Enzymes: Question Preview (ID: 7449)

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What type of molecule is an enzyme?
a) Carbohydrate b) Lipid c) Protein d) Nucleic Acid
What are enzymes made of?
a) monosaccharides b) amino acids c) fatty acids d) nucleotides
What is the function of enzymes in living things?
a) they catalyze chemical reactions b) they store energy for long periods of time c) they store and transmit hereditary information d) they provide structure and support
Enzymes speed up chemical reactions by
a) producing more substrate molecules b) getting consumed in the reaction c) creating heat energy d) lowering the activation energy of the reaction
The molecules on which an enzyme acts is called a(n)
a) product b) substrate c) enzymatic molecule d) substituent
The part of an enzyme to which the substrate attaches is called the
a) active site b) activation energy c) catalytic converter d) bonding platform
The relationship between an enzyme and its substrate is often compared to a
a) hammer and nail b) car and speed bump c) house and front door d) lock and key
Which of the following can affect the activity of an enzyme?
a) concentration (amount) of substrate b) temperature c) pH d) all of the above
What does it mean for an enzyme to denature
a) it leaves the body b) it is no longer organic c) it loses its shape d) it works more effectively
The enzyme pepsin works best at a pH of 2. What most likely will happen if pepsin is placed in a solution with a pH of 8?
a) its activity will decrease b) its activity will increase c) there will be no change in its activity d) none of the above
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