2.3 Non-Glucose Alternatives Flashcards
What alternate sugars can bacteria use for energy?
fructose and lactose
Where is fructose commonly found?
fruit
Where is lactose commonly found?
milk
What can be used as alternate sources of energy?
proteins
polysaccharides
lipis
What are polysaccharides?
molecules that are usually too large to be transported across the plasma membrane
What do microbes need to do in order to use polysaccharides as energy?
secrete enzymes that can degrade the polymer into small subunits
What is needed for the microorganism to ensure maximal absorption of polysaccharides?
direct contact
How are proteins broken into smaller pieces?
proteases
Why are amino acids a rich source of nutrients?
source of carbon, energy, nitrogen, and sulfur
Why are lipids rich in energy?
contain many reduced carbon molecules
What is responsible for separating fatty acid chains from glycerol backbone?
lipases
What happens to the glycerol backbone of lipids?
processed for carbon and energy
What happens to the fatty acid chain of lipids?
degraded via B-oxidation into acetyl-CoA which feeds directly into Krebs cycle
How many molecules of ATP are produced for each lipid derived carbon atoms?
48
