EBK GENERAL, ORGANIC, & BIOLOGICAL CHEM
3rd Edition
ISBN: 9781259298424
Author: SMITH
Publisher: VST
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Textbook Question
Chapter 21, Problem 21.84P
How will each of the following changes affect the rate of an enzyme-catalyzed reaction whose optimum pH is 7.4?
a. decreasing the temperature from
b. increasing the temperature from
c. increasing the pH from 7.4 to 10
d. increasing the pH from 5 to 7.5
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How will each of the following changes affect the rate of an enzyme-catalyzed reaction whose optimum pH is 7.4? a. decreasing the temperature from 37 °C to 5 °C b. increasing the temperature from 37 °C to 90 °C c. increasing the pH from 7.4 to 10 d. increasing the pH from 5 to 7.4
1. Describe enthalpy with respect to free energy change.
2. Describe the term endergonic with respect to a system's
free energy change.
3. Distinguish between free energy of a reaction and
activation energy for that same reaction.
4. What is an enzyme mechanism?
A. Match the following Enzymes and Substrates:
Enzyme
III.
Substrates
a. Sucrase
1. Maltose
b. Amylase
2. Amylose
C. Lactase
3. Sucrose
d. Maltase
4. Arginine
e. Arginase
5. Lactose
Chapter 21 Solutions
EBK GENERAL, ORGANIC, & BIOLOGICAL CHEM
Ch. 21.2 - In addition to the amino and carboxyl groups, what...Ch. 21.2 - Draw both enantiomers of each amino acid in...Ch. 21.2 - Prob. 21.3PCh. 21.3 - Draw the structure of the amino acid valine at...Ch. 21.3 - Identify the amino acid shown with all uncharged...Ch. 21.4 - Identify the N-terminal and C-terminal amino acid...Ch. 21.4 - Prob. 21.7PCh. 21.4 - Prob. 21.8PCh. 21.4 - Prob. 21.9PCh. 21.4 - Prob. 21.10P
Ch. 21.4 - Prob. 21.11PCh. 21.5 - Prob. 21.12PCh. 21.6 - Prob. 21.13PCh. 21.6 - Prob. 21.14PCh. 21.6 - Prob. 21.15PCh. 21.7 - Why is hemoglobin more water soluble than ...Ch. 21.8 - Prob. 21.17PCh. 21.8 - Prob. 21.18PCh. 21.9 - Prob. 21.19PCh. 21.9 - Prob. 21.20PCh. 21.9 - Prob. 21.21PCh. 21.9 - Prob. 21.22PCh. 21.10 - Prob. 21.23PCh. 21.10 - Prob. 21.24PCh. 21.10 - Prob. 21.25PCh. 21.10 - Prob. 21.26PCh. 21.10 - Prob. 21.27PCh. 21.10 - Prob. 21.28PCh. 21.10 - Prob. 21.29PCh. 21.11 - Prob. 21.30PCh. 21 - The amino acid alanine is a solid at room...Ch. 21 - Why is phenylalanine water soluble but...Ch. 21 - Draw the structure of a naturally occurring amino...Ch. 21 - Draw the structure of a naturally occurring amino...Ch. 21 - For each amino acid: [1] draw the L enantiomer in...Ch. 21 - For each amino acid: [1] draw the L enantiomer in...Ch. 21 - Draw both enantiomers of each amino acid and label...Ch. 21 - Which of the following Fischer projections...Ch. 21 - For each amino acid: [1] give the name; [2] give...Ch. 21 - For each amino acid: [1] give the name; [2] give...Ch. 21 - (a) Identify the amino acid shown with all...Ch. 21 - Prob. 21.42PCh. 21 - Prob. 21.43PCh. 21 - Draw the structure of the neutral, positively...Ch. 21 - Prob. 21.45PCh. 21 - Prob. 21.46PCh. 21 - (a) Draw the structure of the two possible...Ch. 21 - Prob. 21.48PCh. 21 - Prob. 21.49PCh. 21 - For each tripeptide: [1] draw the structure of the...Ch. 21 - Prob. 21.51PCh. 21 - For each tripeptide: [1] identify the amino acids...Ch. 21 - Prob. 21.53PCh. 21 - Prob. 21.54PCh. 21 - Prob. 21.55PCh. 21 - Prob. 21.56PCh. 21 - Prob. 21.57PCh. 21 - Prob. 21.58PCh. 21 - Prob. 21.59PCh. 21 - Prob. 21.60PCh. 21 - Prob. 21.61PCh. 21 - Prob. 21.62PCh. 21 - What type of intermolecular forces exist between...Ch. 21 - What type of interaction occur at each of the...Ch. 21 - Prob. 21.65PCh. 21 - Draw the structures of the amino acids tyrosine...Ch. 21 - Prob. 21.67PCh. 21 - Prob. 21.68PCh. 21 - Prob. 21.69PCh. 21 - Prob. 21.70PCh. 21 - Prob. 21.71PCh. 21 - Hydrogen bonding stabilizes both the secondary and...Ch. 21 - Prob. 21.73PCh. 21 - Prob. 21.74PCh. 21 - Prob. 21.75PCh. 21 - Prob. 21.76PCh. 21 - What class of enzyme catalyzes each of the...Ch. 21 - What class of enzyme catalyzes each of the...Ch. 21 - Prob. 21.79PCh. 21 - Prob. 21.80PCh. 21 - Prob. 21.81PCh. 21 - What kind of reaction is catalyzed by each of the...Ch. 21 - Prob. 21.83PCh. 21 - How will each of the following changes affect the...Ch. 21 - Prob. 21.85PCh. 21 - Prob. 21.86PCh. 21 - Prob. 21.87PCh. 21 - Prob. 21.88PCh. 21 - Prob. 21.89PCh. 21 - Prob. 21.90PCh. 21 - Prob. 21.91PCh. 21 - Prob. 21.92PCh. 21 - Why must vegetarian diets be carefully balanced?Ch. 21 - Prob. 21.94PCh. 21 - Sometimes an incision is cauterized (burned) to...Ch. 21 - Why is insulin administered by injection instead...Ch. 21 - Prob. 21.97PCh. 21 - The silk produced by a silkworm is a protein with...Ch. 21 - Explain the difference in the mechanism of action...Ch. 21 - Prob. 21.100PCh. 21 - Prob. 21.101CPCh. 21 - Suggest a reason for the following observation....
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Which of the following enzyme functional groups is in a form in which it could serve as a general acid catalyst to enhance a reaction rate? B. A. H₂C OH B C O OE -NH2 C. H₂C H-NN-H D. H₂C ·0™ E. α-NH₂arrow_forwardb. Aspartate c. Tryptophan d. Alanine 8. Write the products for the following hydrolysis or condensation reactions. a. HgC. HgN NH3 b. H,O 9. How would the following changes affect enzyme activity for an enzyme whose opi conditions are normal body temperature and physiological pH? a. Raising the temperature from 37 °C to 60 °Carrow_forwardSubstrate Enzyme-substrate complex 1. Is this an example of a lock & key or induced fit model of an enzyme? > Enzymearrow_forward
- 1.The fundamental difference between competitive and noncompetitive inhibition is A. the degree of cooperativity of the reaction B. the size of the active site of the enzyme C. the manner of binding of substrate to the enzyme D. the manner of binding of inhibitor to the enzyme 2. Which of the following statements is correct? A. Although enzyme cannot change the value of Delta G, but it can change the value of delta G0 . B. Enzyme can increase the rate of a reaction because it can turn the value of DG0‡ from positive to negative C. Both A and B D. Neither A nor Barrow_forward3. Which of the following statements is FALSE? A. Enzymes speed up the attainment of a reaction equilibrium. B. Enzymes make reactions 10³ to 1020 times faster. C. Enzymes are proteins. D. Enzymes lower the amount of energy needed for a reaction. E. Enzymes are chemically unchanged during the actual catalytic process. 4. The polar head of cerebroside in the membrane can form a. Hydrogen bonds b. lon-dipole interactions c. Both A and B d. Neither A nor B with water molecule.arrow_forward2. What class of enzyme would expect to catalyze the following reaction? H,NCHCNHCHCO H,NCHCOH H,0 R R a. Oxidoreductase b. Transferase c. Hydrolase d. Lyase e. Isomerasearrow_forward
- Which best describes the role of enzymes in a chemical reaction? A. They lower the activation energy in the reaction. B. They prevent the reaction from occurring. C. They are produced by the reaction. D. They are consumed by the reaction.arrow_forwardWhich of the following is NOT true regarding biomolecular reactions a. K association is the inverse of k dissociation b. Reate of reaction is dependent of rate of collision c. Irreversible reactions cannot reach equilibrium d. K association is the inverse of k dissociationarrow_forwardA catalase is an antioxidant enzyme that requires ferric ion for catalysis. Under conditions of iron deficiency, when the catalase lacks ferric ion, it would be referred to as: a. coenzyme b. apoenzyme c. prosthetic group d. holoenzymearrow_forward
- Substrates are held in place at the active site of an enzyme with: A. Weak, noncovalent, reversible interactions B. Strong, covalent, reversible interactions C. Weak, noncovalent, irreversible interactions D. Weak, covalent, reversible interactionsarrow_forwardHow do we measure enzyme kinetics? a. By measuring the initial rate (or velocity) b. By measuring the final rate (or velocity) c. By measuring the initial substrate concentration d. By measuring the final enzyme concentration e. By measuring the enzyme mechanism.arrow_forwardConsider the following biochemical reactions: H₂N-CH-C-NH-CH-C- CH3 _________ reaction A B с HO-CH2 H HO -OH H OH H H OH OH + H₂O ATP ADP enzyme 0 0 0 NADH enzyme enzyme type of enzyme needed to catalyze this reaction HỎ 2 H₂N- CH₂ NAD La pl OH -O, H он н ¸ÑLÒ¯ CH₂ H OH In the table below, write the type of enzyme that catalyzes each reaction. Note: be sure to use only the 6 standard enzyme types. OH A B сarrow_forward
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