MCB Final Exam Questions With Correct
Answers
Using microbes to break down or remove toxic wastes in water and soil is called -
answerbioremediation
The breakdown of man-made compounds by decomposers is called - answerbiodegradation
Which is the first step in water purification? - answerSedime...
Using microbes to break down or remove toxic wastes in water and soil is called -
answer✔bioremediation
The breakdown of man-made compounds by decomposers is called - answer✔biodegradation
Which is the first step in water purification? - answer✔Sedimentation
In which step of water purification does water move through sand beds and activated charcoal? -
answer✔filtration
Primary sewage treatment includes - answer✔skimming
The final step of sewage treatment before release into the environment is - answer✔chlorination
What chemical is used in both water purification and sewage treatment to give long-term
disinfection? - answer✔chlorine
An infectious disease typically seen among animals that may be acquired by humans is referred
to as - answer✔zoonotic
What two strategies are used in the United States to ensure potable drinking water? -
answer✔Filtration and chlorination
One of the goals of wastewater treatment is to __________ the biological oxygen demand (BOD)
- answer✔decrease
The primary phase of waste water treatment _______________ - answer✔separates solid from
liquid wastes
The secondary phase of wastewater treatment is largely - answer✔biological
The primary phase of wastewater treatment is largely - answer✔physical
Use of a trickling filter that sprays wastewater over rocks coated with biofilms which aerobically
degrade organic matter is an example of the ____________ - answer✔secondary phase of
wastewater treatment
The activated sludge step in wastewater treatment is an example of the
__________________________ - answer✔tertiary phase of wastewater treatment
Which of the following may be removed by tertiary water treatment? - answer✔All of the
choices are correct
Agricultural water run-off, rich in nitrates, ammonia, and phosphates, may be treated to remove
these chemicals so that the treated water does not support algal blooms. Such treatment is an
example of _________________. - answer✔tertiary treatment
Which wastewater treatment process can generate methane which to be used as a fuel? -
answer✔Anaerobic digestors
Backyard composting in either a pile or a bin is generally an _______________ process. -
answer✔aerobic
The decomposition that occurs in a sanitary landfill is largely _________ - answer✔anaerobic
Which term is used to describe a novel, chemically synthesized compound that does not occur
naturally but can be made to be biodegradable? - answer✔Xenobiotic
Which of the following has been chemically modified to make it biodegradable? -
answer✔Laundry detergent
Which of the following activities/processes depends upon the activities of microbes? -
answer✔All of the choices are correct
Which term would be used to describe a compound totally resistant to microbial attack? -
answer✔recalcitrant
Disruption of the One Health balance can be caused by - answer✔All of the choices are correct
The concept of One Health demonstrates the interrelationship between ______________ -
answer✔human health, animal health, and environmental health
Lactobacillus in the female reproductive tract ____________ - answer✔is protective
Which of the following is not a characteristic of the normal biota of the female reproductive tract
during child bearing years? - answer✔vaginal pH is neutral
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