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Monosaccharides : Definition and Examples MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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13 Questions around this concept.
Solve by difficulty
The glycosidic bond is not seen in
The carbon of -COR is numbered as
The structure of glucose would show which of the following at C-1?
Which group consists of only hexose sugars?
Which sugars are hexose and aldose both?
Grape sugar is ________
Monosaccharides are
Which of the following groups of monosaccharides are consumed primarily in the body?
Which of the following sugars have the same number of carbon as present in glucose?
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Enrol NowMonosaccharide units present in Lactulose are___?
Concepts Covered - 1
Monosaccharides
Monosaccharides
- These are the simple sugars that cannot be broken down through the hydrolysis reaction.
- They do not have any covalent bond.
- These are the monomers that would condense via the glycosidic bond (a type of covalent bond) to form polymers of carbohydrates.
- They are represented by the formula (CH2O)n.
- The smallest molecules usually considered to be monosaccharides are those with n = 3.
- Monosaccharides can be categorized according to their value of 'n' as shown below:
| n | Category |
| 3 |
Triose |
| 4 |
Tetrose |
| 5 |
Pentose |
| 6 |
Hexose |
| 7 |
Heptose |
| 8 |
Octose |
- Monosaccharides are also classified on the basis of the carbonyl - aldehyde (-CHO) or ketose (-COR) group.
- Glyceraldehyde is a triose with an aldehyde group.
- Dihydroxyacetone is a triose with a ketose group.
- Glucose is a hexose with an aldehyde group.
- Fructose is a hexose with a ketone group.
Classification of Monosaccharides according to the number of carbon in the
skeleton and type of carbonyl group
TIP: Carbons in a monosaccharide are numbered such that the aldehyde group is carbon number one or the ketone group is carbon number two.
Some examples of monosaccharides:
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