Gram-positive bacteria possess which glycoconjugate on their outer surface? A. g
ID: 532530 • Letter: G
Question
Gram-positive bacteria possess which glycoconjugate on their outer surface? A. glycopeptides B. lipopolysaccharide C. proteoglycan D. peptidoglycan E. glyconucleotide Amylopectin is a branched polysaccharide with which gycosidic linkages? A. alpha (1, 4) and alpha(1, 6) B. C beta[1, 4] and beta (1, 6) C. alpha(1, 2) and alpha(1, 6) D. alpha(1, 2) and alpha(1, 6) The ribose sugar within the structure of DNA is a modified in which way? A. an extra carbon B. it is lacking a OH at the 5 position C. it a ketose D. it is lacking a OH at the 2 position E. it is lacking a OH at the 3 position In RNA, the base is connected to which carbon of ribose in the nucleotide structure? A. 1 B. 1 C. 2 D. 2 E. 5 For a glucose homopolysaccharide, which of the following glycosidic linkages would promote the formation of a helical structure? A. alpha(1, 4) B. beta (1, 4) C. beta [1, 6] D. alpha[1, 6] E. alpha (1, 2) Which class of glycoconjugates contain both D and L-amino acids? A. glycolipids B. peptidoglycans C. glycolipid D. lipopolysaccharide E. lipoprotein Which class of lipids are the main components of cell membranes? A. isoprenoids B. wax esters C. sphingolipids D. phospholipids E. none of these Which fatty acid would have the higher melting point? A. 20:0 B. 20:1 Which of the following lipid derivatives is classified as an elcosanoid? A. oleic acid B. carotenoids C. phospholipids D. sphingomyelin E. leukotriene Which of following structures contains a hydrophilic interior? A. micelles B. hemoglobin C. myoglobin D. liposome E. DNA Terpenes and carotenoids are biosynthesized from which lipids? A. isoprenoids B. wax esters C. sphingolipids D. phospholipids E. triacylglycerols The prosthetic group on sphingolipids are: A. amino acids B. a peptide C. carbohydrates D. a heme group E. zinc Neutral lipids are normally associated with which purpose: A. signaling B. structure C. catalysis D. energy E. information storage The active transport of solutes across a membrane is typically coupled to which type of reaction? A. exergonic B. endergonic C. non-spontaneus D. entropically negative E. exothermic The membrane spanning portions of transmembrane proteins are often composed of what type supersecondary and/or 2 structures? A. beta-barrels & alpha-helices B. Greek key & beta turns C. beta-barrels & Greek keys D. double helices and alpha-helices E. beta-meander and alpha-helices Which of the following statements best describes the Na-glucose transporter of the intestinal ?Explanation / Answer
Ans 12. D . Peptidoglycan
The cell surface of gram positive bacteria contain peptidoglycan , whereas gram negative contain lipopolysachharides .
These glycoconjugates are the potential binding sites for lectins and offer a targeted drug delivery.
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