Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 4.3, Problem 3CC
DRAW IT Ø Suggose you had an organic molecule such as cysteine (see Figure 4.9, sulfhydryl group example), and you chemically removed the —NH2 group and replaced it with —COOH. Draw this structure. How would this change the chemical properties of the molecule? Is the central carbon asymmetric before the change? After?
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Check out a sample textbook solutionStudents have asked these similar questions
Following is a structural formula for the amino acid cysteine:
11
HS-CH₂-CH-C-OH
NH₂
Name the three functional groups in cysteine.
a. What is the name of the highlighted functional
group?
HS-CH₂-CH-C-OH
NH₂
O carboxyl group
O amino group
O thiol group
O disulfide group
What is the name of the highlighted functional
group?
O
HS-CH₂-CH-C-OH
NH₂
O carboxyl group
O amino group
O thiol group
O disulfide group
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Next
Draw all three staggered conformations for the following compound, viewed along the C₂-C3 bond. Determine which conformation is
the most stable, taking into account gauche interactions and hydrogen-bonding interactions. (J. Phys. Chem. A 2001, 105, 6991-6997)
Provide a reason for your choice by identifying all of the interactions that led to your decision.
H
H&COH
C₂
C3
HỌ CH
CH3
Which of the following is the most stable staggered conformer?
Me
H
OH
Me
OH
Me-
Me
Me
H
Conformer A
OH
OH
OH
HO
H
H
H
Conformer B
Conformer C
Me
Conformer B because the anti OH groups avoid hydrogen bonding, which is a destabilizing effect.
Conformer A because there are only two gauche interactions, and hydrogen bonding between the two OH groups is a
stabilizing effect.
Conformer C because there is no steric strain for Me-OH gauche interactions and hydrogen bonding between the two OH
groups is a stabilizing effect.
Conformer B because the large OH groups are anti to each other.
Draw the structures of L-Cysteine from highly protonated to depronated form. Note Structure A as the most protonated form. Provide the charge of each structure.
(Answer structure C and D pls)
Chapter 4 Solutions
Campbell Biology (10th Edition)
Ch. 4.1 - Why was Whler astonished to find he had made urea?Ch. 4.1 - VISUAL SKILLS See Figure 4.2. Miller carried out...Ch. 4.2 - DRAW IT (a) Draw a structural formula for C2H4....Ch. 4.2 - Prob. 2CCCh. 4.2 - How are gasoline and fat chemically similar?Ch. 4.2 - VISUAL SKILLS See Figures 4.5a and 4.7. Can...Ch. 4.3 - VISUAL SKILLS What does the term amino acid...Ch. 4.3 - What chemical change occurs to ATP when it reacts...Ch. 4.3 - DRAW IT Suggose you had an organic molecule such...Ch. 4 - How did Stanley Miller's experiments support the...
Ch. 4 - Prob. 4.2CRCh. 4 - In what ways does a methyl group differ chemically...Ch. 4 - Organic chemistry is currently defined as (A) the...Ch. 4 - Prob. 2TYUCh. 4 - MAKE CONNECTIONS Which chemical group is most...Ch. 4 - VISUAL SKILLS Visualize the structural formula of...Ch. 4 - visual skills Choose the term that correctly...Ch. 4 - VISUAL SKILLS Identify the asymmetric carbon in...Ch. 4 - Which action could produce a carbonyl group? (A)...Ch. 4 - Prob. 8TYUCh. 4 - Prob. 9TYUCh. 4 - SCIENTIFIC INQUIRY 50 years ago, pregnant women...Ch. 4 - WRITE ABOUT A THEME: ORGANIZATION In 1918, an...Ch. 4 - SYNTHESIZE YOUR KNOWLEDGE Explain how the chemical...
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