AP Biology Unit 3 Exam Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Energy - CORRECT ANSWER - the capacity to do work
Enzymes - CORRECT ANSWER - proteins that act as biological catalysts
potential energy - CORRECT ANSWER - stored energy that results from the position or
shape of an object
chemical energy - CORRECT ANSWER - A form of potential energy that is stored in
chemical bonds between atoms.
kinetic energy - CORRECT ANSWER - the energy an object has due to its motion
thermal energy - CORRECT ANSWER - The total energy of motion in the particles of a
substance
heat - CORRECT ANSWER - thermal energy in transfer from one body of matter to another
light - CORRECT ANSWER - a form of energy that travels in waves and can move through
empty space where there is no air
first law of thermodynamics - CORRECT ANSWER - Energy can be transferred and
transformed, but it cannot be created or destroyed.
, second law of thermodynamics - CORRECT ANSWER - when energy is changed from one
form to another, some useful energy is always degraded into lower quality energy (usually heat)
entropy
Law of Conservation of Energy - CORRECT ANSWER - the law that states that energy
cannot be created or destroyed but can be changed from one form to another
Gibbs free energy - CORRECT ANSWER - the energy of a system that is available to do
work at a constant temperature and pressure
Exergonic - CORRECT ANSWER - Chemical reactions that release energy
Endergonic - CORRECT ANSWER - A chemical reaction that requires the input of energy in
order to proceed.
Metabolism - CORRECT ANSWER - the combination of chemical reactions through which
an organism builds up or breaks down materials
Catabolism - CORRECT ANSWER - Metabolic pathways that break down molecules,
releasing energy.
Anabolism - CORRECT ANSWER - Metabolic pathways that construct molecules, requiring
energy.
Catalytic proteins (enzymes) - CORRECT ANSWER - speed up chemical reactions without
being consumed themselves. work by decreasing the activation energy required.
energy of activation - CORRECT ANSWER - The amount of energy that reactants must
absorb before a chemical reaction will start
ACTUAL Exam Questions and CORRECT
Answers
Energy - CORRECT ANSWER - the capacity to do work
Enzymes - CORRECT ANSWER - proteins that act as biological catalysts
potential energy - CORRECT ANSWER - stored energy that results from the position or
shape of an object
chemical energy - CORRECT ANSWER - A form of potential energy that is stored in
chemical bonds between atoms.
kinetic energy - CORRECT ANSWER - the energy an object has due to its motion
thermal energy - CORRECT ANSWER - The total energy of motion in the particles of a
substance
heat - CORRECT ANSWER - thermal energy in transfer from one body of matter to another
light - CORRECT ANSWER - a form of energy that travels in waves and can move through
empty space where there is no air
first law of thermodynamics - CORRECT ANSWER - Energy can be transferred and
transformed, but it cannot be created or destroyed.
, second law of thermodynamics - CORRECT ANSWER - when energy is changed from one
form to another, some useful energy is always degraded into lower quality energy (usually heat)
entropy
Law of Conservation of Energy - CORRECT ANSWER - the law that states that energy
cannot be created or destroyed but can be changed from one form to another
Gibbs free energy - CORRECT ANSWER - the energy of a system that is available to do
work at a constant temperature and pressure
Exergonic - CORRECT ANSWER - Chemical reactions that release energy
Endergonic - CORRECT ANSWER - A chemical reaction that requires the input of energy in
order to proceed.
Metabolism - CORRECT ANSWER - the combination of chemical reactions through which
an organism builds up or breaks down materials
Catabolism - CORRECT ANSWER - Metabolic pathways that break down molecules,
releasing energy.
Anabolism - CORRECT ANSWER - Metabolic pathways that construct molecules, requiring
energy.
Catalytic proteins (enzymes) - CORRECT ANSWER - speed up chemical reactions without
being consumed themselves. work by decreasing the activation energy required.
energy of activation - CORRECT ANSWER - The amount of energy that reactants must
absorb before a chemical reaction will start
