorganic and organic waste.
Answer: chemical


⩥ type of water pollution
main concern
develops from microorganisms that enter water from:
~ human wastes
~ food processing and meat-packaging plants
~ medical facilities.

, Answer: biological


⩥ refers to the amount of oxygen that microorganisms required to
decompose the organic matter in water.
Answer: biological oxygen demands


⩥ 2 sources of pathogens.
Answer: feces/urine etiological agent


⩥ 4 types of waterborne pathogens.
Answer: anaerobic dysentery, giardiasis, cryptosporidiasis, ascariasis


⩥ 2 types of enteric viruses.
Answer: infectious hepatitis A enteroviruses


⩥ 5 types of bacteria found in water.
Answer: Salmonellosis, Shingellosis, Cholera, Leptospira, Tularemia


⩥ waste water treatment is broken down into what?.
Answer: primary, secondary, tertiary


⩥ type of waste water treatment

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