16 Questions
What is the term for catalysis that occurs in solution?
Homogeneous catalysis
What are biological catalysts called?
Enzymes
What does enzyme specificity define?
The capacity to recognize and bind only one or a few molecules
What are enzymes called due to the asymmetry of their active sites?
Stereoselective
How is enzymatic activity subject to control?
Binding of small molecules that produce conformational changes in the enzyme structure
What is the term for catalysis on an insoluble surface?
Heterogeneous catalysis
What is the complementary arrangement between the active site and substrate molecule referred to as?
Lock-and-key fit
What term is used to describe the capacity of a substrate to reshape the active site to bind tightly with high affinity?
Induced fit
What is the energy absorbed by reactant molecules before they have a chance to convert to products called?
Free energy of activation
What type of enzyme naming includes a designation of the type of reaction catalyzed?
Systematic naming
Enzymes that catalyze the same reaction but have different forms due to differences in amino acid sequences are referred to as:
Isoenzymes
What are low molecular weight organic molecules and inorganic ions that are required for catalysis referred to as?
Cofactors
What is the combination of a cofactor plus the protein portion known as?
Holoenzyme
What does the term 'trypsin' represent in enzyme nomenclature?
Practical name
Which naming is composed by citing the name of the substrate molecule and following that with the suffix, -ase?
Systematic naming
What is the most widely recognized isoenzyme based on?
Electrophoretic migration
Test your knowledge of catalysis, including homogeneous and heterogeneous catalysis, as well as enzyme specificity and the capacity of protein catalysts to recognize and bind specific molecules. This quiz covers the fundamentals of catalysts and enzymes.
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