Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
8th Edition
ISBN: 9780134015187
Author: John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher: PEARSON
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Question
Chapter 19, Problem 19.45AP
(a)
Interpretation Introduction
Interpretation:
The general reaction which the enzyme dehydrase catalyse should be determined.
Concept introduction:
Enzyme:
- It is a protein or a molecule which can act as a catalyst for a biological reaction.
- Does not affect the equilibrium point of the reaction.
- Active site of the enzyme is the region where the reaction takes place.
- Enzyme’s activity can be specific which means the activity is limited to a certain substrate and a certain type of reaction and it is referred to as specificity of the enzyme.
Classification of enzymes:
- Oxidoreductases
- Transferases
- Hydrolases
- Isomerases
- Lyases
- Ligases
(b)
Interpretation Introduction
Interpretation:
The general reaction which the enzyme carboxylases catalyse should be determined.
Concept introduction:
Enzyme:
- It is a protein or a molecule which can act as a catalyst for a biological reaction.
- Does not affect the equilibrium point of the reaction.
- Active site of the enzyme is the region where the reaction takes place.
- Enzyme’s activity can be specific which means the activity is limited to a certain substrate and a certain type of reaction and it is referred to as specificity of the enzyme.
Classification of enzymes:
- Oxidoreductases
- Transferases
- Hydrolases
- Isomerases
- Lyases
- Ligases
(c)
Interpretation Introduction
Interpretation:
The general reaction in which the enzyme Proteases catalyse should be determined.
Concept introduction:
Enzyme:
- It is a protein or a molecule which can act as a catalyst for a biological reaction.
- Does not affect the equilibrium point of the reaction.
- Active site of the enzyme is the region where the reaction takes place.
- Enzyme’s activity can be specific which means the activity is limited to a certain substrate and a certain type of reaction and it is referred to as specificity of the enzyme.
Classification of enzymes:
- Oxidoreductases
- Transferases
- Hydrolases
- Isomerases
- Lyases
- Ligases
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What kind of reaction does each of these enzymes catalyze?(a) A ligase(b) A transmethylase(c) A reductase
There are six major groups of enzymes. The categories are based on the types of
reactions that they catalyze.
What type of enzyme converts a molecule to another structure with the same
formula through breaking bonds and forming new bonds.
A) Lyases
B) Transferases
C) Hydrolases
D) Isomerases
E) Ligases
Which of the following statement regarding enzymes is false?
a.) they speed up reaction rates
b.) they work within narrow temperature and pH ranges
c.) The active site binds the substarate
d.) They are consumed in the reactions they catalyze
Chapter 19 Solutions
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
Ch. 19.1 - Prob. 19.1PCh. 19.1 - The enzyme LDH converts lactate to pyruvate. In...Ch. 19.2 - The cofactors NAD+, Cu2+, Zn2+, coenzyme A, FAD,...Ch. 19.3 - Describe the reactions that you would expect these...Ch. 19.3 - Prob. 19.5PCh. 19.3 - Prob. 19.6PCh. 19.3 - Prob. 19.7PCh. 19.3 - Prob. 19.8PCh. 19.4 - Prob. 19.9KCPCh. 19.5 - Prob. 19.10KCP
Ch. 19.5 - Prob. 19.11PCh. 19.5 - Prob. 19.12PCh. 19.6 - Prob. 19.13PCh. 19.6 - Prob. 19.14PCh. 19.7 - (a) L-Threonine is converted to L-isoleucine in a...Ch. 19.8 - AZT (zidovudine) inhibits the synthesis of the HIV...Ch. 19.8 - Prob. 19.3CIAPCh. 19.8 - Prob. 19.16PCh. 19.9 - Does the enzyme described in each of the following...Ch. 19.9 - Prob. 19.18PCh. 19.9 - Compare the structures of vitamin A and vitamin C....Ch. 19.9 - Prob. 19.20PCh. 19.9 - Prob. 19.21KCPCh. 19.9 - Prob. 19.22PCh. 19.9 - Prob. 19.4CIAPCh. 19.9 - Prob. 19.6CIAPCh. 19.9 - Prob. 19.7CIAPCh. 19.9 - Enzyme levels in blood are often elevated in...Ch. 19.9 - Prob. 19.9CIAPCh. 19.9 - Prob. 19.23PCh. 19 - Prob. 19.24UKCCh. 19 - Prob. 19.25UKCCh. 19 - Prob. 19.26UKCCh. 19 - Prob. 19.27UKCCh. 19 - Prob. 19.28APCh. 19 - Explain how the following mechanisms regulate...Ch. 19 - Prob. 19.30APCh. 19 - Prob. 19.31APCh. 19 - Prob. 19.32APCh. 19 - Prob. 19.33APCh. 19 - Prob. 19.34APCh. 19 - Prob. 19.35APCh. 19 - Prob. 19.36APCh. 19 - Prob. 19.37APCh. 19 - Name an enzyme that acts on each molecule. (a)...Ch. 19 - Name an enzyme that acts on each molecule. (a)...Ch. 19 - What features of enzymes make them so specific in...Ch. 19 - Describe in general terms how enzymes act as...Ch. 19 - Prob. 19.42APCh. 19 - Prob. 19.43APCh. 19 - Prob. 19.44APCh. 19 - Prob. 19.45APCh. 19 - Prob. 19.46APCh. 19 - Prob. 19.47APCh. 19 - What is the difference between the lock-and-key...Ch. 19 - Why is the induced-fit model a more likely model...Ch. 19 - Prob. 19.50APCh. 19 - Prob. 19.51APCh. 19 - How do you explain the observation that pepsin, a...Ch. 19 - Prob. 19.53APCh. 19 - Prob. 19.54APCh. 19 - Prob. 19.55APCh. 19 - Prob. 19.56APCh. 19 - Prob. 19.57APCh. 19 - The text discusses three forms of enzyme...Ch. 19 - Prob. 19.59APCh. 19 - Prob. 19.60APCh. 19 - Prob. 19.62APCh. 19 - Prob. 19.63APCh. 19 - The meat tenderizer used in cooking is primarily...Ch. 19 - Prob. 19.65APCh. 19 - Why do allosteric enzymes have two types of...Ch. 19 - Prob. 19.67APCh. 19 - Prob. 19.68APCh. 19 - Prob. 19.69APCh. 19 - Prob. 19.70APCh. 19 - Prob. 19.71APCh. 19 - Prob. 19.72APCh. 19 - Prob. 19.73APCh. 19 - Prob. 19.74APCh. 19 - Prob. 19.75APCh. 19 - Prob. 19.76APCh. 19 - Prob. 19.77APCh. 19 - Prob. 19.78APCh. 19 - Prob. 19.79APCh. 19 - Prob. 19.80CPCh. 19 - Prob. 19.81CPCh. 19 - Prob. 19.82CPCh. 19 - Prob. 19.83CPCh. 19 - Prob. 19.84CPCh. 19 - Prob. 19.85CPCh. 19 - Prob. 19.86CPCh. 19 - Prob. 19.87CPCh. 19 - Prob. 19.88GPCh. 19 - The ability to change a selected amino acid...Ch. 19 - Prob. 19.90GPCh. 19 - Prob. 19.91GP
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- give the properties of the enzyme (e.g., shape, size, colour, price). a) amylase b) invertasearrow_forwarda) Explain in your own words, under what conditions pyruvate is converted into lactic acid (2pt). b) Does lactic acid fermentation occur in all cells of the body? (0.5pt). c) Explain in your own words your answer to part (b) (1pt) Answers must be in full sentences, include correct grammar and spelling, and contain biological correct information (0.5pt).arrow_forwardWhich of the following statements are true? For each, explain why or why not. (a) All coenzymes are electrontransfer agents. (b) Coenzymes do not contain phosphorus or sulfur. (c) Generating ATP is a way of storing energy.arrow_forward
- What broad sorts of reactions are catalyzed by the following enzymes?a) Cytochrome c kinases Isomerases (b)Synthetases (c)arrow_forwardCells carry out anabolic as well as catabolic pathways, with some enzymes functioning in both types of pathways. (a) Explain why these enzymes catalyze near-equilibrium reactions. (b) Explain why opposing anabolic and catabolic pathways must have different enzymes for at least one of the steps.arrow_forwardEach of the following enzymes catalyzes what sort of reaction?citrate decarboxylase (a. citrate decarboxylase) (b. citrate decarboxyoxalate reductase (b)c. transaminase of serinearrow_forward
- Which statement best summarizes the structure of an enzyme before and after it catalyzes a reaction? a.) Its structure is the same. b.) It gains a water molecule in the reaction. c.) It loses a carbon atom in the reaction. d.) It loses a hydrogen atom in the reaction,arrow_forwardIn what way(s) are Trypsin, Chymotrypsin, and Elastase different? (choose 1) a) They target different amino acid residues in proteins. b) They use different reaction mechanisms c) Both of the above d) Neither of the abovearrow_forwardIn the metabolic pathway, A->B->C->D->E what effect would molecule E likely have on the enzyme that catalyzes A->B? (The answer is A. Could you justify the reason why the answer is A?) a) Allosteric inhibitor b)Allosteric activator c) Competitive inhibitor d) feedback activator e) coenzymearrow_forward
- Name an enzyme that acts on each molecule.(a) Amylose (b) Peroxide (c) DNAarrow_forwardWhich of the following is a cofactor and which is a coenzyme?(a) Cu2+ (b) Tetrahydrofolate(c) NAD+ (d) Mg2+arrow_forwardBased on which of the following enzymes Hydrolysis reactions are catalyzed? a) Hydrolase b) Oxidoreductase c) Isomerase d) Ligasearrow_forward
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