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19 questions
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- 1. Multiple Choice
What is a protein catalyst that permits chemical reactions in the body?
Enzyme
Substrate
Active site
Cofactor
- 2. Multiple Choice
What is a molecule on which an enzyme works?
Enzyme
Substrate
Active site
Cofactor
- 3. Multiple Choice
What is the area of an enzyme that combines with the substrate?
Enzyme
Substrate
Active site
Cofactor
- 4. Multiple Choice
What is an organic molecule that helps an enzyme combine with a substrate molecule?
Catalyst
Coenzyme
Active site
Cofactor
- 5. Multiple Choice
What is an inorganic molecule that helps an enzyme combine with a substrate molecule?
Catalyst
Coenzyme
Active site
Cofactor
- 6. Multiple Choice
Which of the letters represents the enzyme?
a
b
c
d
- 7. Multiple Choice
Which of the letters represents the active site?
a
b
c
d
- 8. Multiple Choice
Which of the letters represents the substrate?
a
b
c
d
- 9. Multiple Choice
Which of the letters represents the substrate products?
a
b
c
d
- 10. Multiple Choice
Which of the following DO NOT affect reaction rates of enzymes?
pH
Substrate molecule concentration
Temperature
Pressure
- 11. Multiple Choice
A molecule that competes with a substrate for access to an active site is called...
Feedback inhibition
Competitive inhibitor
Alosteric activity
Cofactor
- 12. Multiple Choice
If too much of a substrate is made, what process happens?
Feedback inhibition
Precursor activity
Allosteric site
Competitive inhibitorr
- 13. Multiple Choice
Why are enzymes important in metabolic reactions?
They increase the rate of reaction
They bring molecules together to react
They allow reactions to occur at lower temperatures
All of these answers
- 14. Open Ended
How do enzymes increase the rate of reaction?
- 15. Open Ended
What four factors increase rate of reaction of enzymes?
- 16. Multiple Choice
Which of the following statements are true?
The lock and key model newer than the induced-fit model
The induced-fit model requires coenzymes or cofactors
The lock and key model requires coenzymes or cofactors
All statements are true.
- 17. Multiple Choice
When will feedback inhibition occur?
When there is too much final product
When there is too much initial reactant
When there are too many enzymes
When there is too little allosteric molecules
- 18. Multiple Choice
How will introducing an enzyme into a system affect this diagram?
The curve will go higher
The energy required to activate will increase
The curve will lower
The curve will flatten
- 19. Open Ended
Based off of what you learned about enzymes, why are high fevers dangerous?
- Answer choicesTagsAnswer choicesTags