2. Lactose is a disaccharide sugar composed of galactose and glucose that is found in milk....
OPM Tue 28 orien.eu Part 1-Carbohydrates 1. Lactose is a disaccharide formed from galactose and glucose. CH, OH H O OH CH,OH H OH H OH -0 H Он H OH Н Lactose H OH a. Describe the glycosidic bond of lactose. b. Draw the two monosaccharides that result when the glycosidic bond is hydrolyzed. 2. Draw the disaccharide maltose that forms when two a-D-glucose molecules condense forming an a( 14) glycosidic bond.
2. Lactose is a disaccharide found in milk. Many adults throughout the world get sick from drinking milk because they cannot digest lactose. Lactose intolerance varies markedly among various human populations. For example, only about 3% of people of Danish descent are lactose intolerant, compared with 97% of people of Thai descent. When someone who is lactose intolerant ingests milk, the lactose accumulates in the lumen of the small intestine because there is no mechanism for uptake of the disaccharide....
41. The following sugar is also called frukt sugar A Glucose Maltese Lactose Section 11 Sucrose ) Fructose 42. The following ugaris Afructose Sucrose caled blood sugar Lactose Glucose E) Matose 43. Alactone is a cyclic Calcohol Detone Section 111 44. Refer to the above ructures the enantiomer of Duco A) D-Fructo -Gluco C L-Glucose Dj L-Idee Section 111 D-Galactose 45. Refer to the above structures. The diastereoisomers of Glucose indude all of these, except AD Galactose Glucose -dose D-Fructose...
CARBOHYDRATES POST-LAB QUESTIONS CONT'D 23.Draw the Haworth structure of lactose and explain why this disaccharide gives a positive Benedict's test; make sure to circle the part of the structure that is responsible for the reaction with Benedict's reagent. [5pts) Haworth Projection: (2.5 points) Hemiacetal circled / indicated (2.5 points) CARBOHYDRATES POST-LAB QUESTIONS CONT'D 24. When Benedict's reagent reacts with a reducing sugar, it oxidizes the aldehyde functional group to a carboxylic acid. As seen in the figure below: only a...