Lecture 15 Flashcards
what is the job of the anabolic pathway?
Use energy to build complex molecules.
What are the two types of metabolic pathways?
Catabolic and anabolic pathways
what is the job of the catabolic pathway?
Break down molecules and release energy.
What is the difference between catabolism and anabolism?
Catabolism: Energy-releasing
Anabolism: Energy-consuming
How is free energy used in metabolism?
Metabolism releases free energy that can be used to generate ATP, which is then used in anabolic reactions.
What are the types of metabolic pathways?
Linear
Cyclic
Branched
What does Gibbs Free Energy (ΔG) tell you about a reaction in terms of its sign?
ΔG < 0: Reaction is spontaneous.
ΔG > 0: Reaction is non-spontaneous.
How is Gibbs Free Energy (ΔG) affected by substrate and product concentrations?
ΔG depends on the concentrations of products and substrates.
what does ΔGº′ represent?
ΔGº′ is the standard free energy change.
how much energy does ATP hydrolysis release?
-31 kJ/mol of energy.
What is the idea behind ATP’s phosphoryl transfer potential?
ATP can transfer a phosphate group to activate other molecules.
What are the components of ATP?
ATP is made of adenine, ribose, and three phosphate groups.
what aspect of the phosphoanhydride molecule holds energy?
The phosphoanhydride bonds between phosphates store energy.
How can unfavorable reactions be made favorable?
Unfavourable reactions can be driven forward when coupled with favourable reactions.
How does ATP hydrolysis relate to muscle contraction?
ATP hydrolysis drives muscle contraction.
Energy from ATP is converted into mechanical movement.
