CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 4.2CR
In what ways does a methyl group differ chemically from the other six important chemical groups shown in Figure 4.9?
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One or more of the compounds shown below will satisfy each of the following
statements. Not all compounds may be used; some may be used twice. Put the
number(s) in the blank.
(1) Found in chitin.
(2) An L-saccharide.
(3) The first residue attached to asparagine in N-linked glycans.
(4) A uronic acid.
(5) A ketose.
CH,OH
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H
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OH
OH H
OH H
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H
NHC- CH,
Oso,
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(b)
(c)
CH,OH
CH,OH
CH,OH
C=0
CHOH
C=0
H-C- OH
CH,OH
но -с-н
ČH,OH
CH,OH
(d)
(e)
What are the structural differences between (a) purines and pyrimidines, and (b) ribose and deoxyribose sugars?
Consider the following tetrapeptide, written in a sequence according to normal
convention, from left to right:
Residue 1 is acidic; Residue 2 is proline (a large hydrophobic amino acid); Residue 3 is
cysteine (an amino acid containing a -CH2SH R-group); Residue 4 is basic.
Which of the following four general statements is TRUE regarding this tetrapeptide?
This tetrapeptide probably is not part of an alpha-helix, since the large size of the proline would disrupt the
consistency of the spiral shape.
Residue 3 belongs to the amino acid category known as "basic."
This tetrapeptide has the ability to form a disulfide linkage with an identical tetrapeptide.
The acidic residue (Residue #1) is at the amino terminus of this tetrapeptide.
3 of these 4 responses are correct
Chapter 4 Solutions
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
Ch. 4.1 - Prob. 1CCCh. 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 - In what ways does a methyl group differ chemically...
Ch. 4 - Prob. 4.3CRCh. 4 - Prob. 1TYUCh. 4 - Prob. 2TYUCh. 4 - MAKE CONNECTIONS Which chemical group is most...Ch. 4 - VISUAL SKILLS Visualize the structural formula of...Ch. 4 - Prob. 5TYUCh. 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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Consider the following tetrapeptide, written in a sequence according to normal convention, from left to right: Residue 1 is acidic; Residue 2 is cysteine (an amino acid containing a CH2SH R-group); Residue 3 is proline (a large hydrophobic amino acid); Residue 4 is basic. Which of the following four general statements is TRUE regarding this tetrapeptide? Residue 2 belongs to the amino acid category known as "basic." 3 of these 4 responses are correct O This tetrapeptide does not have the ability to form a disulfide linkage with an identical tetrapeptide. The acidic residue (Residue #1) is at the amino terminus of this tetrapeptide. This tetrapeptide could be part of an alpha-helix, since the large size of the proline would not have any impact on the consistency of the spiral shape.arrow_forwardProstaglandins are a naturally occurring class of compounds in our bodies that affect blood pressure, and cause inflammation and other physiological responses. The synthesis of prostaglandins in our bodies starts with arachidonic acid (see figure below), a long, unsaturated hydrocarbon containing four C=C double bonds and an acid functional group (–COOH). The stereoisomer with all cis double bonds is shown. Draw the stereoisomer with all trans double bonds. Draw the Lewis structures with the formal charges minimized. Do not include formal charges or electron pairs. You do not need to draw hydrogen atoms that are connected to carbon atoms.arrow_forwardConsider the structure of the tripeptide (in its fully protonated form) below. H H H + I || H₂N-C-C-N-C-C-N-C-C-OH 1 I | H CH₂ H CH₂ CH₂ T C=O OH AA1 0=0 || HC-CH3 CH3 AA2 AA3 0=C 1. Give the sequence of the tripeptide using the ONE-LETTER DESIGNATION (UPPERCASE LETTER) with NO spaces and symbols between each letter. 2. How many ionizable groups are there in the tripeptide? Give the numerical value (e.g., 10 not ten). • pH 10: {Choices: -2, -1, 0, +1, +2} 3. Which amino acid residue has one ionizable group left upon forming the tripeptide? {Choices: AA1, AA2, AA3, none, all} 4. Give the net charge of the dominant structure of the tripeptide at the given pH values. The pK, values of the amino acids are given in Table 1. • pH 4: {Choices: -2, -1, 0, +1, +2}arrow_forward
- Name the heterocyclic substituent found in the molecule shown according to the general type of nitrogen-containing ring to which it belongs.arrow_forwardFor each of the following, name an amino acid in which the R group contains it: a hydroxyl group, a sulfur atom, a second chiral carbon atom, an amino group, an amide group, an acid group, an aromatic ring, and a branched side chain.arrow_forwardWith the following amino acid side chain can the side chain of threonine form hydrogen bonds? Q.) Phenylalaninearrow_forward
- How many different tripeptides can be formed from three different amino acids, glutamine, histidine, and lysine? Draw the possible structures. Using three-letter abbreviations, give the names for all of the possible tripeptides.arrow_forwardConsult Table 18.3 and draw alanine. Label the functional groups and give the three-letter abbreviation and the one-letter abbreviation. What group does the side chain fall into?arrow_forwardWhich is the stable conformation of ribose sugar, Fischer or furanose ring? Why?arrow_forward
- What are pentoses? To what organic group do pentoses belong? Are nucleotides formed of only one type of pentose?arrow_forwardHow many different tetrapeptides can form from four different amino acids?arrow_forwardWhy do think nucleotides are also sometimes referred to as “bases” or “nucleotide bases”? What is the difference between a nucleotide and a nucleoside? Explain by giving an example, using structures. What kind of bond links a base to some sugar? Is the sugar an alpha or beta anomer? In what position(s) of the sugar does this occur? In what position(s) of the base does this occur? Instead of the term “Formation of a nucleoside”, what could the name of the reaction be? What functional group is being formed? Define the primary structure of DNA/RNA. Compare and contrast to the primary structure of proteins.arrow_forward
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