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Enzyme & Buffer Lab
Test Description: Function of enzymes & buffers in different conditions.
Instructions: Answer all questions to get your test result.
1) Which of the following is NOT true about enzymes?
A
Have ability to make or break bonds
B
Made out of amino acids
C
Made out of carbohydrates
D
Have a unique active site
2) How can changes in pH or temperature affect the enzymes?
A
Changes in ph or temp do NOT affect enzyme function
B
Change the shape and function of the enzyme
C
Lower the activation energy
D
Raise the activation energy
3) Enzymes can...
A
All the answers are correct
B
break bonds.
C
speed up reactions.
D
make bonds.
4) Ezymes in the stomach break down...
A
Fats
B
Protein
C
Carbohydrates
D
Acids
5) What is the name of the stage when the reactant is bound to the enzyme?
A
Complex carbohydrate
B
Simple sugars
C
Enzyme-substrate complex
D
Active site
6) How is enzyme function similar to a lock & key?
A
Enzymes are reusable
B
Enzymes have a specific active site.
C
Enzymes are uniquely matched to their substrate
D
All answers are correct
7) The primary function of buffers is to:
A
increase the effectiveness of enzymes
B
prevent dramatic changes in pH in an organisms
C
speed up reactions
D
slow down reactions
8) When adding acid to a buffer, the line on the graph will
A
decrease slowly
B
increase slowly
C
stay the same
D
decrease dramatically
9) Why are buffers important to daily life?
A
All the answers are correct
B
Help organisms maintain a relatively constant pH
C
Help ensure homeostasis
D
Help organisms resist changes in pH
10) A neutralization reaction occurs when:
A
Hydroxide ions & hydrogen ions balance out resulting in a pH of 7
B
Acids produce a salty solution
C
Acids lowers the pH of a solution
D
The aqueous solution boils
*select an answer for all questions
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