Common Monosaccharides

Q. Which amongst the following is a reducing sugar?

1. Galactose
2. Sucrose
3. Cellulose
4. Glycogen

Q.

Why are glucose, fructose and galactose known as isomers?

1. They all have the same optical property

2. They have the same structural and chemical formula

3. They vary in the arrangement of asymmetric carbons

4. They vary in the arrangement of functional groups around the asymmetric carbons

Q. Which of the following is a ketose sugar?

1. Fructose
2. Glucose
3. Galactose
4. None of the above

Q.

Write short notes on disaccharides.

Q. Which one of the following is a disaccharide?

1. Maltose
2. Ribose
3. Glucose
4. Fructose

Q. Fructose and glucose can be distinguished by:

1. Benedict’s reagent
2. Seliwanoff’s reagent
3. Fehling’s reagent
4. Barfoed’s reagent

Q.

How can Carbohydrates be classified based on the number of carbohydrate units?

Q.

The bond formed between glucose and galactose monosaccharides to produce the disaccharide lactose, is _____.

1. $\alpha$-1, 2- glycosidic bond

2. $\beta$-1, 4- glycosidic bond

3. $\alpha$-1, 4- glycosidic bond

4. $\beta$-1, 2- glycosidic bond

Q. Which of the following is an example of monosaccharide?

1. Galactose
2. Sucrose
3. Lactose
4. Maltose

Q. Which of the following is an aldose sugar?

1. Glucose
2. Erythrulose
3. Ribulose
4. Fructose

Q. On hydrolysis, the nucleoside does not yield:

1. Purine
2. Pyrimidine
3. Pentose sugar
4. Phosphoric acid

Q. how many positional isomers are possible for 1, 2 , 3 trimethyl benzen

Q.

Glucose and fructose are examples of _______.

Q. Which of the following is a keto sugar?

1. Glucose
2. Glyceraldehyde
3. Ribose
4. Fructose

Q.

The difference between alpha and beta forms of pyranose ring is that

1. The oxygen atoms are more in alpha form

2. They are mirror images of each other

3. In the β form, the OH group in the 1 position (the far right) is down, and, in the α form, the OH group in the 1 position (the far right) is up.

4. In the α form, the OH group in the 1 position (the far right) is down, and, in the β form, the OH group in the 1 position (the far right) is up.

Q.

Name of the monomers of starch.

Q. Which of the following is considered the sweetest of all naturally occuring sugars?

1. Fructose
2. Lactose
3. Ribose
4. Maltose

Q. Discuss the role of the hepatopancreatic complex in the digestion of carbohydrate, protein and fat components of food.

Q. Which of the following is a keto sugar?

1. Glucose
2. Glyceraldehyde
3. Ribose
4. Fructose

Q. Which of the following terms is/are used to describe glucose?

1. Grape sugar
2. Dextrose
3. Blood sugar
4. All of these

Q. Maltose is a reducing sugar, whereas sucrose is a non-reducing sugar.

1. True
2. False

Q. Which amongst the following is a reducing sugar?

1. Sucrose
2. Glycogen
3. Galactose
4. Cellulose

Q. Which of the following is fruit sugar?

1. Lactose
2. Fructose
3. Maltose
4. Deoxyribose

Q. Which of the following terms is/are used to describe glucose?

1. Grape sugar
2. Dextrose
3. Blood sugar
4. All of these

Q.

Why are glucose, fructose and galactose known as isomers?

1. They all have the same optical property

2. They have the same structural and chemical formula

3. They vary in the arrangement of asymmetric carbons

4. They have the same chemical formula, but vary in the arrangement of atoms in the molecule

Q. Sweetest sugar is

1. Fructose
2. Mannose
3. Lactose
4. Glucose

Q.

Most of the energy required by the human body comes from:

1. proteins

2. glycogen storage

3. breakdown of lipids

4. breakdown of starch to glucose

Q. The structure of glucose and galactose are same except with regard to

1. First carbon atom
2. Second carbon atom
3. Third carbon atom
4. Fourth carbon atom

Q. Which of the following is an example of monosaccharide?

1. Galactose
2. Sucrose
3. Lactose
4. Maltose

Q. Differentiate between aldose and ketose sugars