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The tangled shape of a polypeptide is its ________ structure, which gives it maximum stability.
- A. primary
- B. secondary
- C. tertiary
- D. quaternary
- E. denaturalized
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- . The arrangement of a polypeptide into afibrous or globular shape is called itsa. primary structure.b. secondary structure.c. tertiary structure.d. quaternary structure.e. conjugated structure.Which bonds are planar (cannot rotate) in a polypeptide backbone? A. Ca-C bonds B. C-N bonds C. N-Cabonds D. Ca-Ca bondsDenaturation of a protein A. adds hydrogen bonds to the primary level of protein structure. B. breaks hydrogen bonds in the primary level of protein structure. C. adds hydrogen bonds to the secondary and tertiary levels of protein structure. D. breaks hydrogen bonds in the secondary and tertiary levels of protein structure.
- Which of the following describes the tertiary structure of proteins? A. Helices and sheets formed from hydrogen bonds between the amino acids of polypeptides B. The functional domains that form from interactions between different parts of the polypeptide C. The association of multiple polypeptides D. The linear sequence of amino acids making up the polypeptideProtein Structure and Folding:a. Explain how changes in a protein’s amino acid sequence can change the way it behaves in water.b. Explain how changes in a protein’s amino acid sequence can change the way it interacts with othermolecules.c. Explain how changes in a protein’s amino acid sequence can change the way it forms secondary andtertiary structures when placed in water.Three proteins K, L and M have the same % composition. Which is TRUE? A. The three proteins will have the same amino acid sequence B. The tertiary structure of these proteins will depend on the sequence of their amino acids C. The three proteins will have the same function D. The three proteins will have the same shape
- A type of secondary structure found in proteins is a. an α helix. b. a β sheet. c. both a and b. d. none of the above.The tertiary structure of many proteins reveals that nonpolar portions are primarily on the ________ of the molecule a. interior b. exteriorBiological activity of proteins is dependent on which? A. peptide bonds B. thermodynamic properties C. an aqueous environment D. protein conformation
- the primary structure of proteins is held together by a. covalent bonds b. hydrogen bonds c. disulfide bonds d. ionic bondsThis structure of a protein comes from the further bending and folding of pleated sheets and helices: A. primary B. secondary C. tertiary D. quaternaryThe arrangement of subunits to form a larger protein is called the protein's a. primary structure b. secondary structure c. tertiary structure d. quaternary structure
