Metabolic pathways Flashcards
Often occur in a multistep series or pathway, with each step catalyzed by an enzyme
Metabolic
Product of one reaction is often the________for the next, forming a ________or reaction
- Reactant(substrate)
-Linear reaction
Many pathways have branches that provide alternate methods for
nutrient processing
What happens when a metabolic pathway has a cyclic form?
The starting molecule is regenerated to initiate another turn of the cycle.
Do not stand alone
interconnected and merge at many sites
How is energy stored?
As ATP
How is energy managed ?
Energy is managed in the form of chemical reactions that involve the making and breaking of bonds and the transfer of electrons
reactions release energy, making it available for cellular work.
Exergonic
What is energonic?
reactions are driven forward with the addition of energy
Exergonic and endergonic reactions are often
often coupled so that released energy is immediately put to work.
Energy released during exergonic reactions is stored in
high-energy phosphate bonds in ATP.
ATP temporarily stores and releases the energy in these chemical bonds to fuel
endergonic reactions
Cells possess specialized enzyme systems that trap the energy present in the bonds of nutrients as they are progressively broken
-Energy released during exergonic reactions is stored in high-energy phosphate bonds in ATP.
-ATP temporarily stores and releases the energy in these chemical bonds to fuel endergonic reactions.
oxidation
: loss of electrons
When a compound loses electrons, it is oxidized
Reduction:
gain of electrons
When a compound gains electrons, it is reduced
