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Ch. 3 Recap- Med Biochem
Quiz by Kari Stone
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- Q1
Some enzymes have a binding site which is not recognized by the normal substrate, and affects the activity of the enzyme if it is occupied by a ligand. What term is used for such a binding site?
Allosteric binding site
Secondary binding site
Active site
Inhibitory binding site
30s - Q2
Which of the following amino acids commonly acts as a nucleophilic group in enzyme-catalysed reaction mechanisms?
Phenylalanine
Histidine
Serine
Valine
30s - Q3
Which of the following amino acids acts as an acid-base catalyst in enzyme-catalysed reaction mechanisms?
Serine
Histidine
Tryptophan
Phenylalanine
30s - Q4
Which of the following statements is true with respect to the Michaelis constant?
It is equal to the concentration of inhibitor at which the reaction rate is half of its maximum value.
It is equal to the concentration of substrate at which the reaction rate is at its maximum value.
It is equal to the concentration of substrate at which the reaction rate is half of its maximum value.
It is equal to the concentration of inhibitor at which the reaction rate is zero.
30s - Q5
Which of the following statements is not true regarding the active site of an enzyme?�
An active site contains amino acids which are important to the binding process and the catalytic mechanism.
Substrates fit into active sites and bind to functional groups within the active site.
An active site is normally hydrophobic in nature.
An active site is normally on the surface of an enzyme.
30s - Q6
Consider the following enzyme-catalysed reaction carried out on glycogen. What is the product?
Glucose-1-phosphate
Glucose
AMP
Glycogen
30s