MCB 3023 MODULE 3.2 AND 3.3 QUESTIONS WITH
VERIFIED ANSWERS
flux - Answers - is the movement fo elements between reservoirs
-reaching equilibrium over the long term
elements are contained reservoirs - Answers - terrestrial, aquatic, atmospheric
radioisotope tracer - Answers - molecules labeled with radioactive elements prior to
release in a mesocosm
-which can determine the movement of labeled elements in a mesocosms which can
inform researchers on cycling methods
mesocosm - Answers - outdoor experimental system that examines the natural
environment under controlled conditions
A balance is maintained between _____ and _____ carbon reservoirs - Answers -
Organic and inorganic
-photosynthesis and respiration maintain balance
-humans disrupt this
if CO2 fixation exceeds respiration - Answers - organic matter accumulates
fermentation processes produce partially partially oxidized organic end products -
Answers - these can serve as nutrients for other organisms
Methanogenesis - Answers - production of methane as a byproduct of biodegradation of
organic carbon in an anoxic environment
hydrogenotrophic methanogens - Answers - produce CH4 from CO2 and H2
acetotrophic methanogens - Answers - produce CH4 from acetate (CH3COO-)
Methanotrophy - Answers - metabolism of CH4 into other forms
Aerobic methods of Methanotrophy - Answers - dependent on MMO enzyme
Monooxygenases - Answers - catalyze a reaction in which one atom of O2 is
incorporated in the product and the other in H20
Nitrogen cycle key steps - Answers - Nitrogen fixation
Nitrification
VERIFIED ANSWERS
flux - Answers - is the movement fo elements between reservoirs
-reaching equilibrium over the long term
elements are contained reservoirs - Answers - terrestrial, aquatic, atmospheric
radioisotope tracer - Answers - molecules labeled with radioactive elements prior to
release in a mesocosm
-which can determine the movement of labeled elements in a mesocosms which can
inform researchers on cycling methods
mesocosm - Answers - outdoor experimental system that examines the natural
environment under controlled conditions
A balance is maintained between _____ and _____ carbon reservoirs - Answers -
Organic and inorganic
-photosynthesis and respiration maintain balance
-humans disrupt this
if CO2 fixation exceeds respiration - Answers - organic matter accumulates
fermentation processes produce partially partially oxidized organic end products -
Answers - these can serve as nutrients for other organisms
Methanogenesis - Answers - production of methane as a byproduct of biodegradation of
organic carbon in an anoxic environment
hydrogenotrophic methanogens - Answers - produce CH4 from CO2 and H2
acetotrophic methanogens - Answers - produce CH4 from acetate (CH3COO-)
Methanotrophy - Answers - metabolism of CH4 into other forms
Aerobic methods of Methanotrophy - Answers - dependent on MMO enzyme
Monooxygenases - Answers - catalyze a reaction in which one atom of O2 is
incorporated in the product and the other in H20
Nitrogen cycle key steps - Answers - Nitrogen fixation
Nitrification
