ECCB 303 EXAM 2 VERIFIED & ACCURATE STUDY
GUIDE
Photosynthesis - Answers - Light + 6CO2 + 6H2O -> C6H12O6 + 6O2
During photosynthesis 6CO2 - Answers - Low energy
inorganic C
Oxidized C
After photosynthesis C6H12O6 - Answers - Glucose/sugar
High energy
Organic C
Reduce C
Autotroph - Answers - An organism that makes its own food
Photosynthesis stores light energy in - Answers - C-C bonds
light reactions - Answers - H2O + Photons -> ATP + NADPH
The result of light reactions ATP and NADPH - Answers - ATP-Nucleotide
NADPH- cofactor
Contains a lot of P plus N
Provide energy for Calvin cycle
The Calvin cycle - Answers - CO2 + RuBP -(enzyme RUBISCO)-> C6
RUBISCO - Answers - The most abundant protein on earth.
Contains lots of N
Photosynthesis evolved 3 to 2 billion years ago - Answers - Not effective, but has not
changed much since it evolved
Drastically altered the composition of the atmosphere (CO2 decrease O2 increase)
Provide provides energy for life on earth
Created conditions for fire on earth
Respiration - Answers - Energy for life, both auto tropes and heterotrophs
C6H12O6 + 6O2 -(oxidation)-> 6CO2 + 6H2O + energy (one glucose yields 38 ATP
used for metabolic processes)
Primary production - Answers - The amount of organic C that a primary producer, a.k.a.
plant, creates in a given length of time
gc/m^2/d
Mass/area/time
, FLUX/rate
Biomass - Answers - Total mass of plant material at a point in time
gc/m^2
Pool/stock
GPP (gross primary production) - Answers - All CO2 fixed over a period of time
FLUX
CO2 -GPP-> primary producer by a mass
NPP (Net Primary Productivity) - Answers - Rate that organic C is available for
processes beyond the energy, cost (respiration) of the plant
FLUX
NPP= - Answers - GPP-Ra
Ra - Answers - autotrophic respiration
Rh - Answers - heterotrophic transpiration
- most Rh = decomposer, microbes & their predators
Re - Answers - Ecosystem respiration
All respiration in the ecosystem
FLUX
Re= Ra + Rh
NEP - Answers - Net ecosystem production
FLUX can be positive or negative
NEP does not include all sources and sinks of C, only the flux of CO2
NEP= GPP - Ra -Rh
NEP= GPP - Re
NEP= NPP - Rh
NEE - Answers - Net ecosystem exchange
Another term for NEP - exchange of CO2 between ecosystem and atmosphere
dCorg - Answers - Organic carbon accumulation
FLUX
Function of NEP, import, export, and non-biological oxidation (fire or photo oxidation)
Important for calculating C budgets
Other factors than NEP that determine if ecosystem is a C source or C-sink - Answers -
Fire
Timber harvest
Haying
Other imports/exports, including consume movement (livestock)
GUIDE
Photosynthesis - Answers - Light + 6CO2 + 6H2O -> C6H12O6 + 6O2
During photosynthesis 6CO2 - Answers - Low energy
inorganic C
Oxidized C
After photosynthesis C6H12O6 - Answers - Glucose/sugar
High energy
Organic C
Reduce C
Autotroph - Answers - An organism that makes its own food
Photosynthesis stores light energy in - Answers - C-C bonds
light reactions - Answers - H2O + Photons -> ATP + NADPH
The result of light reactions ATP and NADPH - Answers - ATP-Nucleotide
NADPH- cofactor
Contains a lot of P plus N
Provide energy for Calvin cycle
The Calvin cycle - Answers - CO2 + RuBP -(enzyme RUBISCO)-> C6
RUBISCO - Answers - The most abundant protein on earth.
Contains lots of N
Photosynthesis evolved 3 to 2 billion years ago - Answers - Not effective, but has not
changed much since it evolved
Drastically altered the composition of the atmosphere (CO2 decrease O2 increase)
Provide provides energy for life on earth
Created conditions for fire on earth
Respiration - Answers - Energy for life, both auto tropes and heterotrophs
C6H12O6 + 6O2 -(oxidation)-> 6CO2 + 6H2O + energy (one glucose yields 38 ATP
used for metabolic processes)
Primary production - Answers - The amount of organic C that a primary producer, a.k.a.
plant, creates in a given length of time
gc/m^2/d
Mass/area/time
, FLUX/rate
Biomass - Answers - Total mass of plant material at a point in time
gc/m^2
Pool/stock
GPP (gross primary production) - Answers - All CO2 fixed over a period of time
FLUX
CO2 -GPP-> primary producer by a mass
NPP (Net Primary Productivity) - Answers - Rate that organic C is available for
processes beyond the energy, cost (respiration) of the plant
FLUX
NPP= - Answers - GPP-Ra
Ra - Answers - autotrophic respiration
Rh - Answers - heterotrophic transpiration
- most Rh = decomposer, microbes & their predators
Re - Answers - Ecosystem respiration
All respiration in the ecosystem
FLUX
Re= Ra + Rh
NEP - Answers - Net ecosystem production
FLUX can be positive or negative
NEP does not include all sources and sinks of C, only the flux of CO2
NEP= GPP - Ra -Rh
NEP= GPP - Re
NEP= NPP - Rh
NEE - Answers - Net ecosystem exchange
Another term for NEP - exchange of CO2 between ecosystem and atmosphere
dCorg - Answers - Organic carbon accumulation
FLUX
Function of NEP, import, export, and non-biological oxidation (fire or photo oxidation)
Important for calculating C budgets
Other factors than NEP that determine if ecosystem is a C source or C-sink - Answers -
Fire
Timber harvest
Haying
Other imports/exports, including consume movement (livestock)
