Select ALL the statements that accurately describe the differences between a hemiacetal and a glycoside. Statements: -An O-glycosidic bond does not involve an anomeric carbon atom.
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- Identify the component monosaccharides of each of the following compounds and describe the type of glycosidic linkage in each.Given the following disaccharide: Sugar frament A has what structure (ketal, acetal, hemiacetal, hemiketal)? The two monosaccharides are linked by what bond (α-1,3-glycosidic bond, β-1,3-fructosidic bond, β-1,3-glycosidic bond, α-1,3-fructosidic bond)Which of the following is true of glucitol? It exists as both ring and open-chain structures with the open-chain structure predominating. It exists only as an open-chain structure. It exists as both ring and open-chain structures with the ring structure predominating. It exists only as a ring structure.
- Identify the chiral carbon in each of the following compounds: a. citronellol; one enantiomer has the odor of geranium b. alanine, an amino acidListed below are descriptions that may belong to amylose, amylopectin, both, or it may not belong to either. Write A if it describes amylose, B if it describes amylopectin, AB if the statement applies to both, or O if it doesn’t apply to either. 1. Its monosaccharides are bound by at least one α-1,4-glycosidic bond. 2. It contains α-1,6-glycosidic bonds. 3. It can be broken down by the enzyme α-amylase. 4. A polysaccharide made up of gulose. 5. It can form a double helix.Refer back to Figure 4.9. What type of isomers areacetone and propanal? How many asymmetric carbons are present in aceticacid, glycine, and glycerol phosphate? Can these three molecules exist asforms that are enantiomers?
- Describe any two heteropolysaccharides in terms of: a. The types of monosaccharides involved b. types of glycosidic linkages, and c. possible hydrolysatesDraw the full structure of triglyceride 1-docosahexanoyl-2-arachidonyl-3-elaidyl-glycerol with proper stereochemistry, given the following information: docosahexanoic acid: 22:6n-3, arachidonic acid: 20:4n-6, elaidic acid: trans-18:1n-9,All of the following are repeating units of glycosaminoglycans EXCEPT: A. hyaluronate B. heparin C. hemoglobin D. keratin sulfate E. chondroitin 6-sulfate
- Which of the following are saponifiable lipids? (Recall that ester bonds are broken by base hydrolysis.)(a) Progesterone (b) Glyceryl trioleate(c) A sphingomyelin (d) Prostaglandin E1(e) A cerebroside (f) A lecithinWhich of the following is the correct glycosidic bond linkage of the disaccharide shown? β-(1→6) glycosidic bond α-(1→6) glycosidic bond α-(1→1) glycosidic bond β-(1→1) glycosidic bondHow can chirality and stereoisomers influence the pharmacology, bioactivity, toxicology, pharmacokinetics, and metabolism of ibuprofen? Please provide a detailed summary of what might happen if, for instance, the R enantiomer isn't able to be inverted to the bioactive S enantiomer.