Topic8 Fermentation Flashcards
Oxygen solubility in water is?
Low- O2 is not very soluble in water
Oxygen solubility vs. temp
O2 solubility goes down as temperature goes up
Write equation for breakdown of glucose
What is the stoichiometry of glucose to oxygen?
C6H12O6 + 6O2 -> 6CO2 + 6H2O
1 glucose: 6 oxygen
Oxygen enters anaerobic ecosystem via ________
diffusion
why does macroscopic movement of water fall quickly at the depth of what?
because of the viscosity of water, at depth 0.5mm above sediment line
At about what depth into the sediment does the oxygen concentration fall to about 0?
2.5mm into the sediment
The depth fo 0.5mm above water divides areas dominated by what?
dominated by mixing and convection, vs. domination by diffusion
Proportionality relationship between diffusion time and distance is?
time is proportional to square of the distance
How are fallen leaves + other organic matter dealt with at depths in which no oxygen diffusion is occuring?
Anaerobic consumption of organic matter occurs
How is a laboratory bacterial colony an example of anaerobic environment?
the colony consists of cells that are piled up on top of one another. Oxygen diffuses from above, nutrient from below. There will be a point where there is more nutrients than oxygen, and you end up with anaerobic zones. The centers of the colonies are anoxic.
Compare the rate of aerobic respiration with rate of diffusion
The rate of aerobic respiration exceeds rate of diffusion
