Which of the following is a reducing sugar? но но но но он HO "OH HO" "OH он но OH он но OH A D A В C B.

Chemistry
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Question:**  
Which of the following is a reducing sugar?

**Options:**

- **A:** Image of a monosaccharide structure featuring an aldehyde group (HO-CHOH-CHO-CHOH-CHOH-CH2OH).

- **B:** Image of a cyclic monosaccharide structure with an oxygen atom in the ring and hydroxyl groups attached.

- **C:** Image of another cyclic monosaccharide with an oxygen atom in the ring, similar to option B, but with a different arrangement of hydroxyl groups.

- **D:** Image of a different cyclic monosaccharide structure with an oxygen atom in the ring and a unique arrangement of hydroxyl groups compared to options B and C.

**Select the correct option:**

- ☐ A
- ☐ B
- ☐ C
- ☐ D

**Explanation:**  
To identify a reducing sugar, look for a free aldehyde group or a free ketone group. In cyclic forms, sugars with a free anomeric carbon (carbon connected to two oxygens, one in the ring and one in the hydroxyl group) that can open to form an aldehyde would qualify as reducing sugars.
Transcribed Image Text:**Question:** Which of the following is a reducing sugar? **Options:** - **A:** Image of a monosaccharide structure featuring an aldehyde group (HO-CHOH-CHO-CHOH-CHOH-CH2OH). - **B:** Image of a cyclic monosaccharide structure with an oxygen atom in the ring and hydroxyl groups attached. - **C:** Image of another cyclic monosaccharide with an oxygen atom in the ring, similar to option B, but with a different arrangement of hydroxyl groups. - **D:** Image of a different cyclic monosaccharide structure with an oxygen atom in the ring and a unique arrangement of hydroxyl groups compared to options B and C. **Select the correct option:** - ☐ A - ☐ B - ☐ C - ☐ D **Explanation:** To identify a reducing sugar, look for a free aldehyde group or a free ketone group. In cyclic forms, sugars with a free anomeric carbon (carbon connected to two oxygens, one in the ring and one in the hydroxyl group) that can open to form an aldehyde would qualify as reducing sugars.
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