BIOL 1P91 Final Exam (Brock
University) All Questions and Verified
Answers 2023/2024 Latest Version
Metabolism Correct Answer All of the chemical reactions that occur within an
organism
Chemical Reaction Correct Answer The process by which one or more
substances change to produce one or more ...
BIOL 1P91 Final Exam (Brock
University) All Questions and Verified
Answers 2023/2024 Latest Version
Metabolism Correct Answer All of the chemical reactions that occur within an
organism
Chemical Reaction Correct Answer The process by which one or more
substances change to produce one or more different substances
Purpose of Food Correct Answer 1. Provide organic materials needed to maintain
cells and support growth of new cells and tissues
2. Provides a source of energy to promote chemical reactions that cannot occur
without an input of energy
Energy Correct Answer The ability to do work
Kinetic Energy Correct Answer Energy of motion
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.
Thermodynamics Correct Answer The study of energy transformations that occur
in a collection of matter.
First Law of Thermodynamics Correct Answer Energy can be transferred and
transformed, but it cannot be created or destroyed.
Law of Conservation of Energy Correct Answer Energy can be transformed from
one form into another or transferred from one region to another, but energy cannot
be created or destroyed
Second Law of Thermodynamics Correct Answer Every energy transfer or
transformation increases the entropy of the universe.
Entropy Correct Answer Degree of disorder; to make something happen, degree
of disorder in universe must increase
Usable Energy Correct Answer Can be used to do work; the less unusable
energy, the faster things can be done
Free Energy Correct Answer Energy that is available to do work
, Spontaneous Reactions Correct Answer Occur without input of additional energy;
not necessarily fast; key factor is the free energy change
Exergonic Reaction Correct Answer A chemical reaction that releases energy
Endergonic Reaction Correct Answer A chemical reaction that doesn't release
energy
Chemical Equilibrium Correct Answer A state of balance in which the rate of a
forward reaction equals the rate of the reverse reaction and the concentrations of
products and reactants remain unchanged
Catalyst Correct Answer Substance that speeds up the rate of a chemical reaction
Enzymes Correct Answer Proteins that act as biological catalysts
Activation Energy Correct Answer Initial input of energy to start a reaction
Transition state Correct Answer States were original bonds have stretched to their
limit and chemical reaction can readily proceed to the formation of products
Active Site Correct Answer The part of an enzyme or antibody where the chemical
reaction occurs.
Substrate Correct Answer Reactant of an enzyme-catalyzed reaction
Substrate Binding Correct Answer Enzymes have a high affinity or high degree of
specificity for a substrate
Induced Fit Model Correct Answer Change in the shape of an enzyme's active site
that enhances the fit between the active site and its substrate(s)
Cofactors Correct Answer Any nonprotein molecule or ion that is required for the
proper functioning of an enzyme
Metal Ions Correct Answer Help organize enzyme structure or assist catalyst
Coenzymes Correct Answer Associate transiently and usually help w/group
transfers or electron transfers
Prosthetic Group Correct Answer A non-protein, but organic, molecule (such as
vitamin) that is covalently bound to an enzyme as part of the active site.
Catabolic Reactions Correct Answer Breakdown of molecules
Anabolic Reactions Correct Answer Synthesis of larger molecules from smaller
ones
Redox Reactions Correct Answer When there is a transfer of one or more
electrons from one reactant to another
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