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Flashcards in 6. Metabolism Deck (11):
1

Catabolism

Chemical reactions that break down molecules into smaller units and produces ATP
Exergonic
products have lower potential energy
Increase of entropy

2

Anabolism

Chemical reactions that build molecules from smaller units and require an input of energy
Endergonic
products have higher potential energy

3

ATP

Energy is released when new, more stable bonds are formed
Exergonic

4

1st Law of Thermodynamics

Energy is conserved; it is neither created nor destroyed

5

2nd Law of Thermodynamics

Energy transformations always result in an increase in disorder in the universe

6

Gibbs Free Energy (G)

The amount of energy available to do work
-G = spontaneous
+G = not spontaneous

7

Energetic coupling

The Process in which a spontaneous reaction drives a non-spontaneous reaction
- Reactions must occur together

8

Allosteric Enzymes

Enzymes that are regulated by molecules that bind at sites other than their active sites

9

Activators

Increase the activity of enzymes

10

Inhibitors

Decrease the activity of enzymes by 1. binding to the active site or 2. changing the shape of the enzyme

11

Reversible reactions

High concentration of reactant compared to product can make the forward reaction exergonic