Concept explainers
To review:
Definition of the following terminologies:
1) Homoglycan
2) Heteroglycan
3) Amylose
4) Amylopectin
5) Enterocyte
Introduction:
Carbohydrates are the
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Biochemistry: The Molecular Basis of Life
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- Question 13 Classify the following polysaccharides Chitin A. Heteroploysaccharide Cellulose B. Homopolysaccharide Peptidoglycan v Glycogen Glycosaminoglycanarrow_forwardPKU is an abbreviation for what disorder? What are the symptoms of PKU? How can PKU be treated for a nearly normal life?arrow_forwardQuestion 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. chitosanarrow_forward
- If thymine nucleotides are degraded by the same enzymes as those catabolizing uridine nucleotides, give the structure of the thymine metabolite that corresponds to B-ureidopropionate.arrow_forward_____________ are stereoisomers of sugars that differ only in the configuration at an acetal or ketal carbon.arrow_forwardQuestion 9 The nucleoside monophosphates are seen in metabolic pathways because their phosphoric anhydride bonds can be hydrolyzed off for energy. A) True B) Falsearrow_forward
- A posttranslational modification that directs a polypeptide to a specific location is called a _____________ modification.arrow_forwardQuestion 18 There is energy requirement for every amino acid added in a growing polypeptide chain. A) True B) Falsearrow_forwardAdenine and guanine are examples of the_________________________ class of nitrogenous bases.arrow_forward
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