What happens when a protein is denatured? The chemical bonds are not impacted, but the protein shape changes because hydrogen bonding is broken The chemical bonds are broken, resulting in amino acids Both chemical bonds and hydrogen bonding are broken Neither chemical bonds nor hydrogen bonding are broken

What happens when a protein is denatured? The chemical bonds are not impacted, but the protein shape changes because hydrogen bonding is broken The chemical bonds are broken, resulting in amino acids Both chemical bonds and hydrogen bonding are broken Neither chemical bonds nor hydrogen bonding are broken

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter2: Chemistry Of Life

Section: Chapter Questions

Problem 7RQ: Describe the four levels of protein structure. How do a proteins side groups influence its...

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Describe the four levels of protein structure. How do a proteins side groups influence its interactions with other substances? What happens when a protein is denatured?
Which one of the following statements about the structure of proteins is incorrect? O Disulfide bonds provide strong intrachain interactions. Hydrogen bonding stabilizes the a-helix proteins. Nonpolar groups tend to face the outside of a protein in an aqueous solution. lonized amino acid side chains can form salt bridges within a protein. O Heat can disrupt tertiary structure.
ch one of the following statements about protein structure is NOT correct? . Domains are discrete parts of a protein structure, usually associated with a particula function. true Beta-sheets are stabilised by hydrogen bonds between amino-hydrogens and carbonyl-oxygens from peptide bonds. no adjacent hydrogen bonding Proteins made from three polypeptide chains show quaternary structure. Yes Smaller protein domains come together to from supersecondary structures and mo
Which of the following constitutes the primary structure of a protein? O the folding of a polypeptide chain the polypeptide chains stacked on top of each other O the linear sequence of amino acids in a polypeptide chain several polypeptide subunits
Proteins are able to bind to which of the following types of biological molecules? O All are correct O Sugars O Nucleotides O Other proteins O Lipids
When a protein folds into a quaternary structure the outside amino acids are exposed to the aqueous (water rich) environment. These amino acid R likely have what chemical properties? O The amino acid R groups are polar and hydrophilic The amino acid R groups are non-polar and hydrophobic O The amino acid R groups have hydrocarbon functional groups O The amino acid R groups have unreactive functional groups
Which level of protein structure results entirely from hydrogen bonding? secondary primary O tertiary O quaternary
Mercury salts (Hg+2) will denature proteins by disrupting what? One or more answers is possible. H-bonds hydrophobic regions salt bridges disulfide bonds hydration layers
Which of the following statements about proteins is false? Proteins are sometimes conjugated with carbohydrates. Proteins consist of amino acids linked by peptide bonds. Primary structure determines tertiary structure. Globular proteins are generally very compact. O Nonpolar amino acid side chains generally are arranged on the surface where they interact with water.
Protein structure is directly related to function. Which of the following statements is true regarding this concept ? Polypeptide backbone -CH2 – CH, – CH2- CH2- NH3 0-c- CH - CH2 lonic bond Hydrogen ! bond C- NH2 Disulfide linkage CH CH2 HạC CH3 CH3 H3C CH -CH2 Hydrophobic interactions A. The primary structure consists of the DNA sequence. The secondary and tertiary structures are dependent on interactions between the DNA and RNA polymerase. Mutations resulting in changes one or more bases has the potential to destroy the structure, and therefore the function, of the protein. B. The primary structure consists of the amino acid sequence. The secondary and tertiary structures are dependent on interactions between the amino acid side chains. Mutations resulting in changes one or more amino acids has the potential to destroy the structure, and therefore the function, of the protein. C. The primary structure consists of the DNA sequence. The secondary structure consists of the amino acid…
Which of the following is the most fundamental determinant of the conformation of a protein? O a. The location of cysteine amino acids within the protein O b. The pH of the solution O c. Hydrogen bonding within the molecule O d. The primary structure of the protein O e. The quaternary structure
What chemical bond maintains alpha helixes of the proteins? O Disulfide bond O lonic bonds O Hydrogen bond O Peptide bond O Van-der-Waals bond