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Catabolism Anabolism Metabolism
14

Metabolism Catabolism Anabolism.

Jan 18, 2018

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Pierce Green

First Law of Thermodynamics Eating Where does the energy come from? Where does it go?
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Page 1: Metabolism Catabolism Anabolism.

Catabolism Anabolism

Metabolism

Page 2: Metabolism Catabolism Anabolism.

First Law of ThermodynamicsEating

Where does the energy come from?

Where does it go?

Page 3: Metabolism Catabolism Anabolism.

First Law of Thermodynamics

Walking up a hillWhere does the

energy come from?Where does it go?

Sledding down a hillWhere does the

energy come from?Where does it go?

Page 4: Metabolism Catabolism Anabolism.

Has energy been created or destroyed?

Page 5: Metabolism Catabolism Anabolism.

First law of thermodynamicsEnergy cannot be created or destroyed

Page 6: Metabolism Catabolism Anabolism.

Second law of thermodynamicsEnergy transfer is not completely efficient,

therefore…Every energy transfer or transformation

increases the entropy of the universeEntropy – Disorder or randomness

Page 7: Metabolism Catabolism Anabolism.

Second law of thermodynamicsNeed energy to

decrease entropyEx. Cleaning your

roomDo not need

energy to increase entropy (Spontaneously)Ex. Your room gets

messy without work

Page 8: Metabolism Catabolism Anabolism.

Energy and reactionsEnergy – the

capacity to do workWork = force x

distance moved

Page 9: Metabolism Catabolism Anabolism.

Energy and reactionsWhat is the unit on

the y axis? Energy (Gibbs free

energy)Which graph

represents more capacity to do work?

Page 10: Metabolism Catabolism Anabolism.

Energy and Reactions

Page 11: Metabolism Catabolism Anabolism.

Exergonic and Endergonic reactions

Page 12: Metabolism Catabolism Anabolism.

Why is this important?The cells use exergonic processes to drive

endergonic processes.This is called energy coupling

Page 13: Metabolism Catabolism Anabolism.

Think of a real life example of a primary action

that stores potential energy for a secondary action. (ex: pumping water into a holding tank then allowing it to flow through a turbine when electricity is needed)

Page 14: Metabolism Catabolism Anabolism.

ATP!!!!ATP couples

reactions within the cell

What do you think regenerates ATP?

Catabolism!!!! (cellular respiration)