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Chp. 6 Bio

intro to energy, enzymes and metabolism

QuestionAnswer
Kinetic Energy energy of motion is doing work. moving matter.
Potential Energy is stored energy that can be used later.
electrons have potentials energy that can be used in chemical reactions
Chemical energy potential energy that is stored in a molecule.
Thermodynamics is the study of energy transformation within a system.
Endergonic reactions require energy. energy is absorbed by the reactants and stored in chemical bonds of products. photosynthesis.
Photosynthesis is a series of endergonic reactions.
Exergonic reactions release energy. the reactants have energy stored in chemical bonds, when those bonds are broken, energy is released. cellular respiration.
Cellular respiration exergonic reactions. glucose broken down into ATP, perform work.
ATP structure Nitrogenous base - adenine sugar - ribose 3 phosphate groups
cells metabolism sum of all the chems reactions endergonic and exergonic in cell.
phosphorylation is the addition of a phosphate group to a protein.
Enzymes are necessary to speed up chemical reactions.
Enzymes is a protein catalyst that lowers energy of activation for a reaction to take place.
enzymes do not add energy to the reaction/ get used up during the reaction. they remain uncharged.
every enzymes has only one substrate one molecule or type of molecule that it can recognize and bind to.
the region on the enzyme that the substrate binds to is called the active site.
Electron transport molecule (NAD+) picks up hydrogen atoms from one molecule and give them to another.
NAD+ is the oxidized form, low in energy, without any additional energy from electrons
NADH is reduced, high in energy, with two electrons that it can donate to other molecules.
Created by: 1574238891
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