N-linked oligosaccharides can be covalently linked to proteins at which amino acid? a. Gly b. Ser c. Glu d. Tyr e. Asn
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N-linked oligosaccharides can be covalently linked to proteins at which amino acid?
a. Gly
b. Ser
c. Glu
d. Tyr
e. Asn
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- Between which two amino acids do disulfide bonds form? A.Alanine-Glycine B.Serine-Threonine C.Cysteine-cysteine D.Methionine-methioninewhich is true when speaking about the secondary structure of a protein A. invoves R group binding b. involves binding to other protiens c. involves hydrogen bonding of the protien backbone d. involves peptide bindingWhich part of the amino acid varies between different types of amino acids? A. The amino group B. The carboxyl group C. The side chain D. All of the above
- The difference between a polypeptide and a protein is a. that proteins are polypeptides folded up into a functional three-dimensional conformation b. that proteins are precursors of polypeptides c. that polypeptides are made of protein folded up into a functional three-dimensional conformation d. that proteins are always made with many polypeptidesProteins are synthesized by linking amino acids with bonds. a. disulfi de c. peptide b. glycosidic d. esterWhich of these amino acids could be found in the transmembrane portion of a protein? a) asparticacid b) cysteine c) glycine d)isoleucine e) proline
- What is the chemical difference between cellulose and chitin? Select one: a. Replacement of the hydroxyl group at C5 with an acetylated amino group b. Replacement of the hydroxyl group at C3 with an acetylated amino group c. Replacement of the hydroxyl group at C4 with an acetylated amino group d. Replacement of the hydroxyl group at C2 with an acetylated amino groupWhat causes a protein to fold? A. Chemical interactions between the specific R-groups of the protein chain B. Chemical interactions that draw certain nucleotides together C. Chemical attractions between amino groups and acid groups that form covalent bonds D. The protein folds into the shape that is most physically stable, depending upon the number of amino acids in the chainWhich of the following statements about amino acids is true? A. Twenty two amino acids are commonly found in proteins. B. Amino acids are often linked together to form branched polymers. C. All amino acids contain an NH2 and a COOH group. D. Most of the amino acids used in protein biosynthesis have charged side chains.
- The functionality of carbohydrates is increased through a. formation of sugar acids b. formation of amino sugars c. formation of glycoconjugates d. formation of ester phosphatesWhat two products can be generated from the transamination of an amino acid? a. a carbon skeleton and the amino acid glutamate b. ketone bodies and glycerol c. palmitic acid and fatty acids d. fatty acids and glycerolWhich of the following statements is/are TRUE for globular proteins? A. sensitive to changes in pH & heat B. regular amino acid sequence C. soluble in water D. structural role
