MEDIUM
Diploma
IMPORTANT
Earn 100

Fructose is an isomer of glucose, but they differ with regard to one functional group and hence in their redox properties.Identify the functional group present in fructose, but not glucose.

Important Questions on Biochemistry

MEDIUM
Diploma
IMPORTANT
Fructose is an isomer of glucose, but they differ with regard to one functional group and hence in their redox properties. Identify the sugar that acts as a reducing agent.
MEDIUM
Diploma
IMPORTANT
Reducing carbohydrates such as glucose exist in solutions predominantly in their cyclic forms, which do not readily undergo oxidation. Draw the form of glucose that can be oxidized by copper(II) ions.
MEDIUM
Diploma
IMPORTANT
Reducing carbohydrates such as glucose exist in solutions predominantly in their cyclic forms, which do not readily undergo oxidation. State the name of the functional group that undergoes oxidation in glucose.
MEDIUM
Diploma
IMPORTANT
Reducing carbohydrates such as glucose exist in solutions predominantly in their cyclic forms, which do not readily undergo oxidation. Outline the two-step process that leads to the oxidation of the cyclic form of glucose.
MEDIUM
Diploma
IMPORTANT
State the name of one non-reducing sugar.
MEDIUM
Diploma
IMPORTANT

Lactulose is a synthetic, non-digestible disaccharide that is used in the treatment of chronic constipation and liver disease. This disaccharide contains the residues of galactose and fructose. The formula of α-lactulose is given below

Question Image

Identify the glycosidic link in lactulose by drawing a circle around it.

MEDIUM
Diploma
IMPORTANT

Lactulose is a synthetic, non-digestible disaccharide that is used in the treatment of chronic constipation and liver disease. This disaccharide contains the residues of galactose and fructose. The formula of α-lactulose is given below

Question Image

Suggest whether lactulose is a reducing or non-reducing sugar. Explain your answer.

MEDIUM
Diploma
IMPORTANT

In making candy or sugar syrup, sucrose is boiled in water with a small amount of organic acid, such as citric acid from lemon juice. Explain why the product mixture tastes sweeter than the initial sucrose solution.