QQuestionBiochemistry
QuestionBiochemistry
which of the following statements about enzymes are true? Choose all that apply
a.) an enzyme yields a specific product, whereas a nonbiologival catalyst may produce more than one product, and side reactions may occur.
b.) generally, an enzyme is specific for a substrate. for example, thrombin catalyzes the hydrolysis of the peptide bond between Arg and Gly.
c.) a substrate must bind to the active site before a reaction occurs.
d.) reactions occur at the active site, which usually consists of a crevice on the surface of the enzyme
e.) nonbiological catalysts and enzymes tend to have a similar degree of reaction specificity.
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Answer
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Step 1
The specificity of enzymes is one of their key characteristics. An enzyme yields a specific product, whereas a non-biological catalyst may produce more than one product, and side reactions may occur. (TRUE)
Step 2
Enzymes are generally specific for a substrate. For example, thrombin catalyzes the hydrolysis of the peptide bond between Arg and Gly. This specificity allows enzymes to carry out specific reactions in the cell without interference from other molecules. (TRUE)
Final Answer
a) TRUE b) TRUE c) TRUE d) TRUE e) FALSE
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