Podcast
Questions and Answers
What is the molecular formula of fructose?
What is the molecular formula of fructose?
- C6H14O6
- C6H10O5
- C6H12O6 (correct)
- C5H10O5
Which statement accurately describes the structure of alpha-D-(−)-fructofuranose?
Which statement accurately describes the structure of alpha-D-(−)-fructofuranose?
- It has six hydroxyl groups in the ring.
- The hydroxyl group on carbon 1 is positioned below the plane of the ring. (correct)
- It is a six-membered ring structure.
- The hydroxyl group on carbon 1 is positioned above the plane of the ring.
What type of functional group is present in fructose?
What type of functional group is present in fructose?
- Keto (correct)
- Aldehyde
- Carboxylic Acid
- Alcohol
In which type of natural sources is fructose commonly found?
In which type of natural sources is fructose commonly found?
How are the cyclic forms of fructose obtained?
How are the cyclic forms of fructose obtained?
Flashcards
Fructose's Formula
Fructose's Formula
The chemical formula for fructose is C6H12O6.
Fructose's Functional Group
Fructose's Functional Group
Fructose has a keto functional group.
Fructose's Cyclic Form
Fructose's Cyclic Form
Fructose exists in both furanose ring forms.
Fructose Anomers
Fructose Anomers
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Fructose Source
Fructose Source
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Study Notes
Fructose
- Fructose is a ketohexose, a monosaccharide found in sucrose, fruits, honey, and vegetables
- It's also used as a sweetener
- Molecular formula is C6H12O6
- Contains a keto group at carbon number 2 and 6 carbons in a straight chain
- Belongs to the D-series and is a levorotatory compound
- Represented as D-(−)-fructose
- Exists in two cyclic forms: furanose
- Furanose is a 5-membered ring formed by adding a hydroxyl group (-OH) at carbon 5 to the C=O group, analogous to furan (a 5-membered cyclic compound with one oxygen and four carbon atoms)
Fructose Structure
- Has two anomers (α and β)
- Haworth structures represent cyclic forms
- α-D-(−)-Fructofuranose and β-D-(−)-Fructofuranose are the two anomers.
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Description
This quiz covers the essential features of fructose, including its molecular structure, cyclic forms, and classification as a monosaccharide. Key concepts like the keto group, anomers, and Haworth structures are also explored.
