What role do enzymes play in chemical reactions?
Enzymes

Passage
•
Biology
•
10th Grade
•
Medium
Ferdinand Estrella
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They speed up the rates of reaction
They permanently change during the reaction
They reduce the amount of products formed
They increase the activation energy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are enzymes known as biological catalysts?
Because they can only catalyze biological reactions
Because they are consumed in the reaction
Because they lower the activation energy of the reaction
Because they are only found in living organisms
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do enzymes and substrates interact?
By changing the shape of the substrate
By increasing the temperature of the substrate
By permanently binding to each other
By moving randomly until they collide at the right speed and orientation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the 'lock and key' mechanism?
A method to lock the enzyme's active site
A theory that explains how enzymes are destroyed
A mechanism where the enzyme and substrate fit together perfectly
A process to synthesize enzymes artificially
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to enzymes after the reaction?
They are destroyed
They become part of the product
They are unchanged and can be reused
They convert into substrates
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of temperature on enzyme activity?
Temperature has no effect on enzyme activity
Decreasing temperature always increases enzyme activity
Enzymes are most active at freezing temperatures
Increasing temperature increases activity to a point, then decreases due to denaturation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of catalase enzymes?
To synthesize hydrogen peroxide
To break down hydrogen peroxide into water and oxygen
To transport hydrogen peroxide out of the cell
To increase the concentration of hydrogen peroxide
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