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Chapters 6-?
Dr Doyle - Bio I
30
Biology
Undergraduate 1
09/25/2006

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Term
What is energy measured in?
Definition
kilocalories and kilojoules
Term
What is potential energy?
Definition
the capacity to do work because of position or state, includes chemical energy
Term
What is chemical energy?
Definition
it is potential energy stored in chemical bonds
Term
What is kinetic energy?
Definition
the energy of motion
Term
What is energy?
Definition
the capacity to do work, which is any change in state or motion of matter
Term
What is the First Law of Thermodynamics?
Definition
energy cannot be created or destroyed, energy can be transferred and changed in form
Term
What is entropy?
Definition
the measurement of the random, disordered energy that is unavaliable to do work
Term
What is metabolism?
Definition
the sum of all the chemical activities taking place in an organism, includes anabolism and metabolism
Term
What is anabolism?
Definition
complex molecules synthesized from simpler substances (amino acids form proteins)
Term
What is catabolism?
Definition
larger molecules are broken into smaller ones (proteins break down into amino acids)
Term
What is the Second Law of Thermodynamics?
Definition
entropy is continuously increasing, no energy transfer is 100% efficient, some energy is dissipated as heat
Term
What is free energy?
Definition
the amount of energy avaliable to do work
Term
As entropy _______, the amount of free energy ______.
Definition
increases, decreases
Term
What is H?
Definition
enthalpy
Term
What is G?
Definition
free energy
Term
What is enthalpy?
Definition
it is the total potential energy of a system
Term
What is T?
Definition
absolute temperature in degrees kelvin
Term
What is an exergonic reaction?
Definition
releases energy that can perform work, in coupled reaction it supplies input of free energy to drive an endergonic reaction
Term
Endergonic reaction increases ________.
Definition
free energy
Term
What is S?
Definition
entropy
Term
What does ATP do with energy?
Definition
holds readily available energy for very short periods
Term
ATP is the common link between what?
Definition
exergonic and endergonic reactions as well as anabolism and catabolism
Term
What happens to an oxidized substance?
Definition
the substance that becomes oxidized gives up energy, usually in the form of an electron
Term
What happens to a reduced substance?
Definition
the substance that becomes reduced receives energy, usually in the form of an electron
Term
Redox reactions are an important part of what?
Definition
cellular respiration, photosynthesis, and other chemical reactions
Term
ATP donates energy how?
Definition
by means of terminal phosphate group
Term
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