Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 5.1, Problem 3CC
WHAT IF? Ø If you eat a piece of fish, what reactions must occur for the amino acid monomers in the protein of the fish to be converted to new proteins in your body?
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H3N.
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Amino acids are bonded together in a linear polymer to form peptides or proteins.
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A small peptide is shown below. Define the two ends of this peptide.
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N
O
II
A) I is the N terminus; II is the C terminus
B) I is the C terminus; II is the N terminus
C) I is the 5' terminus; II is the 3' terminus
D) I is the 3' terminus; II is the 5' terminus
. Assume that some protein molecule, in its folded native state, has
one favored conformation. But, when it is denatured, it becomes a
"random coil," with many possible conformations.
(a) What must be the sign of AS for the change: native → denatured?
(b) How will the contribution of AS for native → denatured affect
the favorability of the process? What apparent requirement does this
impose on AH if proteins are to be stable structures?
in determining the structure of a fully folded protein?
involving the amino acid side chains of the polypeptide. Which has the largest effect
5.
hydrogen bonding
ionic interactions
a)
b)
c)
d)
hydrophobic interactions
van der Waals interactions
none of the above
The misfolded, insoluble, and aggregated proteins characteristic of Alzheimer's
disease and Parkinson's disease are known as:
zymogens
b)
c)
d)
e)
open quaternary structure proteins
protein domains
amyloid deposits
molecular chaperones
6.
Chapter 5 Solutions
Campbell Biology
Ch. 5.1 - What are the four main classes of large biological...Ch. 5.1 - How many molecules of water are needed to...Ch. 5.1 - WHAT IF? If you eat a piece of fish, what...Ch. 5.2 - Write the formula for a monosaccharide that has...Ch. 5.2 - Prob. 2CCCh. 5.2 - WHAT IF? After a cow is given antibiotics to...Ch. 5.3 - Compare the structure of a fat (triglyceride) with...Ch. 5.3 - Why are human sex hormones considered lipids?Ch. 5.3 - Prob. 3CCCh. 5.4 - What parts of a polypeptide participate in the...
Ch. 5.4 - Prob. 2CCCh. 5.4 - Prob. 3CCCh. 5.4 - WHAT IF? Where would you expect a polypeptide...Ch. 5.5 - Prob. 1CCCh. 5.5 - Prob. 2CCCh. 5.6 - How would sequencing the entire genome of an...Ch. 5.6 - Given the function of DNA, why would you expect...Ch. 5 - What is the fundamental basis for the differences...Ch. 5 - Compare the composition, structure, and function...Ch. 5 - Why are lipids not considered to be polymers or...Ch. 5 - Explain the basis for the great diversity of...Ch. 5 - What role does complementary base pairing play in...Ch. 5 - Prob. 5.6CRCh. 5 - Which of the following categories includes all...Ch. 5 - The enzyme amylase can break glycosidic linkages...Ch. 5 - Prob. 3TYUCh. 5 - The structural level of a protein least affected...Ch. 5 - Enzymes that break down DNA catalyze the...Ch. 5 - The molecular formula for glucose is C6H12O6. What...Ch. 5 - Which of the following pairs of base sequences...Ch. 5 - Construct a table that organizes the following...Ch. 5 - Prob. 9TYUCh. 5 - EVOLUTION CONNECTION Comparisons of amino acid...Ch. 5 - SCIENTIFIC INQUIRY Suppose you are a research...Ch. 5 - WRITE ABOUT A THEME: ORGANIZATION Proteins, which...Ch. 5 - SYNTHESIZE YOUR KNOWLEDGE Given that the function...
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- Draw all the Amino Acids- All 19 – Draw out the Peptide backbone atoms and draw out the side chains for the amino acid at pH 1, 7 and 13. alanine - ala - A arginine - arg - R asparagine - asn - N aspartic acid - asp - D cysteine - cys - C glutamine - gln - Q glutamic acid - glu - E glycine - gly - G histidine - his - H isoleucine - ile - I leucine - leu - L lysine - lys - K methionine - met - M phenylalanine - phe - F proline - pro - P serine - ser - S threonine - thr - T tryptophan - trp - W tyrosine - tyr - Y valine - val - Varrow_forwardCombine your amino acids to show the synthesis of the following di and tripeptides. Just as we saw buildin carbohydrates last week, creating larger molecules will require dehydration synthesis reactions. Two mole will be joined together, with one contributing the H and the other the OH to form a molecule of H₂0. With t models, use the OH from the carboxyl group of one amino acid and the H from the amino group of the ne form the water molecule, and join the remaining C with the N to form the peptide bond. Dipeptide and Tripeptides Ala - Glu Ala - Glu - Gly H Structure Ho O ·NH₂ How many H₂0 molecules were produced during the synthesis? Questions 1 Describe the structure of a typical amino acid why the name "amino acid" makes sense,arrow_forward. Consider a small protein containing 101 amino acid residues. The protein will have 200 bonds about which rotation can occur. Assume that three orientations are possible about each of these bonds. (a) Based on these assumptions, about how many random-coil conforma- tions will be possible for this protein? (b) The estimate obtained in (a) is surely too large. Give one reason why.arrow_forward
- SC . " V Highlight each peptide bond in the molecule below. In addition, list the common names of the smaller molecules that would be released if all the peptide bonds were hydrolyzed. You can add more rows to the table if you need to. (Note: you do not need to list water.) If there are no peptide bonds in the molecule, just check the no peptide bonds box below the drawing area. ! 1 Explanation Ono peptide bonds. Q A H₂N- CH N Add Row 2 molecules released if peptide bonds hydrolyzed (list one name per row) Check W CH₂ S X 1 option command # 3 H E D $ 4 C R F % 5 -NH–CH–COO CH₂ CH₂ V T 80 G O : ; { [ I command option + + 11 Q 11 ? 1 I E d } 1arrow_forward. In glycoproteins, what are the three amino acids to whichthe carbohydrate groups are most frequently linked? Towhat functional group is the glycan linked in each case?arrow_forwardChoose all that apply. This molecule is O || O-P-O-P-O-P-O- 0 O a lipid O™ one of the building blocks of protein a nucleotide triphosphate ATP one of the building blocks of RNA a protein O™ one of the building blocks of DNA a nucleic acid a carbohydrate the energy currency of the cell an amino acid OIPIO о O™ N H₂N OH OH N Narrow_forward
- Net charge Number of Identical Disulfide subunits Protein Molecular Weight at pH 7 subunits bonds 1 50,000 +3 1 No 50,000 (25,000 for each subunit) 2 -2 2 Yes No 25,000 Yes 100,000 (50,000 for each subunit) 4 -1 2 No Yes, between subunits 100,000 (25,000 for each subunit) 5 +2 4 No Yes, between all subunitsarrow_forwardChoose from A-F. This amino acid may serve as a phosphorylation site, and turn on or off the protein. H3N-C-H H3N-C-H CH2 H2N CH 2 H-C-OH CH2 H2C CH2 CH3 CH3 Choice "A" Choice "B" Choice "C" COO H,N-C-H H,N-C-H H3N-C-H CH2 CH2 C=CH C-NH CH2 NH | CH SH C-N Choice "E" Choice "F" Choice "D"arrow_forward1. What is the isoelectric point (pI) of lysine which has pKa values of 2.1 for the α carboxyl group, 9.7 for the α amino group and 10.5 for the side chain amino group? 2. Which of the following is most likely to be found on the exterior of a protein? A) Pro B) Trp C) Ser D) Glu 3. The type of reaction that forms a peptide bond is A) Elimination B) Hydrolysis C) Nucleophilic substitution D) Condensationarrow_forward
- On 4. Below is a polypeptide with an unknown number of amino acids. On the diagram below: a. Circle EVERY peptide bond b. Circle and number each amino acid from 1, 2, 3, and so on; from left to right c. Label each amino acid as polar, non-polar, or electrically charged d. Label the N-terminus and C-terminus e. Select three pairs of amino acids that could potentially interact to influence tertiary structure AND state the bond/force/interaction type involved in each pair. H₂N-CH-C-N-CH-C- CH₂ CH₂ CH₂ NH CINH NH₂ Accessibility: Investigate CH₂ -NH -CH-C-N- CH-OH CH3 -CH-C-N CH₂ CH₂ -N- OH CHIC-OH CH₂ OHarrow_forward→x D. Two physical 5. A protein unfolds according to the scheme N properties (property 1 and 2) are measured at three points in the unfolding reaction where the true values of fp are 0.2, 0.5 and 0.8. The corresponding values of K = fx/ fp are 1.0, 0.4 and 0.125. For property 1, d₁ = 0.1; for property 2, d₁ = 0.2. (a) Write an equation that can be used to calculate fapp. (b) Calculate fapp using d₁ = 0.1 (property 1) and fapp using d₁ = 0.2 (property 2). (c) The error in measurement of each physical property is 5 %. Can you detect the presence of the intermediate by measuring the physical properties? Explain your answerarrow_forwardDraw an amino acid. Join it to another amino acid via dehydration synthesis to make a dipeptide. Label all parts of each amino acid and the peptide bond. Now draw two dipeptides one on top and one below it-connect the dipeptides on top to the ones on the bottom with a line to show that they are part of two strands of one protein molecule. Connect the two dipeptides via hydrogen bonds.arrow_forward
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