Fill This Form To Receive Instant Help

Help in Homework
trustpilot ratings
google ratings


Homework answers / question archive / McMaster University BIO 2EE3 CHAPTER 14 1)What is the oxidation state of C in CO2 -2 b

McMaster University BIO 2EE3 CHAPTER 14 1)What is the oxidation state of C in CO2 -2 b

Biology

McMaster University

BIO 2EE3

CHAPTER 14

1)What is the oxidation state of C in CO2

    1. -2

b.   +4

c.     +2

  1. 0
  2. -4

 

  1. When considering biogeochemical cycles, the earth is divided into these three major reservoirs
    1. Ocean, terrestrial, and earth’s crust
    2. Atmosphere, terrestrial, and aquatic
    3. Atmosphere, earth’s crust, and land
    4. Ocean, freshwater, and terrestrial
    5. Terrestrial, aquatic, and earth’s crust

 

  1. Which carbon reservoir is most actively cycled?
    1. Ocean sediments
    2. Forest mulch
    3. Ocean waters
    4. Atmosphere
    5. Underground limestone

 

  1. In methane-producing environments large polymers are broken down by a consortium of microbes. This consortium includes
    1. Primary aerobic respiratory microbes and methanogens
    2. Sulfate-reducing microbes and methanogens
    3. Polymer hydrolyzing microbes, fermenters, and methanogens
    4. Obligate aerobic bacteria and methanogens
    5. Aerobic polymer hydrolyzing microbes and fermenters

 

  1. Many metabolic reactions in anaerobic environments are driven by methanogens because of the rapid utilization of this material during methanogenesis
    1. Nitrogen
    2. Formate
    3. CO2
    4. Hydrogen
    5. Sulfate

 

  1. Methanotrophs, in contrast to non-methanotrophic methylotrophs, contain this enzyme
    1. Methane lyase
    2. Methany carboxylase
    3. Methane drhydrogenase
    4. Methane kinase
    5. Methane monooxygenase

 

  1. The anaerobic oxidation of methane by some archaeons may occur syntrophically with these organisms
    1. Nitrogen fixing bacteria
    2. Iron-oxidizing bacteria
    3. Sulfate-reducing bacteria
    4. Denitrifying bacteria
    5. Nitrifying bacteria

 

  1. What is the oxidation state of nitrogen in ammonia?
    1. -3
    2. -1
    3. 0

d.   +1

e.   +3

 

  1. Which of these summarizes the overall process of denitrification?
    1.  

3

Ammonia → NO -
    1. N2 → NH3
    2.  

3

NO - → ammonia → biomass
    1.  

3                2

NO - → N
    1. Biomass → ammonia

 

  1. How can denitrification of soil be reduced?
    1. By adding lime to the soil
    2. By flooding the soil with water
    3. By adding potash to the soil
    4. By adding ammonia to the soil
    5. By keeping the soil well aerated

 

  1. What is the oxidation state of C in CH4?
    1. -1
    2. -4

c.     +2

d. -2

e. +1

 

  1. The main primary producers in aquatic environments are                 , while in terrestrial environments the main primary producers are                        
    1. Plants, microbes
    2. Microbes and plants contribute equally in both environments
    3. Microbes, plants
    4. Plants, plants
    5. Microbes, microbes

 

  1. Which of these would occur in an “ideal” food web
    1. CO2 consumption < organic C production
    2. Organic C production > CO2 production
    3. Organic C production < CO2 production
    4. Organic C production = CO2 consumption
    5. CP2 consumption > organic C production

 

  1. Which of these is true regarding soil humus
    1. Polymer of glucose
    2. Minor component of organic C in soil
    3. Quickly broken down by microorganisms
    4. Primarily inorganic in composition
    5. Degraded very slowly over time

 

  1. Which of these statements is TRUE regarding oxygen use and utilizers of methanogenesis?
    1. Aerobic, carried out by Archaea
    2. Anaerobic, carried out by Archaea
    3. Aerobic, carried out by Bacteria
    4. Anaerobic, carried out by Eukarya
    5. Anaerobic, carried out by Bacteria

 

  1. Methane utilization by methylotrophs is an environmentally important process. Why?
    1. The process prevents methane, a greenhouse gas, from entering the atmosphere
    2. The process prevents lakes from becoming anoxic
    3. Methane is toxic to fish
    4. Methane is a dead-end energy source
    5. Methane inhibits photosynthesis

 

  1. Which one of the following is NOT a reservoir for oxygen?
    1. CO2
    2. Atmosphere
    3. Water
    4. Hitrate
    5. Ammonia

 

  1. What is the oxidation state of nitrogen in nitrate?
    1. -3
    2. -1

c.     +1

d.   +3

e.   +5

 

  1. Which of these best describes nitrification?
    1. Chemoorganitrophic
    2. Heterotrophic
    3. Obligate anaerobic
    4. Phototrophic
    5. Chemolithotrophic

 

  1. Which industrial process is used for the production of ammonia for land application?
    1. Dalgarno
    2. Havel-Brill
    3. Haber-Bosch
    4. Anderson-Plamann
    5. Mattox

 

  1. What is the oxidation state of carbon in lactic acid (C3H6O3)?
    1. -2
    2. -4

c.     +2

d.   +4

e. 0

 

  1. Which of these is linked with production of cement for construction of highways?
    1. Decrease in limestone
    2. Decrease in fossil fuel consumption
    3. Decrease in sand
    4. Increase in atmospheric CO2
    5. Increase of atmospheric nitrogen

 

  1. Why is carbon dioxide considered a greenhouse gas
    1. Utilized by suspended microbes in atmosphere
    2. Absorbs heat attempting to escape atmosphere
    3. Fixed by plants during photosynthesis
    4. Produced during oxidation of organic compounds
    5. Found in high concentrations in greenhouses

 

  1. Bacteria that rely on methanotrophy for carbon and energy metabolism utilize one of these two unique pathways for carbon assimilation
    1. Acetyl-CoA pathway and the serine pathway
    2. Serine pathway and the ribulose monophosphate pathway
    3. Rbulose monophosphate pathway and the reductive TCA pathway
    4. Acetyl-CoA pathway and the ribulose monophosphate pathway
    5. Reductive TCA pathway and the acetyl-CoA pathway

 

  1. How can Type I and Type II methanotrophs be distinguished from one another?
    1. Gram stain and cellular shape
    2. Cellular shape and internal membrane structures
    3. C assimilation pathways and internal membrane structures
    4. C assimilation pathways and Gram stain
    5. Gram stain and internal membrane structures

 

  1. Which is the major nitrogen reservoir on Earth?
    1. Microbes
    2. Atmosphere
    3. Plants
    4. Organic matter in soil
    5. Ocean biomass

 

  1. Which of these summarizes the overall reaction for nitrification?
    1. Biomass → ammonia
    2.  

3                2

NO - → N
    1.  

3

NO - → ammonia → biomass
    1.  

3                        2

NO - → NO -
    1.  

3

Ammonia → NO -

 

  1. Why is the process of denitrification detrimental to the soil
    1. Leads to loss of organic matter from soil
    2. Leads to loss of utilizable nitrogen from soil
    3. Leads to loss of oxygen in soil
    4. Leads to production of toxic nitrogen intermediates
    5. Leads to acidification of soil

 

 

 

 

 

 

 

 

 

Option 1

Low Cost Option
Download this past answer in few clicks

5.83 USD

PURCHASE SOLUTION

Already member?


Option 2

Custom new solution created by our subject matter experts

GET A QUOTE

Related Questions