unit #3 quiz #3 2013-2014
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Unit #3 Quiz #3 2013-2014. Grade:. «grade». Aquatic Science. Subject:. «date». Date:. 1. Which of the following letters represent the same element/compound in the carbonate buffering system:. A. B and D. B. G and H. C. F and E. D. C and D. 2. - PowerPoint PPT PresentationTRANSCRIPT
Unit #3 Quiz #3 2013-2014
Grade:«grade»
Subject:Aquatic Science
Date:«date»
1 Which of the following letters represent the same element/compound in the carbonate buffering system:
A B and D
B G and H
C F and E
D C and D
2 All of the following are reasons why bioremediation is being pursued as a viable method of spill clean up, EXCEPT:
A It is relatively cheap when compared to other methods
B Microbes can easily break down xenobiotics
C Non-mobile organisms such as plants can be used to remove contaminants without having to worry about losing track of your organisms.
D Over 90% of materials that are considered hazardous can be biodegraded.
3 When considering the carbonate buffering system, all of the following reactions involve hydronium, EXCEPT:
A HCO3- --> CO3
2-
B CO32- --> Limestone
C H2CO3 --> HCO3-
D CO32- --> HCO3
-
4 Prochlorococcus are
A responsible for 90% of the net primary production
B responsible for 50% of the net primary production
C responsible for 50% of cellular respiration in the ocean
D mostly barophilic
5 The removal of toxins, such as mercury & petroleum oil, by natural or man-made microbes is called:
A bioaccumulation
B remedioaccumulation
C accumuloremediation
D bioremediation
6 Which of the following is reason why xenobiotics can be more difficult to break down naturally:
A Xenobiotics were designed to increase our fuel efficiency, thus they burn well.
B Xenobiotics are known to bioaccumulate in small bodies of water.
C Xenobiotics are relatively cheap to clean up.
D Xenobiotics have never existed in nature, thus there is no naturally occurring microbe to break it down.
7 Approximately _______% of the planet's water is fresh water.
A 2.5
B 10
C 25
D 46
8 Which of the following is a likely result of a massive increase in biochemical oxygen demand of a body of water:
A Asphyxiation of higher level organisms such as fish
B Asphyxiation of photosynthetic organisms
C An increase in higher level organisms such as fish
D An increase in higher level organisms such as dolphins and whales
9 Which of the following would be found on a hydrothermal vent:
A A psychrophilic bacterium
B A psychrotolerant bacterium
C A barophilic bacterium
D A barotolerant bacterium
10 The majority of water consumed by individuals as well as agriculture in the United States is:
A Glacial melt
B Groundwater
C Permafrost
D Desalinated ocean water
11 Which of the following reactions is responsible for fixing nitrogen:
A NH4+ --> NO2
-
B NO2- --> NO3
-
C NO3- --> N2
D N2 --> NH3
12 All of the following are ways that contaminants can get into a water supply, EXCEPT:
A chemicals leaking from an underground waste storage tank
B vapors leaking from a surface waste storage tank that condences into groundwater
C pesticides running off from an industrial farm and travelling into a nearby river
D multiple homes and businesses getting their well water from the same source of groundwater
13 CO32- is
A carbonate
B bicarbonate
C carbonic acid
D carbon dioxide
14 All of the following are reasons why bacteria form biofilms EXCEPT:
A Bacteria excrete adhesive cells to a surface to prevent the colony from being swept away
B Bacterial biofilms allow for colonies to grow large enough to prevent phagocytosis
C Bacterial biofilms alter the BOD of a system to prevent asphyxiation of higher level organisms
D Bacterial biofilms allow the organisms to remain in favorable niches
15 Which of the following describes alkalinity:
A A system’s ability to deal with the addition of a catalystB A system’s ability to deal with the addition of hydroxide
C The sum of all hydronium and hydroxide during the dissociation of water molecules
D The sum of equivalents of all species that can neutralize an acid