Chapter 6 Energy And Metabolism Flashcards
What is oxidation ? (Redox reactions)
Atoms or molecules loses an electron
What is thermodynamics ?
Branch of chemistry concerned with energy changes
What is reduction ? (Redox reactions)
Atoms or molecules gain an electron
, higher level of energy than oxidized form
What is oxidation-reduction reactions ?
It’s a redox, reactions always paired
First law of thermodynamics ?
Energy cannot be created or destroyed
And energy can only change from one form to another
Second law of thermodynamics ?
Entropy(disorder) is continuously increasing
Energy transformations proceed spontaneously to convert matter from a more ordered/less stable form to less ordered/more stable form
Activation energy ?
Extra energy is required to destabilize existing bonds and initiate a chemical reaction
What does a catalyst do ?
Substances that influence chemical bonds in a way that lowers the activation energy( this does not alter the reactant or the product)
What does adenosine triphosphate (ATP) compose of?
This currency of cells composed of ribose 5 carbon sugars, adenine , 3 chains of phosphate
What is an enzyme ?
A biological catalysts
Pockets or clefts for substrate binding ?
Active site
When a substrate and binds with active is the enzyme, what is that called?
Enzyme-substrate complex
There are non-protein enzymes ? Which two kinds are these?
Intramolecular catalysis and intermolecular catalysis
Intramolecular ?
Catalyze reaction on RNA molecule itself
Intermolecular ?
RNA acts on another molecule
