Which of the following statements are true for enzymes? Check all that apply. The activity of some enzymes can be modulated by allosteric effectors. All enzymes are more active when dephosphorylated. Enzymes are subjected to a rapid turnover. All enzymes are more active when phosphorylated. The activity of some enzymes can be modulated by regulatory proteins.
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- Describe the mechanism of feedback inhibition and the role this process plays in controlling enzyme activity.Identify the statements that are TRUE regarding allosteric effectors. SELECT ALL THAT APPLY. A. Allosteric effectors may activate an enzyme B. Allosteric effectors bind to the active site of an enzyme C. Allosteric effectors can inhibit enzyme activity D.Allosteric effectors change the shape of an enzymeWhich of the following regulatory methods could never increase enzyme activity? phosphate removal by a phosphatase phosphate addition by a kinase allosteric regulation negative feedback positive feedback
- In addition to having 6 major classes that display different reactions, enzymes are specific and diverse, and are highly sensitive to ______________ and ______________(a) Lock and key model versus induced fit model of enzyme activity. (b) Competitive and non-competitive enzyme inhibitors. (c) Reversible and irreversible enzyme inhibitors.Which of the following enzyme classes catalyze reactions in which two molecules become covalently linked to each other? A. Kinase B. Hydrolase C. Isomerase D. Ligase
- Enzymes sometimes work as a key that opens the lock, if enzyme is the key then what is the physiological name of the molecule that could be the lock? Would the lock be Substrate?The energetic equivalent of two molecules of ATP is used to activate an amino acid, yet only one molecule of ATP is used. Explain.enzymes increase the rate of a chemical reaction by increasing the amount of activation energy needed decreasing the amount of activation energy needed decreasing the temperature increasing the temperature altering the chemical of substrates 2. which of the following is an example of quantitive data? the freshman class of the students contained 643 students, 372 males, and 271 females. the absorption peak of cobalt chloride was 510nm bromelain has optimal enzyme activity at a pH of 7 the color of cobalt chloride was pink the mass of the onion was 50 grams
- Amylase is an enzyme found in saliva that breaks down starch. The enzyme is currently functioning at its optimal pH of 7 and optimal temperature of 32oC. Which of the following could result in an increase in the reaction rate? Providing an environment with a pH of 9. Decreasing enzyme concentration. Placing the reactants in an environment at 10oC. Increasing substrate concentration.Which factor can impact enzyme activity? Select all that apply. Group of answer choices pH Temperature Competitive inhibitors Allosteric activatorsWhich of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formation