Unit 3 AP BIO Exam Review Questions
and Answers Graded A+
TOPIC 3.1 Enzyme Structure - Correct answer-ENDURING UNDERSTANDING:
The highly complex organization of living systems requires constant input of
energy and the exchange of macromolecules.
LEARNING OBJECTIVE
ENE-1.D Describe the properties of enzymes.
ESSENTIAL KNOWLEDGE
ENE-1.D.1 The structure of enzymes includes the active site that specifically
interacts with substrate molecules.
ENE-1.D.2 For an enzyme-mediated chemical reaction to occur, the shape and
charge of the substrate must be compatible with the active site of the enzyme.
This is an enzyme →
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,Label the active site.
Draw a substrate molecule that would bind to this enzyme. - Correct answer-
Draw a substrate molecule that would NOT bind to this enzyme. - Correct answer--
any substrate that is not the exact shape of the active site
- needs to fit like a lock and key
What type of biomolecule are enzymes? ________________ What is the
monomer? ______________ - Correct answer-enzyme = proteins
monomer = amino acids
The most important thing about an enzyme its S__________! An enzyme must
have the right S__________ in order to do its job! - Correct answer-- shape
- shape
This enzyme has an amino acid at the center of the active site with a positively
charged R group.
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, Predict - how would the function of this enzyme be affected if a mutation led to a
negatively charged amino acid being in that location? Explain your thoughts.
Predict - how would the function of this enzyme be affected if a mutation led to a
different, but also positively charged amino acid being in that location? Explain
your thoughts. - Correct answer-a negatively charged amino acid (R group) would
likely prevent the enzyme from functioning, The positive charge would probably
disrupt the shape of the enzymes active site, preventing binding of the substrate.
it is possible that the substitution of a different but also positively charged R
groups, would not impact the shape or function of the enzyme. The charge has not
changed, so the protein is likely to fold properly, and interact with the substrate in
the same way
TOPIC 3.2 Enzyme Catalysis - Correct answer-ENDURING UNDERSTANDING:
The highly complex organization of living systems requires constant input of
energy and the exchange of macromolecules.
LEARNING OBJECTIVE
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and Answers Graded A+
TOPIC 3.1 Enzyme Structure - Correct answer-ENDURING UNDERSTANDING:
The highly complex organization of living systems requires constant input of
energy and the exchange of macromolecules.
LEARNING OBJECTIVE
ENE-1.D Describe the properties of enzymes.
ESSENTIAL KNOWLEDGE
ENE-1.D.1 The structure of enzymes includes the active site that specifically
interacts with substrate molecules.
ENE-1.D.2 For an enzyme-mediated chemical reaction to occur, the shape and
charge of the substrate must be compatible with the active site of the enzyme.
This is an enzyme →
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,Label the active site.
Draw a substrate molecule that would bind to this enzyme. - Correct answer-
Draw a substrate molecule that would NOT bind to this enzyme. - Correct answer--
any substrate that is not the exact shape of the active site
- needs to fit like a lock and key
What type of biomolecule are enzymes? ________________ What is the
monomer? ______________ - Correct answer-enzyme = proteins
monomer = amino acids
The most important thing about an enzyme its S__________! An enzyme must
have the right S__________ in order to do its job! - Correct answer-- shape
- shape
This enzyme has an amino acid at the center of the active site with a positively
charged R group.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, Predict - how would the function of this enzyme be affected if a mutation led to a
negatively charged amino acid being in that location? Explain your thoughts.
Predict - how would the function of this enzyme be affected if a mutation led to a
different, but also positively charged amino acid being in that location? Explain
your thoughts. - Correct answer-a negatively charged amino acid (R group) would
likely prevent the enzyme from functioning, The positive charge would probably
disrupt the shape of the enzymes active site, preventing binding of the substrate.
it is possible that the substitution of a different but also positively charged R
groups, would not impact the shape or function of the enzyme. The charge has not
changed, so the protein is likely to fold properly, and interact with the substrate in
the same way
TOPIC 3.2 Enzyme Catalysis - Correct answer-ENDURING UNDERSTANDING:
The highly complex organization of living systems requires constant input of
energy and the exchange of macromolecules.
LEARNING OBJECTIVE
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