1) Substrates bind in the ____ of enzymes, which chemically alter the substrate forming a _____,...
1) Substrates bind in the ____ of enzymes, which chemically alter the substrate forming a _____, which is released by the enzyme.
Select one:
a. Promoter; pathway
b. Quaternary structure; covalent bonds
c. Substrate pocket; new substrate
d. Active site; product
e. Proteins; partial charge
2) Anyssa is lactose intolerant.
She is unable to anabolize lactose.
Select one:
True
False
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1) Substrates bind in the ____ of enzymes, which chemically
alter the substrate forming a _____,...
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates....
Which statement about enzyme catalyzed reactions is not true? a) enzymes form complexes with their substrates. b) enzymes lower the activation energy for chemical reactions. c) enzymes change the K eq for chemical reactions. d) many enzymes change shape slightly when substrate binds. e) reactions occur at the "active site" of enzymes, where a precise 3D orientation of amino acids is an important feature of catalysis.
1. Protein kinases phosphorylate target enzymes and as a result enzymes become activated or inactivated. Which...
1. Protein kinases phosphorylate target enzymes and as a result enzymes become activated or inactivated. Which of the statements are TRUE? (Multiple answers: You can select more than one option) A. Phosphorylated enzymes behave like competitive inhibitors B The presence of a phosphate acts as a non-competitive inhibitor/activator. No change in Km but significant change in Vmax C. The presence of a phosphate group induces a conformational change that modifies the affinity and catalytic ability of a target enzyme D....
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and ...
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and KM values are shown below for enzyme-substrate pairs. Which of the following enzymes is most efficient in converting the substrate into the product? b) kes.-4x10s s", KM-0.026 M d)k,,-5.7 x1o's", K-2x10s M c)人at-900 s", KM-2.5 × 10.5 M A2. Which of the following enzyme reaction mechanisms has multiple substrates? a) induced-fit e) Michaclis-Menton b) random sequential d) reversible covalent modification e) None...
The rate of an enzyme-catalyzed reaction initially increases with an increase in the substrate concentration, but...
The rate of an enzyme-catalyzed reaction initially increases with an increase in the substrate concentration, but eventually reaches a maximum value, even though the concentration of substrate continues to increase. Which of the following best explains why? O As substrate concentration increases, the substrates preferentially bind with each other instead of the active site of the enzyme, and no additional catalysis occurs. As substrate concentration increases, the active sites of all the enzyme molecules become occupied with substrate molecules, and...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B)...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B) lowering the activation energy of a reaction. C) lowering entropy in a system. D) increasing the temperature near a reaction. E) altering the equilibrium of a reaction. Which of the following contributes to the specificity of enzymes? A) Each enzyme has a wide range of temperature and pH optimum B) Each enzyme has an active site that interacts with many C) Substrates themselves may...
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C....
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C. receptor D. ion channel 7. Enzymes are capable of increasing the rate of a chemical reaction through which of the following means? A. changing AG from positive to negative B. reducing the activation energy C. changing the equilibrium point of the reaction D. increasing kinetic energy 8. When a molecule can occupy the same active site as the substrate, a situation called can result...
I have the need to complete the sentences. Thanks for your help < Energy and Enzymes...
I have the need to complete the sentences.
Thanks for your help
< Energy and Enzymes Building Vocabulary: Enzymes Part A Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help an enzyme, causing it to lose its shape and High temperatures or changes in pH can biological activity Enzymes speed up chemical reactions by lowering the proceed much more quickly An enzyme is considered a(n) used up activation energy induced...
Which statement about enzyme catalysis is false? All of the active site amino acids are next...
Which statement about enzyme catalysis is false? All of the active site amino acids are next to each other in the primary sequence. Enzymes speed up reactions by forming specific non-covalent bonds between the enzyme amino acids and the transition state molecule. Some enzymes require other molecules, called cofactors, to carry out chemical reactions. Generally, the most important amino acids for an enzyme's function are those in the active site. Question 6 1 pt When [S] is much more than...
#50 Which is false concerning competitive inhibition? Alter the Km. Substrate and inhibitor can both bind...
#50
Which is false concerning competitive inhibition? Alter the Km. Substrate and inhibitor can both bind to the active site. Sulfonamides are competitive inhibitors of PABA (para-aminobenzoic acid). It involves an allosteric enzyme and interaction at the allosteric site. All of the above are true. Which of the following is false concerning obligate aerobes? superoxide dismutase cataloes grow better aerobically examples are members of the genera Mycobacterium, Bacillus, and Pseudomonas all of the above are true Which statement is false...
Rodrigo is an enzyme engineer. He wants to know which of four peptide substrates is bound...
Rodrigo is an enzyme engineer. He wants to know which of four peptide substrates is bound most tightly by his engineered enzyme. Which value should he measure and pay attention to? Km KCAT Vo Both A and B kcat, [S], and [E]t Rodrigo's enzyme was assayed with three substrates (A, B, and C). The SAME enzyme concentration used was for each of the three reactions. The results of the three experiments are plotted as Lineweaver-Burke plots below. Considering what you...
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and KM values are shown below for enzyme-substrate pairs. Which of the following enzymes is most efficient in converting the substrate into the product? b) kes.-4x10s s", KM-0.026 M d)k,,-5.7 x1o's", K-2x10s M c)人at-900 s", KM-2.5 × 10.5 M A2. Which of the following enzyme reaction mechanisms has multiple substrates? a) induced-fit e) Michaclis-Menton b) random sequential d) reversible covalent modification e) None...
The rate of an enzyme-catalyzed reaction initially increases with an increase in the substrate concentration, but eventually reaches a maximum value, even though the concentration of substrate continues to increase. Which of the following best explains why? O As substrate concentration increases, the substrates preferentially bind with each other instead of the active site of the enzyme, and no additional catalysis occurs. As substrate concentration increases, the active sites of all the enzyme molecules become occupied with substrate molecules, and...
Enzymes are biological catalysts and Unction by A) increasing the free energy in a system. B) lowering the activation energy of a reaction. C) lowering entropy in a system. D) increasing the temperature near a reaction. E) altering the equilibrium of a reaction. Which of the following contributes to the specificity of enzymes? A) Each enzyme has a wide range of temperature and pH optimum B) Each enzyme has an active site that interacts with many C) Substrates themselves may...
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C. receptor D. ion channel 7. Enzymes are capable of increasing the rate of a chemical reaction through which of the following means? A. changing AG from positive to negative B. reducing the activation energy C. changing the equilibrium point of the reaction D. increasing kinetic energy 8. When a molecule can occupy the same active site as the substrate, a situation called can result...
I have the need to complete the sentences.
Thanks for your help
< Energy and Enzymes Building Vocabulary: Enzymes Part A Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help an enzyme, causing it to lose its shape and High temperatures or changes in pH can biological activity Enzymes speed up chemical reactions by lowering the proceed much more quickly An enzyme is considered a(n) used up activation energy induced...
Which statement about enzyme catalysis is false? All of the active site amino acids are next to each other in the primary sequence. Enzymes speed up reactions by forming specific non-covalent bonds between the enzyme amino acids and the transition state molecule. Some enzymes require other molecules, called cofactors, to carry out chemical reactions. Generally, the most important amino acids for an enzyme's function are those in the active site. Question 6 1 pt When [S] is much more than...
#50
Which is false concerning competitive inhibition? Alter the Km. Substrate and inhibitor can both bind to the active site. Sulfonamides are competitive inhibitors of PABA (para-aminobenzoic acid). It involves an allosteric enzyme and interaction at the allosteric site. All of the above are true. Which of the following is false concerning obligate aerobes? superoxide dismutase cataloes grow better aerobically examples are members of the genera Mycobacterium, Bacillus, and Pseudomonas all of the above are true Which statement is false...
Rodrigo is an enzyme engineer. He wants to know which of four peptide substrates is bound most tightly by his engineered enzyme. Which value should he measure and pay attention to? Km KCAT Vo Both A and B kcat, [S], and [E]t Rodrigo's enzyme was assayed with three substrates (A, B, and C). The SAME enzyme concentration used was for each of the three reactions. The results of the three experiments are plotted as Lineweaver-Burke plots below. Considering what you...
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