Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 4, Problem 2TYK
Summary Introduction
Introduction:
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Using the amino acid phenylalanine, draw and specify the nature of each following tertiary structure interactions between:a. two cysteinesb. arginine and glutamic acidc. isoleucine and tyrosine
For each amino acid: [1] draw the L enantiomer in a Fischer projection; [2] classify the amino acid as neutral, acidic, or basic; [3] give the three-letter symbol; [4] give the one-letter symbol. a. arginine c. glutamic acid b. tyrosine d. valine
Draw the structure and name the following polypeptides:
1. SRAL
b. ENIRYTAK
Chapter 4 Solutions
Study Guide for Campbell Biology
Ch. 4 - How did Millers classic experiment relate to the...Ch. 4 - Define structural isomers, cis-trans isomers, and...Ch. 4 - Practice recognizing the functional groups by...Ch. 4 - Construct a concept map that illustrates your...Ch. 4 - Fill in the following table to review the...Ch. 4 - Carbons valence of four most directly results from...Ch. 4 - Prob. 2TYKCh. 4 - Hydrocarbons are not soluble in water because a....Ch. 4 - Prob. 4TYKCh. 4 - Which of the following is not true of an...
Ch. 4 - Enantiomers are a. molecules that are mirror...Ch. 4 - Which statement is not true about structural...Ch. 4 - Prob. 8TYKCh. 4 - The orbitals of a carbon atom form a(n) a....Ch. 4 - The following ribose molecule contains how many...Ch. 4 - Cis-trans isomers require a. highly polar...Ch. 4 - The chemical group that can cause an organic...Ch. 4 - The chemical group that confers acidic properties...Ch. 4 - Structural isomersCh. 4 - Prob. 2TYKMCh. 4 - can have enantiomersCh. 4 - carboxylic acidCh. 4 - can make cross-link in proteinCh. 4 - hydrophilicCh. 4 - hydrocarbonCh. 4 - amino acidCh. 4 - organic phosphateCh. 4 - aldehydeCh. 4 - amineCh. 4 - ketone
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- a. which amino acid can form a covalent bond with its side chain? b. which amino acid can contribute to protein tertiary and quarternary structure by forming a covalent bond?arrow_forwardWrite the structure, identify the groups and describe the chemical properties of these amino acids. A. alanine B. Serine C. Leucine D. Phenylalanine E. Tryptophanarrow_forwardWhich of the following statement about proteins is correct a. alpha helix and Beta pleated sheets are considered quaternary structures b. a single polypeptide only has primary sytructure, secondary, tertiary, and quaternary structures require more than one polypeptide c. there are 30 essential amino acids that are the monomer building blocks of proteins d. polypeptides have a distinct polarity (directionality) with one end refered to as the free amino end, and the other called the free carboxyl endarrow_forward
- A) Discuss the significance of anomeric carbon in carbohydrates. B) Explain the differences between globular and fibrous proteins. C) Explain the changes in the secondary and tertiary structure of proteins for the following: (a) Milk is heated at 60°C to make yogurt. (b) Prior to giving an injection, the skin is wiped with an alcohol swab.arrow_forwardb) It's said that secondary structures form because of intra- and intermolecular hydrogen bonding involving the peptide bond. Describe what is going on to further stabilize secondary structure through these interactions.arrow_forwardDescribe why G-C bonding is stronger than A-T. Why is it important?arrow_forward
- a.Describe the bonds which hold a quaternary protein molecule together. b. Discuss the reasons why glycine and proline are not usually found in an alpha helix of proteins.arrow_forwardWhich of the following is incorrect? (₁) a. A heterodimer is composed by two identical polypeptide chains b. The polypeptide chains in a multimeric protein are called subunits A homotrimer can be represented with the Greek letter alpha with a sub-index 3 d. Monomeric proteins do not have quaternary structure c.arrow_forwardFormulate a dipeptide (draw its structure) from the amino acids serine (ser) and alanine (ala) and indicateo. a) Peptide bond. b) Amino end c) Carboxyl end. d) Radicals (-R)arrow_forward
- Which of the following is not true about the properties of a peptide (amide) bond? a.The bond order of the peptide bond is 2 b.The bond is in resonance which makes it (and the 6 atoms around it and included within it) planar c.Delocalization of electrons through the peptide bond contributes to a net dipole for the bond d.Peptide bonds are very, very strongly favored to be in the trans conformation, but proline is an exception because it is more isoenergetic due to its sidechain ring, and can be cis.arrow_forwardIndicate whether each of the following stereoisomers is true or false. a. Stereoisomers always have the same molecular formula. b. Stereoisomers always have the same structural formula. c. Stereoisomers are always nonsuperimposable mirror images of each other. d. Stereoisomers always possess handedness.arrow_forwardClassify each of the following amino acid as polar or nonpolar. If polar, indicate if the R group is neutral, acidic, it basic. Indicate if each is hydrophobic or hydrophilic. a. lysine b. arginine c. methionine d. tyrosinearrow_forward
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