16) Which of the following occurs when proteins fold?O The protein adopts Its lowest energy state formO Most of the non-polar and hydrophoblc residues are found burled inthe protelnO The charged residues are found on the outside of the protelinO Secondary structural elements formO All of the above17) Which of the following is NOT true about an a-helix?O The side chains extend radially outward from thehelix axisDRis held together primarly by hydrogen bondsOt usually involves multiple polypeptide chainsO The peptide backbone is on the inside of the helix

Protein folding means the conversion of a linear polypeptide chain into a definite three-dimensional…

16) Which of the following occurs when proteins fold? O The protein adopts Its lowest energy state form O Most of the non-polar and hydrophoblc residues are found burled in the proteln O The charged residues are found on the outside of the proteln O Secondary structural elements form O All of the above

16) Which of the following occurs when proteins fold? O The protein adopts Its lowest energy state form O Most of the non-polar and hydrophoblc residues are found burled in the proteln O The charged residues are found on the outside of the proteln O Secondary structural elements form O All of the above

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter3: The Chemistry Of Life: Organic Compounds

Section: Chapter Questions

Problem 9TYU: Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary...

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Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary and secondary (b) primary and tertiary (c) secondary, tertiary, and quaternary (d) primary, secondary, and tertiary (e) primary, secondary, tertiary, and quaternary
The helix and the pleated sheet are part of which protein structure? primary secondary tertiary quaternary
Which 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 end
Which of the following statements are correct about protein structure (select all that apply)? A. Post-translational modifications such as glycosylation or phosphorylation may alter the structure of a protein B. Only amino acids with a net charge may interact with other amino acids C. The 3D structure of a protein is determined primarily by the protein backbone/main chain conformation while the amino acid sidechains play only a minor role. D. Hydrophobic interactions play a key role in protein folding E. Amino acid sidechains contribute to 3D structure through their ability to form hydrogen bonds with other amino acids
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Indicate the level(s) of protein structure to which each of thefollowing contributes:a. amino acid sequenceb. b-pleated sheetc. hydrogen bondd. disulfide bond
Which levels of protein structure are determined by primary structure (i.e. the specific amino acid sequence beginning at the amino terminus of the polypeptide)? Mark all that apply. 1. secondary structure (alpha helices and/or beta sheets) 2. tertiary structure (the folded, three-dimensional shape of a protein) 3. amino acids 4. peptide bonds
Which of the following is NOT an example of protein secondary structure? a. alpha-helix b. beta sheets c. beta turn d. coiled coil e. loops
The three-dimensional conformation of a protein may be strongly influenced by amino acid residues that are very far apart in sequence. This relationship is in contrast to secondary structure, where the amino acid residues are: a. always side by side. b. generally near each other in sequence. c. invariably restricted to about 7 of the 20 standard amino acids. d. often on different polypeptide strands. e. usually near the polypeptide chain's amino terminus or carboxyl terminus.
Which of the following is NOT TRUE about secondary structure in proteins? (More than one may apply) A. Stabilized by non-covalent bonds B. Is illustrated by DnaA molecules interacting in the ori C. Unravels at high temperatures when intramolecular non-covalent bonds are destroyed D. Occurs in a subregion of a protein E. Exemplified by beta sheets F. Describes the order of amino acids in a polypeptide
Show below is a polypeptide comprised of 3 α-helices and 5 β-sheets joined by randomcoil. Characterizetheforces that stabilize the tertiarystructure and draw the interacting side chains ofd) Cys Cys
Draw beta sheet with backbone hydrogen bonds, is this structure on the interior or exterior of the protein and why? Region 1: -Ser-Thr-Glu-His- Region 2: -Asp-Tyr-Lys-Asn