Post on 27-Dec-2015
Unit #3 Exam Review Quiz 2014, 2015
Grade:«grade»
Subject:«subject»
Date:«date»
1 Microbes account for about ________% of all the biological mass on Earth.
A 98%
B 75%
C 50%
D 22%
2 Which chemical is commonly used to disinfect American water sources
A Ethyl-alcohol
B A combination of chloride & alcohol
C Fluorine
D Chlorine
3 Which of the following is considered an indicator species:
A daphnia
B hydra
C diatoms
D amoebas
4 Which of the following describes a microbe's prime niche
A An environment that has a high amount of competition for resources
B An environment that has enough nutrients for the microbe to survive
C An environment that has enough nutrients for the microbe to thrive
D An environment that lacks any usable nutrients and is inhospitable to microbes
5 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
6 Which of the following would thrive on a hydrothermal vent:
A A psychrophilic bacterium
B A psychrotolerant bacterium
C A barophilic bacterium
D A barotolerant bacterium
7 The following image demonstrates:
A high species richness but low abundance
B high species abundance but low richness
C high species richness and high species abundance
D low species richness and low species abundance
8 H2CO3 is
A carbonate
B bicarbonate
C carbonic acid
D carbon dioxide
9 Out of the small percentage of the planet's water that is fresh water, what percent can be found in ground water sources such as aquifers:
A 68%
B 50%
C 44%
D 30%
10 What percent of aquatic species are considered benthic?
A 5%
B 25%
C 60%
D 98%
11 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
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 condenses 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 A bacterium that undergoes a period of severe stress will form a ________ to keep its offspring alive.
A cyst
B capsid
C oocyst
D spore
14 At a neutral pH, which molecule is in the highest concentration
A carbonate
B bicarbonate
C carbonic acid
D carbon dioxide
15 CO3
2- is
A carbonate
B bicarbonate
C carbonic acid
D carbon dioxide
16 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.
17 HCO3
- is
A carbonate
B bicarbonate
C carbonic acid
D carbon dioxide
18 Which of the following describes alkalinity:
A A system’s ability to deal with the addition of a catalyst
B 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
19 Which of the following is an example of molecular dissociation:
A H+ + OH- --> H2O
B H2O --> H+ OH-
C Fe + CuSO4 --> Cu + FeSO4
D AgNO3 + HCl --> HNO3 + AgCl
20 Which of the following reactions is responsible for fixing nitrogen:
A NH4
+ --> NO2
-
B NO2
- --> NO3
-
C NO3
- --> N2
D N2 --> NH4
+
21 All of the following are true about chlorine & chlorime byproducts (DBPs) EXCEPT:
A it can destroy bacteria, viruses, and difficult to kill parasites such as Giardia
B there is evidence that the byproducts of chlorine can cause birth defects
C it can cause large/accelerated gestational age/growth
D it can cause neural tube defects
22 Methemoglobinemia causes ________ to bind to _______, blocking the uptake of oxygen & causing problems such as “blue baby” syndrome.
A Ammonium, myoglobin
B Ammonia, hemoglobin
C Nitrate, myoglobin
D Nitrite, hemoglobin
23 Which of the following is NOT a source of nitrates in water sources:
A A leaky septic system
B Runoff from an organic farm
C Animal waste
D Water plants & algae
24 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
25 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.
26 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
27 What is the ratio of carbon to nitrogen to phosphorus that is ideal for bacterial growth:
A 1:10:100
B 100:10:1
C 100:1:10
D 10:1:100
28 The following image demonstrates:
A high species richness but low abundance
B high species abundance but low richness
C high species richness and high species abundance
D low species richness and low species abundance
29 You discover an Achaea bacteria that is both barophilic and psychrophilic. This organism’s prime niche is most likely:
A At the bottom of the ocean near a hydrothermal vent
B At the bottom of the ocean far away from a hydrothermal vent
C On the surface water of the ocean near shore
D On the surface water of the ocean away from the shore
30 In 2014, the EPA released a study that said _____ states had various (260) pesticides in their ground water.
A 15
B 33
C 42
D 48
31 Which of the following is FALSE about thermal pollution:
A An increase in temperature causes an increase in bacterial growth
B An increase in temperature yields an increase in secondary consumers
C An increase of temperature causes a decrease in DO
D Thermal pollution is often a result of using water sources to cool water/equipment associated with power plants
32 When a protozoan is stressed, it will form _______ as offpring.
A spores
B oocysts/cysts
C eggs
D capsids
33 Which of the following has crustaceans and cyclops as its intermediate host?
A Toxoplasmosis
B Salmonella
C Naegleria fowleri
D Dracunculiasis
34 How can you avoid exposure to Salmonella?
A Eating organic food
B Eating a diet heavy in eggs
C Thoroughly cooking meat
D Eating a vegetarian diet
35 If procholorcoccus were to suddenly vanish from the ocean, all of the following would be a likely consequence EXCEPT:
A atmospheric CO2 would rise
B oceanic dissolved oxygen would fall
C a large percent of the base of the oceanic food chain would vanish
D parasitic zooplankton would increase