What are the glycosidic linkages in this structure
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- Question 5 (5 points) Match the following tripeptide with its given characteristic: contains sulfur? 1. Tyr-Lys-Met contains the largest number of nonpolar R groups? 2. Gly-Pro-Arg 3. Asp-Trp-Tyr contains two amino acids that contain aromatic ring? 4. Asp-His-Glu is known as glutathione? 5. Leu-Val-Phe is most negatively charged at pH 7? 6. Glu-Cys-Gly IdentificationQuestion 29 Kappa- and lota- carrageenans contain 3,6-anhydro-a-D-galactopyranosyl residues. True FalseQuestion 18 Match the following structural composition with the corresponding polysaccharide Linear homoglycan of glucose connected by a1-4 linkages a. agarose v Branched glycan formed by alternating units of D-galactose and L-galactose b. amylose v Linear sulfated chains of alternating B-D-galactopyranose and 3,6-anhydro- a-galactopyranosyl units c. amylopectin v Poly-B-Dmannopyranosyluronic acid and/or Poly-a-L-gulopyranosyluronic acid d. Alginate v Repeating Poly-D-galacturonic acid residues e. agaropectin deacetylated straight-chain amino-polysaccharide polymer linked in a B(1-4) type of linkage f. Pectin g. carrageenan h. chitosan
- Question 15 gal(a1-6)gal(a1-6)glc(a1-2B)fru. Which of the complete IUPAC of this tetrasaccharide? a-D-galactopyranosyl-(1–6)- a-D-galactopyranosyl-(1-6)- a-D-glucopyranosyl-(1-2)-B-fructofuranose a-D-galactopyranosyl-(1-6)- a-D-galactopyranosyl-(1-6)- a-D-glucopyranosyl-(1-2)-B-fructofuranoside O a-D-galactopyranosyl-(1-6)-B-D-galactopyranosyl-(1–6)- a-D-glucopyranosyl-(1-2)-8-fructofuranoside O a-D-galactopyranosyl-(1-6)-B-D-galactopyranosyl-(1–6)- a-D-glucopyranosyl-(1-2)-8-fructofuranoseQuestion 5 Which of the following disaccharide repeats is the most stable towards hydrolysis? O B-D-glcp-(1-6)-a-D-galp O a-D-glcp-(1-4)-a-D-galp O a-D-glcp-(1-2)-B-D-galp B-D-glcp-(1-4)-a-D-galpQuestion 13 Classify the following polysaccharides Chitin A. Heteroploysaccharide Cellulose B. Homopolysaccharide Peptidoglycan v Glycogen Glycosaminoglycan
- Question 17 O-linked oligosaccharides are commonly attached to the -OH group of O ribose tyrosine O lysine threonineQuestion 49 Glycoproteins contain oligosaccharide chains covalently bonded to a polypeptide while proteoglycans have one or more glycosaminoglycan chains attached to the protein. True O FalseQuestion 19 Which of the following amino acids is not part of tetramer that is bounded to NAM and glycine? O L-lys L-Glu D-Ala D-Glu O L-Ala
- question 1 : draw an α,α(2, 2) linkage between the two monosaccharides(two fructose ). label the glycosidic linkage. Must be Haworth question 2 : Draw glycosidic linkage between D-glucose linked to D-altrose with a β(1, 3) glycosidic linkage. label clearly the glycosidic linkage. must be Haworth.QUESTION 1 The full name of this amino acid is The 3-letter abbreviation is Please also note the following: • The non-ionized structure is shown • Spelling matters • For the acidic amino acids use the full name, e.g. "so-and-so acid" • Case does not matter • Do not include L- or D- in the name НООС- СH - NH2 CH3Question 8 The major structural component of the exoskeletons of invertebrates is composed of N-acetyl-B-D-galactosamine joined by B-1,4-glycosidic bonds True False