WorksheetsAP Bio Unit 3 Review
Total questions: 50
Worksheet time: 50mins
What kind of macromolecule are enzymes made of?
What helps speed up chemical reactions?
Which of the following is a type of catalyst?
Where does the substrate attach on an enzyme?
Is a substrate a reactant or a product?
True or False: The shape of the active site is not specific to the shape of the substrate.
False; specific
How do enzymes speed up chemical reactions?
What factors affect enzyme function?
Volume
Substrate Concentration
pH
Temperature
As long as there is enough substrate, adding more enzyme to the reaction will ____ the rate of reaction.
As long as there is enough enzyme, adding more substrate to the reaction will ____ the rate of reaction.
decrease
increase
Which of the following graphs displays substrate concentration vs. rate of reaction?
Which of the following graphs displays temperature vs. rate of reaction?
Which of the following graphs displays pH vs. rate of reaction?
What happens to an enzyme when it is not within its optimal range?
No change to the enzyme occurs
The enzyme becomes denatured
Which type of inhibition occurs when the inhibitor and substrate must compete for the active site?
feedback inhibition
Which type of inhibition occurs when the inhibitor attaches to the enzyme at the allosteric site?
feedback inhibition
True or False: When a noncompetitive inhibitor attaches to an enzyme, it changes the shape of the active site.
False; competitive
Where do cofactors/coenzymes usually bind to on the enzyme?
active site
allosteric site
substrate
Cofactors are ____ molecules.
inorganic
What type of inhibition occurs when the product acts as a competitive inhibitor to stop the chemical reaction?
Feedback inhibition
Competitive inhibition
Noncompetitive inhibition
The higher the activation energy, ___.
Reactions that require energy and have a higher free energy level than the reactants (energetically unfavorable)
Endergonic reactions
Exergonic reactions
Reactions that release energy and have a lower free energy level than the reactants (energetically favorable)
Endergonic reactions
Exergonic reactions
Which graph shows an endergonic reaction?
Which graph shows an exergonic reaction?
When a molecule is oxidized, what happens?
It loses hydrogen/electrons
It gains hydrogen/electrons
the liquid that fills the chloroplast & surrounds the thylakoids
grana
thylakoid
stomata
stacks of thylakoids that increase surface area inside a chloroplast
grana
thylakoid
stomata
1 disk in a grana that stores chlorophyll & collects light energy
grana
thylakoid
stomata
pores in a leaf that allow CO2 to enter & O2 to exit
grana
thylakoid
stomata
Which reactant in photosynthesis is reduced?
oxygen (O2)
water (H2O)
glucose (C6H12O6)
carbon dioxide (CO2)
What steps are involved in photosynthesis?
Light-Dependent Reaction
Krebs Cycle
Calvin Cycle
Glycolysis
Light-Dependent Reaction
Location: thylakoid
Inputs: H2O, light
Outputs: O2, NADPH, ATP
Location: thylakoid
Inputs: O2, NADPH, ATP
Outputs: H2O, light
Location: stroma
Inputs: NADPH, ATP, CO2
Outputs: glucose
Location: stroma
Inputs: glucose
Outputs: NADPH, ATP, CO2
Calvin Cycle
Location: thylakoid
Inputs: H2O, light
Outputs: O2, NADPH, ATP
Location: thylakoid
Inputs: O2, NADPH, ATP
Outputs: H2O, light
Location: stroma
Inputs: NADPH, ATP, CO2
Outputs: glucose
Location: stroma
Inputs: glucose
Outputs: NADPH, ATP, CO2
True or False: C4 plants only open their stomata to take in CO2 at night to preserve water.
True
False; CAM Plants
Select the correct pairing.
Catabolic Pathway: large molecules are broken down & energy is released (exergonic)
Anabolic Pathway: large molecules are created & energy is required (endergonic)
Catabolic Pathway: large molecules are created & energy is required (endergonic)
Anabolic Pathway: large molecules are broken down & energy is released (exergonic)
Aerobic vs. Anaerobic
Aerobic: without O2
Anaerobic: with O2
Aerobic: with O2
Anaerobic: without O2
Glycolysis
Location: cytosol
Inputs: glucose, 2 NAD+, 2 ATP
Outputs: 2 pyruvate, 2 NADH, 4 ATP
Location: mitochondria
Inputs: 2 pyruvate, 2 NAD+
Outputs: 2 Acetyl CoA, 2 CO2, 2 NADH
Location: mitochondrial matrix
Inputs: 2 Acetyl CoA, 6 NAD+, 2 FAD+, 2 ADP + Pi
Outputs: 4 CO2, 6 NADH, 1 FADH2, 2 ATP
Location: inner membrane of the mitochondria
Inputs: O2, NADH, FADH2
Outputs: 2 H2O, ~34 ATP
Oxidation of Pyruvate
Location: cytosol
Inputs: glucose, 2 NAD+, 2 ATP
Outputs: 2 pyruvate, 2 NADH, 4 ATP
Location: mitochondria
Inputs: 2 pyruvate, 2 NAD+
Outputs: 2 Acetyl CoA, 2 CO2, 2 NADH
Location: mitochondrial matrix
Inputs: 2 Acetyl CoA, 6 NAD+, 2 FAD+, 2 ADP + Pi
Outputs: 4 CO2, 6 NADH, 1 FADH2, 2 ATP
Location: inner membrane of the mitochondria
Inputs: O2, NADH, FADH2
Outputs: 2 H2O, ~34 ATP
Krebs Cycle
Location: cytosol
Inputs: glucose, 2 NAD+, 2 ATP
Outputs: 2 pyruvate, 2 NADH, 4 ATP
Location: mitochondria
Inputs: 2 pyruvate, 2 NAD+
Outputs: 2 Acetyl CoA, 2 CO2, 2 NADH
Location: mitochondrial matrix
Inputs: 2 Acetyl CoA, 6 NAD+, 2 FAD+, 2 ADP + Pi
Outputs: 4 CO2, 6 NADH, 1 FADH2, 2 ATP
Location: inner membrane of the mitochondria
Inputs: O2, NADH, FADH2
Outputs: 2 H2O, ~34 ATP
Oxidative Phosphorylation
Location: cytosol
Inputs: glucose, 2 NAD+, 2 ATP
Outputs: 2 pyruvate, 2 NADH, 4 ATP
Location: mitochondria
Inputs: 2 pyruvate, 2 NAD+
Outputs: 2 Acetyl CoA, 2 CO2, 2 NADH
Location: mitochondrial matrix
Inputs: 2 Acetyl CoA, 6 NAD+, 2 FAD+, 2 ADP + Pi
Outputs: 4 CO2, 6 NADH, 1 FADH2, 2 ATP
Location: inner membrane of the mitochondria
Inputs: O2, NADH, FADH2
Outputs: 2 H2O, ~34 ATP
Overall gain of ATP in glycolysis
34
2
1
4
Per glucose molecule, how many times can you go through glycolysis?
4
2
1
3
Per glucose molecule, how many times can you go through oxidation of pyruvate?
4
2
1
3
Per glucose molecule, how many times can you go through the krebs cycle?
4
2
1
3
What is the production of ATP using a proton gradient called?
susbtrate-level phosphorylation
chemiosmosis
oxidative phosphorylation
ATP Synthase
What is the the direct addition of a phosphate group to ADP without using an electron transport chain/chemiosmosis called?
susbtrate-level phosphorylation
chemiosmosis
oxidative phosphorylation
ATP Synthase
What is the final electron acceptor in the electron transport chain?
glucose (C6H12O6)
carbon dioxide (CO2)
oxygen (O2)
water (H2O)
Alcohol fermentation produces ___.
carbon dioxide (CO2)
NAD+
lactic acid
an alcohol (ethanol)
Lactic acid fermentation produces ___.
carbon dioxide (CO2)
NAD+
lactic acid
an alcohol (ethanol)
