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- Below is the structure of glycine. Draw a tripeptide composed exclusively of glycine. Label the N-terminus and C-terminus. Draw a box around the peptide bonds.Lactose is a disaccharide formed by the formation of a bond between glucose and glycosidic; lactose glycosidic; galactose hydrogen; sucrose hydrogen; fructoseThe first and major effect in denaturation of proteins is that: a. peptide bonds break. b. helices unwind. c. sheet structures unfold. d. tertiary structure is changed. e. quaternary structures disassemble.
- Explain what happens if even one amino acid is substituted for another in a polypeptide chain. Provide a specific example.The synthetic process by which monomers are covalently linked is (a) hydrolysis (b) isomerization (c) condensation (d) glycosidic linkage (e) ester linkageWhich 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
- Variations in three-dimensional shapes among proteins are due tobonding between thea. amino groups.b. R groups.c. ion groups.d. H atomsTertiary structure of protein is maintained by Select one: a. Hydrogen bond b. All of these c. Di-sulphide bond d. Peptide bondThe tangled shape of a polypeptide is its ________ structure, which gives it maximum stability. A. primary B. secondary C. tertiary D. quaternary E. denaturalized
- A peptide has the following sequence: Glu – His – Trp – Ser – Gly – Leu – Arg – Pro – Gly Using a table of pKa values, determine the net charge of the molecule at pH 3 pH8 pH 11Serine, cysteine, threonine can participate in hydrogen bonding. Valine cannot. Explain differences in structure that cause this.draw the peptide structure n-GYSEDAK-c in low pH
