Module 2: Microbial Metabolism Flashcards
refers to the sum of all chemical reactions within a living organism, more specifically, within a cell
Metabolism
a kind of energy-balancing act that occurs within a cell, with some metabolic reactions releasing energy and other metabolic reactions requiring energy
Metabolism
what is required by the organism for growth, reproduction, sporulation, movement and the active transport of substances across membranes.
energy
any molecule that is a nutrient, an intermediary product, or the end product in a metabolic reaction
Metabolite
what are the 2 Classes of Chemical Reactions
Anabolic Reaction
a chemical reaction that us energy-consuming
Anabolic Reaction
a process that utilize energy stored in ATP to synthesize and assemble the subunits or building blocks of macromolecules that make up the cell
Anabolic Reaction
what do anabolic reaction need in order to form ATP
energy
a chemical reaction that is Energy-yielding
Catabolic reaction
- the chemical reaction that breaks down complex organic compounds with the release of energy and is stored in ATP.
catabolic reaction
what reaction is the cell’s major source of energy
catabolic reaction
what is the difference between catabolic and anabolic reaction
anabolic - requires energy to produce ATP and to construct molecules from smaller units
catabolic - breakdowns complex organic compounds with the release of energy and stored in atp; produces energy for anabolic use
what are the energy sources that function as electron donor
- Energy sources (electron donor): Glucose, Elemental Sulfur, Ammonia, Hydrogen gas or light
when oxygen serves as the final electron acceptor.
- Aerobic respiration
inorganic substances such as NO3 or SO4 ions serve as the final electron acceptor
- Anaerobic respiration
organic compounds serve as the final hydrogen acceptor.
- Fermentation
serves as the main carbohydrate source for bacteria
- Glucose
what are the degradation pathways
- Embden-Meyerhoff Parnas Pathway (EMP)
- Entner-Duodoroff Pathway (EDP)
- Warburg-Dickens Hexose Monophosphate Pathway (HMP)
- also called Glycolytic or Anaerobic Pathway or Fermentative Pathway
Embden-Meyerhoff Parnas Pathway (EMP)
- used primarily by anaerobic bacteria and to some degree by facultative anaerobic bacteria as well
Embden-Meyerhoff Parnas Pathway (EMP)
steps for Embden-Meyerhoff Parnas Pathway (EMP)
GLUCOSE > Glucose 6-phosphate > fructure 6- phosphate > fructose 1.6-phosohte > 1,3 phosphoglycerate > Pyruvic acid
= 2H > Lactic acid
= 2H > mixed acids
