Lecture 7 Flashcards
What is the function of the Krebs cycle
usually to completely oxidize carbon, oxidative decarboxylation
What is bioremediation?
use living organisms to break down and remove pollutants from the environment, such as cleaning oil spills and cleaning industrial sites.
What is metabolism?
The flow of energy
What is the most powerful form of energy?
Electricity (electrons)
All life requires:
- electron flow
- energy to move electrons
- materials to make cell parts (nutrients)
Macronutrients are
Major elements in cell macromolecules
Micronutrients are
trace elements necessary for enzyme function
Most microbes (_____) use organic carbon
heterotrophs
________ use carbon dioxide
Autotrophs
What is organic carbon vs inorganic carbon?
Organic carbon has a CH bond
Light energy excites electrons, excited m olecules are electron donors
Phototrophs
Chemicals are electron donors, oxidation of chemical
Chemotrophs
donation of electrons, loosing H, more positive charged
oxidation
accepting of electrons, gaining H, more negative charges
reduction
Saying to remember redox
OIL RIG
Inorganic molecules are electron donors
Lithotrophs
Organic molecules are electron donors
organitrophs
Electron acceptor is inorganic
respiration
Electron acceptor is organic
Fermentation
Some gasses pass freely through membranes, follows gradient of material. No carrier, no energy.
Passive diffusion
Transporters pass meterial into/out of cell, follows gradient of material. Requires a carrier, no energy.
Facilitated diffusion
Use ATP energy to pass metail into cell, transport material against gradient
ABC Transporters
Gradient of X pumps Y in same direction
Symport
Gradient of X pumps Y in opposite direction
Antiport
