ENZYMES
1: Enzymes are ____________________:
A: Carbohydrates
B: Proteins
C: Fats
D: Starch
2: Which of the following statements best describes how enzymes work?
A: Allow new chemical reactions to occur.
B: Are used up during chemical reactions.
C: Alter the direction of chemical reactions.
D: Alter the rate of chemical reactions.
3: Which of the above statements best describes the enzyme?
A: All parts of enzyme molecule take part in reaction
B: Enzymes lower the activation energy of reaction
C: An enzyme can act upon any kind of substrates
D: They are needed in large quantities
4: The cofactors fit into which of the following categories?
A: Take part in reactions
B: Increase activation energy
C: Help enzymes in their activity
D: Are composed of proteins
5: The coenzymes are:_________________
A: Carbohydrates
B: DNA
C: Proteins
D: Vitamins
6: How is the enzyme or reaction impacted by a temperature shift above the ideal temperature?
A: Increase the rate of reaction
B: Not affect the rate of reaction
C: Decrease the rate of reaction
D: Denature the enzyme
7: The ideal pH for the action of the trypsin enzyme is:
A: acidic pH
B: pH does not affect its activity
C: alkaline pH
D: neutral pH
8: Environmental changes have an impact on enzymes, which ultimately has an impact on:
A: Respiration
B: Metabolism
C: Digestion
D: All of them
9: The body’s elevated temperature is risky because:
A: Nerves breakdown
B: Boiling of body water
C: Enzymes stop to work
D: None of them
