LIFE SCIENCE

Detailed explanation-1: -We can use a special reagent called Benedict’s solution to test for simple carbohydrates like glucose. Benedict’s solution is blue but, if simple carbohydrates are present, it will change colour – green/yellow if the amount is low and red if it is high.

Detailed explanation-2: -All reducing sugars can be detected by Benedict’s test. All monosaccharides are reducing sugars. Examples are lactose, maltose, glucose, fructose, galactose, ribose, and xylose.

Detailed explanation-3: -Lactose, D-ribose, and D-glyceraldehyde would give a positive Benedict’s test. To be a reducing sugar, a disaccharide must contain an anomeric carbon atom that can open up to form an aldehyde functional group, as shown in this disaccharide (answers will vary).

Detailed explanation-4: -Benedict’s reagent test or Benedict’s test is used to testing for simple carbohydrates / reducing sugars/ monosaccharides/ disaccharides.