WorksheetsUnit 3 AP Biology (Cellular Energetics)
Total questions: 20
Worksheet time: 10mins
Where does the substrate bind on an enzyme?
Active site
Enhancer
Promoter
TATA box
What is a competitive inhibitor?
Binds to the same site as the substrate.
Binds to a different site than the substrate.
Binds to the substrate to inhibit the reaction.
Binds to the product to inhibit the reaction.
Which describes light independent reactions?
Calvin cycle to break bonds to release carbon dioxide
Calvin cycle to synthesize organic compounds
Krebs cycle to break bonds to release carbon dioxide
Krebs cycle to synthesize organic compounds
Any increase in heat will denature an enzyme.
False
True
Which step of photosynthesis takes place in stroma?
Calvin Cycle
Glycolysis
Krebs Cycle
Light Reactions
As the product concentration increases, the reaction rate ____?
Decreases
Increases
Stays the Same
Which provided evidence of oxygen generation in the atmosphere?
Production of ATP without a mitochondria
Production of fire on earth’s surface
Production of iron oxide bands in rock layers
Production of organic compounds
How does an enzyme affect activation energy?
Decrease
Increase
Stays the Same
How can you overcome a competitive inhibitor?
Add more ATP
Add more inhibitor
Add more products
Add more reactants
Enzymes are consumed by the reaction and must be re-added.
True
False
Which macromolecules are enzymes?
Carbohydrate
Lipid
Nucleic Acid
Protein
What enzyme used is for carbon fixation?
ATP Synthase
Decarboxylase
PEP Carboxylase
Rubisco
What happens to an enzyme if the temperature decreases too low?
No effect
Enzyme increases rate
Enzyme decreases rate
Enzyme denatures
This reaction is…
Endergonic
Exergonic
Which of the following describes an endergonic reaction?
Positive ΔG, nonspontaneous
Negative ΔG, nonspontaneous
Positive ΔG, spontaneous
Negative ΔG, spontaneous
Which step of photosynthesis takes place in the thylakoid?
Calvin Cycle
Glycolysis
Krebs Cycle
Light Reactions
Which step of photosynthesis stores solar energy as ATP?
Calvin Cycle
Glycolysis
Krebs Cycle
Light Reactions
This reaction is…
Endergonic
Exergonic
When an enzyme denatures, which structure is not affected?
Primary
Secondary
Tertiary
Quaternary
Which direction are hydrogen ions pumped for the electron transport chain in photosynthesis?
Into the cytosol
Into the intermembrane space
Into the stroma
Into the thylakoid space
