Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
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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1.Assuming this sequnce is enitrely alpha helical what is the hydrogen bond donor to the carbonyl oxygen of Met6?
2.what amino acids in the sequnce above would most likely face the hydrophoic core od a protein?
3. at ph7 which amino acid side chain can form ionic bonds.
WHAT IF? If you place a teaspoon of sugar in the bottom of a glass of water, it will dissolve completely overtime. Left longer, eventually the water will disappearand the sugar crystals will reappear. Explain theseobservations in terms of entropy.
kcat = ?
an enzyme has an aspartic acid in the active site with a pKa = 4.0 and the kcat for this enzyme is directly proportional to the fraction of this side chain that is ionized. If the kcat at pH = 4.0 is 52.9x103 s-1 what is the kcat for this enzymes at pH 3.5
Chapter 5 Solutions
Campbell Biology (11th Edition)
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 - WHAT IF? Where would you expect a polypeptide...Ch. 5.5 - DRAW IT Go to Figure 5.23a and, for the top three...Ch. 5.5 - DRAW IT In a DNA double helix, a region along one...Ch. 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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- MAKE CONNECTIONS Considering the chemical characteristics of the amino acidsvaline and glutamic acid (see Figure 5.14), propose a possible explanation for the dramaticeffect on protein function that occurs when valine is substituted for glutamic acid.arrow_forwardBeta ( ? ) sheets are a type of secondary structure in proteins. A segment of a single chain in an antiparallel ? sheet has a length of 80.5 Å . How many residues are in this segment?arrow_forward1. In a protein, why does when Ala is replaced with Ile, it loses its activity but when Lys is replaced by Arg and Leu to Ile, it only has little effect on protein structure and function? Explain. 2. Why do proteins cannot be denatured reversibly when they are chemically altered to change the chemical composition of certain side chains? Explain.arrow_forward
- Q5. What is so special about C-H bonds? A. They represent a high entropy form of energy. B. They are strongly electronegative and are easily reduced. C. They are the source of readily accessible electrons that are found in food. D. They are an important bonding arrangement ensuring the proper quaternary structure of proteins.arrow_forward23. Which is not a function of proteins: a) catalyzing reactions b) structural properties such as mechanical strength, shape, flexibility c) carries genetic information d) movement or contractionarrow_forwardQ3, What are the structural features of 7N7H (Viperin-like enzyme)? a) Must show 3D structure and brief description b) Primary structure – how many aa in the protein Viperin-like enzyme? c) Describe secondary and tertiary structure. d) Does Viperin-like enzyme have quaternary structure? appreciate any help thanksarrow_forward
- 5. Which class or reactions results in the making of all macromolecules: a) dehydration synthesis of monomersà polymers with the loss of an H2O with the addition of each monomer b) hydrolysis with the addition of one H2O for each reaction c) oxidation with the loss of an e- d) reduction with the gain of an e-arrow_forwardCheck the TRUE alternative in relation to amino acids and proteins: (a) the precipitation of a protein is always an irreversible process (b) the isoelectric point of amino acids with non-ionizable side chain is reached at neutral pH (= 7) (c) all the amino acids that make up our proteins have a chiral carbon whose configuration is (S) (d) denaturation affects all structural levels of proteins (e) all amino acids are soluble in water and have relatively high melting pointsarrow_forward1. In one (1) sentence point out a key structural similarity and difference in each of the following pair of terms: a) Cellulose and chitin b) α (alpha)- and β(beta)- anomers c) glycosidic and ester bonds d) triacylglycerols and glycerophospholipids e) linoleic and linolenic acidsarrow_forward
- Q1) -When an inhibitor is bound to the enzyme via a combination of (nonbonding interactions) electrostatic, H-bonding, and hydrophobic Interactions. This statement describes:a) reversible binder to an enzyme.b) irreversible binder to an enzyme.c) covalent binder to an enzyme.d) none of the choices -In protein X-ray crystallography, one of the following atoms is not solved: a. Hydrogen atoms.b. Carbon atoms.c. Nitrogen atomsd. Water molecules -In HM, loop modeling is difficult because: a) Surface loops tend to be involved in crystal contacts, leading to a significant conformational change.b) They are rigid bodies with low flexibility.c) They are less flexible than alpha helices.arrow_forward2. Explain in molecular terms why humans cannot use cellulose as a nutrient, but goats and cattle can.arrow_forward6. Which class or reactions results in the degradation of all macromolecules: a) dehydration synthesis of monomersà polymers with the loss of an H2O with the addition of each monomer b) hydrolysis with the addition of one H2O for each reaction c) oxidation with the loss of an e- d) reduction with the gain of an e-arrow_forward
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