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Questions and Answers
What is the term used to describe the number of substrate molecules converted to product per enzyme?
What is the term used to describe the number of substrate molecules converted to product per enzyme?
- Enzyme activity
- Reaction rate
- Catalytic efficiency
- Turnover number (correct)
Which of the following statements about enzyme selectivity is true?
Which of the following statements about enzyme selectivity is true?
- Enzymes can catalyze multiple types of chemical reactions
- Enzyme selectivity depends on the concentration of the substrate
- Enzymes are not selective and can act on any substrate
- Enzymes interact with one or more substrates and catalyze only one type of chemical reaction (correct)
Which of the following statements about enzymes is incorrect?
Which of the following statements about enzymes is incorrect?
- Measurement of enzyme activities is used in the diagnosis and monitoring of diseases
- Enzymes undergo qualitative and quantitative changes before and after the reaction (correct)
- Enzymes are localized in specific organelles within the cell
- Enzymes are involved in various cellular processes such as glycolysis and fatty acid synthesis
In which organelle does the TCA cycle take place?
In which organelle does the TCA cycle take place?
Which of the following processes occurs in the cytosol?
Which of the following processes occurs in the cytosol?
Which enzyme deficiency is associated with the hereditary metabolic disease galactosemia?
Which enzyme deficiency is associated with the hereditary metabolic disease galactosemia?
What type of bonds do reversible inhibitors form with enzymes?
What type of bonds do reversible inhibitors form with enzymes?
Which enzyme regulation mechanism involves the phosphorylation of a serine residue?
Which enzyme regulation mechanism involves the phosphorylation of a serine residue?
In what form are some enzymes initially synthesized before being activated?
In what form are some enzymes initially synthesized before being activated?
Which type of plasma enzymes have diagnostic importance in tissue or organ diseases?
Which type of plasma enzymes have diagnostic importance in tissue or organ diseases?
What is the primary function of enzymes related to the chylomicron mechanism in plasma?
What is the primary function of enzymes related to the chylomicron mechanism in plasma?
What distinguishes irreversible inhibitors from reversible ones in terms of enzyme binding?
What distinguishes irreversible inhibitors from reversible ones in terms of enzyme binding?
Which model describes the enzyme as a rigid structure that only binds to substrates with a complementary shape?
Which model describes the enzyme as a rigid structure that only binds to substrates with a complementary shape?
What is the term used for enzymes that are initially synthesized in an inactive form and become active later when they reach their functional location?
What is the term used for enzymes that are initially synthesized in an inactive form and become active later when they reach their functional location?
Which part of a compound enzyme is responsible for its catalytic activity?
Which part of a compound enzyme is responsible for its catalytic activity?
What is the term used for different variants of the same enzyme that catalyze the same reaction but have different physicochemical properties?
What is the term used for different variants of the same enzyme that catalyze the same reaction but have different physicochemical properties?
According to the induced fit model, what happens when a substrate binds to an enzyme?
According to the induced fit model, what happens when a substrate binds to an enzyme?
Which of the following statements about proton transfer is true?
Which of the following statements about proton transfer is true?
What is the role of water in specific acid-base catalysis?
What is the role of water in specific acid-base catalysis?
Which type of enzymes are composed solely of protein?
Which type of enzymes are composed solely of protein?
In general acid-base catalysis, what serves as the proton donor or acceptor?
In general acid-base catalysis, what serves as the proton donor or acceptor?
How does the speed of a reaction increase due to general acid-base catalysis?
How does the speed of a reaction increase due to general acid-base catalysis?
Which of the following amino acid residues is NOT involved in covalent catalysis?
Which of the following amino acid residues is NOT involved in covalent catalysis?
In the catalysis of chymotrypsin, what is the role of water?
In the catalysis of chymotrypsin, what is the role of water?
Which of the following is NOT one of the 11 important serum enzymes in clinical diagnosis mentioned in the text?
Which of the following is NOT one of the 11 important serum enzymes in clinical diagnosis mentioned in the text?
What is the name of the energy barrier that separates the reacting molecules and products in a chemical reaction?
What is the name of the energy barrier that separates the reacting molecules and products in a chemical reaction?
What is the main purpose of measuring enzyme activity?
What is the main purpose of measuring enzyme activity?
Which two factors are important to consider when choosing a method for enzyme activity determination?
Which two factors are important to consider when choosing a method for enzyme activity determination?
What is the name of the two-step process that describes the mechanism of action of enzymes?
What is the name of the two-step process that describes the mechanism of action of enzymes?
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