Unit 3 AP BIO Exam Review||Newest
Update With Most Examinable
Questions And Correct
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 →
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.
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
ENE-1.E Explain how enzymes affect the rate of biological reactions.
ESSENTIAL KNOWLEDGE
ENE-1.E.1 The structure and function of enzymes contribute to the regulation of
biological processes—
Enzymes are biological catalysts that facilitate chemical reactions in cells by lowering
the activation energy.
In your own words, what is the 'activation energy' of a reaction? -CORRECT ANSWER
the amount of energy required to make a chemical reaction happen.
Below is an 'enzymatic reaction' - taking one plastic straw and breaking it into two
pieces of straw (AB → A + B). The enzyme doing this reaction is the scissors. -
CORRECT ANSWER The reaction rate speed would lower because without the
enzyme (scissors) it would take a lot of energy to break down the straw in half, therefore
take a long time to break each one- slowing down the reaction rate( number of straw per
second) with the enzyme reaction rate is faster
Label the Biological Catalyst, the Substrate and the Product of this reaction. Label the
'active site' on the enzyme. -CORRECT ANSWER AB ----> A + B
substrate products
Given a box of straws and a pair of scissors you would be able to cut the straws
(produce the p______________ of the reaction) very quickly. -CORRECT ANSWER
product
Predict - What would happen to the reaction rate if you did NOT have the scissors, and
you were breaking the straws by hand? The reaction rate (speed) would
Update With Most Examinable
Questions And Correct
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 →
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.
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
ENE-1.E Explain how enzymes affect the rate of biological reactions.
ESSENTIAL KNOWLEDGE
ENE-1.E.1 The structure and function of enzymes contribute to the regulation of
biological processes—
Enzymes are biological catalysts that facilitate chemical reactions in cells by lowering
the activation energy.
In your own words, what is the 'activation energy' of a reaction? -CORRECT ANSWER
the amount of energy required to make a chemical reaction happen.
Below is an 'enzymatic reaction' - taking one plastic straw and breaking it into two
pieces of straw (AB → A + B). The enzyme doing this reaction is the scissors. -
CORRECT ANSWER The reaction rate speed would lower because without the
enzyme (scissors) it would take a lot of energy to break down the straw in half, therefore
take a long time to break each one- slowing down the reaction rate( number of straw per
second) with the enzyme reaction rate is faster
Label the Biological Catalyst, the Substrate and the Product of this reaction. Label the
'active site' on the enzyme. -CORRECT ANSWER AB ----> A + B
substrate products
Given a box of straws and a pair of scissors you would be able to cut the straws
(produce the p______________ of the reaction) very quickly. -CORRECT ANSWER
product
Predict - What would happen to the reaction rate if you did NOT have the scissors, and
you were breaking the straws by hand? The reaction rate (speed) would
