Fichas
Microbiology III
Fichas del conjunto (24)
- 1What are phototrophs?Organisms that perform photosynthesis
- 2What is common of these organisms?That they're also autotrophs, by using CO2 to make organic compounds
- 3Draw a diagram showing oxygenic photosynthesis by photolithotrophyAlgae + Green plants
- 4Draw a diagram showing anoxygenic photosynthesis by photolithotrophyPurple + Green bacteria
- 5What are chemoorganotrophs?Have many organic sources
[O] of organic compounds release energy, stored as ATP
Can be aerobic/anaerobic/facultative - 6What are chemolithotrophs?[O] inorganic compounds
Sulphur bacteria
Iron bacteria - 7What are the benefits of chemolithotrophs?No competition for food sources from chemoorganotrophs
Many COT waste products can be used by CLTs
Close association of the two are common - 8Draw a table showing the feeding habits of chemoorganotrophic and chemolithotrophic organismsbah
- 9What is the Nitrogen Fixation reaction?N2+8H*+8e-+16ATP -> 2NH3 + H2 + 16ADP + 16 Pi
- 10Can Eukaryotic organisms fix nitrogen?No
- 11Draw the nitrogen cyclen2->NH3->NO2-/NO3-
- 12How do nitrogen fixing bacteria occur?Either free living aerobic/anaerobic or in symbiosis with a root nodule
- 13What does Nitrogenase consist of?2 Distinct proteins,
Dinitrogenase which contains Fe +Mb
Dinitrogenase Reductase which contains Fe - 14What is the nitrification reaction?[O]
Nitrosomes:
NH4+ + 3O2 -> 2NO2- + 4H* + 2H2O + Energy
Nitrobacter:
2NO2- + O2 -> 2NO3- + Energy
Overall:
NH4+ -> NO2- -> NO3- - 15What is humus?Complex mix of organic compounds that have resisted rapid decomposition, derived mainly from plants and microorganisms.
- 16What is the role of microorganisms in the carbon cycle?Most important contributor of CO2 into the atmosphere
Microbes decompose dead organic material and humus - 17What is the denitrification reaction?NO3- -> N2
anoxic - 18What is the ammonification reaction?Organic N -> NH4*
- 19What is the annamox reaction?NO2- +NH3 -> 2N2 + H2O
Anaerobic ammonium oxidation - 20Draw the nitrogen cyclebheehehe ghee
- 21What is the sulphur oxidation reaction?H2S -> S -> SO4 2-
Aerobic/anerobic - 22Sulfate reductionanaerobic
SO4 2- -> H2S - 23Sulfur reductionAerobic
S -> H2S - 24Why does S have so many transformations?Due to varying S oxidation states
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- El usuario ha eliminado su información de asignaturas Fichas sobre Microbiology III, creado por Usuario eliminado el 21/01/2018.
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- Creado por J yadonknow · 21 ene 2018
- Copiado por J yadonknow · 21 ene 2018
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