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MCAT BIOCHEMISTRY Questions with Answers (100%
Correct Answers)
a-Helix Answer: An element of Secondary structure.
Marked by clockwise coiling of Amino Acids around a central axis.
Acetyl-CoA Answer: An important metabolic intermediate that links
glycolysis and B-oxidation to the citric acid cycle.
can also be converted into ketone bodies.
Activation Answer: Conversion of a biomolecule to its active or usable
form, such as activating tRNA with an Amino Acid or activating a
fatty acid with CoA to form fatty acyl-CoA
Active Site Answer: The Catalytically active portion of an enzyme.
Active Transport Answer: The movement of a molecule against its
concentration gradient with energy investment.
primary active transport uses ATP, whereas secondary active transport
uses a favorable transport gradient of a different molecule.
Activity Answer: Also sometimes called velocity or rate.
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this is a measure of the catalytic activity of an enzyme.
it is often measured as a Vmax and may be analyzed after protein
isolation.
Adenosine Triphosphate (ATP) Answer: The Primary energy molecule
of the body.
it releases energy by breaking the bond with terminal phosphate to
form ADP and an inorganic phosphate.
Aerobic Respiration Answer: Energy-producing metabolic processes
that require oxygen.
including
the citric acid, electron transport chain. and oxidative phosphorylation.
Allosteric Enzymes Answer: Enzymes that experience changes in their
conformation as a result of interactions at site other than the active site
called allosteric sites.
conformation changes may increase or decrease enzyme activity.
Alternative Splicing Answer: The production of Multiple different but
related mRNA molecules from a single primary transcript of hnRNA.
© 2025 All rights reserved
MCAT BIOCHEMISTRY Questions with Answers (100%
Correct Answers)
a-Helix Answer: An element of Secondary structure.
Marked by clockwise coiling of Amino Acids around a central axis.
Acetyl-CoA Answer: An important metabolic intermediate that links
glycolysis and B-oxidation to the citric acid cycle.
can also be converted into ketone bodies.
Activation Answer: Conversion of a biomolecule to its active or usable
form, such as activating tRNA with an Amino Acid or activating a
fatty acid with CoA to form fatty acyl-CoA
Active Site Answer: The Catalytically active portion of an enzyme.
Active Transport Answer: The movement of a molecule against its
concentration gradient with energy investment.
primary active transport uses ATP, whereas secondary active transport
uses a favorable transport gradient of a different molecule.
Activity Answer: Also sometimes called velocity or rate.
© 2025 All rights reserved
, 2
this is a measure of the catalytic activity of an enzyme.
it is often measured as a Vmax and may be analyzed after protein
isolation.
Adenosine Triphosphate (ATP) Answer: The Primary energy molecule
of the body.
it releases energy by breaking the bond with terminal phosphate to
form ADP and an inorganic phosphate.
Aerobic Respiration Answer: Energy-producing metabolic processes
that require oxygen.
including
the citric acid, electron transport chain. and oxidative phosphorylation.
Allosteric Enzymes Answer: Enzymes that experience changes in their
conformation as a result of interactions at site other than the active site
called allosteric sites.
conformation changes may increase or decrease enzyme activity.
Alternative Splicing Answer: The production of Multiple different but
related mRNA molecules from a single primary transcript of hnRNA.
© 2025 All rights reserved
