12. In some proteins, hydrogen bonding occurs between polar residues and the surrounding aqueous environment, forcing the polar residues to the exterior of the protein. What are the interactions between the polar residues and the aqueous environment called? a. hydrophilic interactions b. salt bridges c. nonpolar interactions d. hydrophobic interactions e. dispersion forces

12. In some proteins, hydrogen bonding occurs between polar residues and the surrounding aqueous environment, forcing the polar residues to the exterior of the protein. What are the interactions between the polar residues and the aqueous environment called? a. hydrophilic interactions b. salt bridges c. nonpolar interactions d. hydrophobic interactions e. dispersion forces

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Which of the following can impact the structure of a protein? Check all that apply. External conditions have no impact on protein structure pH Temperature Salt concentration
Which intermolecular interaction is being disrupted when a protein is denatured using acids? a. Disulfide bonds b. Salt bridges c. Hydrogen bonds d. Hydrophobic reactions
The building blocks of all proteins are a. pleated sheetsb. alpha amino acidsc. alpha helicesd. tertiary structurese. none of these
6. Is this amino acid L- or D-, and how can you tell? Н -ŅH3 CH3 a. D-, because all amino acids are D. b. D-, because the amine is on the right. c. D-, because the amine is on the left. d. L-, because the amine is on the left.
i 3. Identify which of the following pairs of amino acid residues can have London dispersion forces between their side chains. a. Alanine and Glycine b. Leucine and Isoleucine Valine and Asparagine C. d. Threonine and Tyrosine
RESET 4. A peptide bond is classified as a(n) C. phosphate bond. A. ester B. amine D. amide E. none of these Cancel Done 中。
a. Tyrosine b. Alanine c. Leucine d. Asparagine 5. Draw a picture showing the details of the hydrogen bonding between the side chain and the protein backbone for any amino acid residues from exercise 4 that are capable.
Which statement is false about a globular protein that performs its biological function as a single independent polypeptide chain? O a. Its tertiary structure is likely stabilized by the interactions of amino acid side chains in non-neighboring regions of the polypeptide chain. It likely has extensive quaternary structure to maintain its globular shape. b. Oc. Non-covalent forces are the primary source of stability for the secondary and tertiary structure. Ⓒd. it could contain a-helices that are stabilized by hydrogen bonding.
Which interaction(s) is/are involved in the primary structure of a protein (choose all that apply)? a. hydrogen bonding b. salt bridge c. hydrophobic effects d. covalent peptide bond
Table 25.2 The Proteins in Egg White Albumen Protein % of total Natural Function Ovalbumin 54 Nourishment for chick, may block digestive enzymes Qvotransferrin Ovomucoid 12 Binds iron 11 Blocks digestive enzymes Globulins Plug defects in membranes and shell Enzyme that digests bacterial cell walls Thickens albumen, inhibits viruses 8 Lysozyme 3.5 Ovomucin 1.5 Avidin 0.06 Binds the vitamin biotin Others 10 Bind vitamins; block digestive enzymes... 3 Image licensed under creative commons. 4 On Food and Cooking by Harold McGee, 2004, Scribner Copyright © 2016 Wiley, Inc. Page 5
Which of the following is an example of tertiary protein structure: Group of answer choices a. beta pleated sheets b. alpha helices c. arrangement of multiple subunits d. disulfide bonds
Almost all proteins are composed from a set of about _____ amino acids.a. 4b. 10c. 20d. 50 ______ amino acids are considered essential.a. 5b. 10c. 15d. 20 An amino acid that has an indole group side chain.a. Trpb. Phec. Tyrd. ProWhich of the following is the simplest amino acid?a. Alab. Glyc. Vald. ProWhich of these will not give a blue solution with Ninhydrin testa. Prob. Phec. Alad. CysA neutral molecule with a positive and negative electrical charge.a. Isoelectric pointb. Zwitterionsc. Bufferd. Amphoteric3 amino acids joined together by two peptide bonds.a. Dipeptideb. Tripeptidec. Tetrapeptided. PolypeptideAn amino acid that can form disulfide bondsa. Cysteineb. Methioninec. Cystined. SerineWhich of the following is not a property of amino acidsa. Bufferb. Isoelectric pointc. Zwitterionsd. Insoluble in waterThe protein primary structure is held together bya. Hydrogen bondsb. Disulfide bondsc. Peptide bondsd. Protein bonds