BIOCHEMISTRY EXAM 2 WITH
100% CORRECT ANSWERS 2026
carbon dioxide gas correct answer Why do sodas fizz more
when you drink them?
Soda is fizzy because the gas _________________
__________________________ is dissolved into the sweet, syrupy
liquid.
_________________ __________________________ molecules have a
natural tendency to leave any liquid, popping through the surface
and escaping forever as a __________.
proton correct answer How does acid/base catalysis help with
speeding up a reaction?
General acid-base catalysis involves a molecule besides water
that acts as a ________________ donor or acceptor during the
enzymatic reaction.
stabilizing correct answer How does acid/base catalysis help
with speeding up a reaction?
Acid-base catalysis facilitates a reaction by
____________________________ the charges in the transition state
,through the use of an acid or base, which donates protons or
accepts them, respectively.
activated correct answer How does acid/base catalysis help
with speeding up a reaction?
Nucleophilic and electrophilic groups are _________________________
as a result of the proton addition or removal and causes the
reaction to proceed.
nucleophilic correct answer Covalent catalysis assists with
what type of reactions?
In this reaction the enzyme contains a reactive group, usually a
_________________________ residue which reacts with the substrate
through a _________________________ attack.
substrate correct answer How does proximity/orientation
catalysis speed up reactions?
The proximity effect describes the orientation and movement of
the _______________________ molecules when binding to enzyme
active sites.
orbital correct answer How does proximity/orientation catalysis
speed up reactions?
,The________________ steering hypothesis states that just because a
substrate and an enzyme active site are in close proximity does
not mean that a catalysis reaction will occur.
occur correct answer How does proximity/orientation catalysis
speed up reactions?
This is because the enzyme must guide or "steer" the substrate
into the active site in a specific orientation in order for the
reaction to actually ____________.
efficient correct answer How does proximity/orientation
catalysis speed up reactions?
Over time, the "steering" has evolved and become more
_____________________.
activation energy correct answer What is the name of the
energy barrier that is required to cross to move from reactants to
products?
______________________ ________________
transition correct answer In the induced fit model when does
the substrate bind most strongly to the enzyme?
at the _____________________ state
, effector correct answer Allosteric regulators bind where and
what do they do?
Bind at an ______________________ molecule at a site other than the
enzyme's active site
The site to which the ______________________ binds is termed the
allosteric site or regulatory site.
bind, conformational correct answer Allosteric regulators bind
where and what do they do?
Allosteric sites allow effectors to ___________ to the protein, often
resulting in a _______________________ change involving protein
dynamics.
activators, inhibitors correct answer Allosteric regulators bind
where and what do they do?
Effectors that enhance the protein's activity are referred to as
allosteric ____________________, whereas those that decrease the
protein's activity are called allosteric ____________________.
low correct answer How is dialysis used in protein purification?
To remove ___________ molecular weight compounds such as salts.
100% CORRECT ANSWERS 2026
carbon dioxide gas correct answer Why do sodas fizz more
when you drink them?
Soda is fizzy because the gas _________________
__________________________ is dissolved into the sweet, syrupy
liquid.
_________________ __________________________ molecules have a
natural tendency to leave any liquid, popping through the surface
and escaping forever as a __________.
proton correct answer How does acid/base catalysis help with
speeding up a reaction?
General acid-base catalysis involves a molecule besides water
that acts as a ________________ donor or acceptor during the
enzymatic reaction.
stabilizing correct answer How does acid/base catalysis help
with speeding up a reaction?
Acid-base catalysis facilitates a reaction by
____________________________ the charges in the transition state
,through the use of an acid or base, which donates protons or
accepts them, respectively.
activated correct answer How does acid/base catalysis help
with speeding up a reaction?
Nucleophilic and electrophilic groups are _________________________
as a result of the proton addition or removal and causes the
reaction to proceed.
nucleophilic correct answer Covalent catalysis assists with
what type of reactions?
In this reaction the enzyme contains a reactive group, usually a
_________________________ residue which reacts with the substrate
through a _________________________ attack.
substrate correct answer How does proximity/orientation
catalysis speed up reactions?
The proximity effect describes the orientation and movement of
the _______________________ molecules when binding to enzyme
active sites.
orbital correct answer How does proximity/orientation catalysis
speed up reactions?
,The________________ steering hypothesis states that just because a
substrate and an enzyme active site are in close proximity does
not mean that a catalysis reaction will occur.
occur correct answer How does proximity/orientation catalysis
speed up reactions?
This is because the enzyme must guide or "steer" the substrate
into the active site in a specific orientation in order for the
reaction to actually ____________.
efficient correct answer How does proximity/orientation
catalysis speed up reactions?
Over time, the "steering" has evolved and become more
_____________________.
activation energy correct answer What is the name of the
energy barrier that is required to cross to move from reactants to
products?
______________________ ________________
transition correct answer In the induced fit model when does
the substrate bind most strongly to the enzyme?
at the _____________________ state
, effector correct answer Allosteric regulators bind where and
what do they do?
Bind at an ______________________ molecule at a site other than the
enzyme's active site
The site to which the ______________________ binds is termed the
allosteric site or regulatory site.
bind, conformational correct answer Allosteric regulators bind
where and what do they do?
Allosteric sites allow effectors to ___________ to the protein, often
resulting in a _______________________ change involving protein
dynamics.
activators, inhibitors correct answer Allosteric regulators bind
where and what do they do?
Effectors that enhance the protein's activity are referred to as
allosteric ____________________, whereas those that decrease the
protein's activity are called allosteric ____________________.
low correct answer How is dialysis used in protein purification?
To remove ___________ molecular weight compounds such as salts.
