Mannose is the C-2 epimer of glucose. Altrose is the C-3 epimer of mannose. Which of the following is altrose? OH CH₂OH OH A - OH ОН CH₂OH OH В OH OH CH₂OH OH о О О OH OH OH CH₂OH OH D OH OH OH CH₂OH E О OH OH

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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**Question:**

Mannose is the C-2 epimer of glucose. Altrose is the C-3 epimer of mannose. Which of the following is altrose?

**Chemical Structure Options:**

1. **Structure A:** 
   - A six-membered ring with the following groups:
     - CH2OH at the top
     - OH on the right
     - OH on the bottom left
     - OH on the bottom

2. **Structure B:**
   - A six-membered ring with the following groups:
     - CH2OH at the top
     - OH on the top right
     - OH on the bottom left
     - OH on the bottom

3. **Structure C:**
   - A six-membered ring with the following groups:
     - CH2OH at the top
     - OH on the top right
     - OH at the center bottom
     - OH on the left

4. **Structure D:**
   - A six-membered ring with the following groups:
     - CH2OH at the top
     - OH on the right
     - OH at the bottom left
     - OH on the left

5. **Structure E:**
   - A six-membered ring with the following groups:
     - CH2OH at the top
     - OH on the top right
     - OH at the center bottom
     - OH on the bottom
     
**Answer Options:**

- ○ A
- ○ B
- ○ C
- ○ D
- ○ E
Transcribed Image Text:**Question:** Mannose is the C-2 epimer of glucose. Altrose is the C-3 epimer of mannose. Which of the following is altrose? **Chemical Structure Options:** 1. **Structure A:** - A six-membered ring with the following groups: - CH2OH at the top - OH on the right - OH on the bottom left - OH on the bottom 2. **Structure B:** - A six-membered ring with the following groups: - CH2OH at the top - OH on the top right - OH on the bottom left - OH on the bottom 3. **Structure C:** - A six-membered ring with the following groups: - CH2OH at the top - OH on the top right - OH at the center bottom - OH on the left 4. **Structure D:** - A six-membered ring with the following groups: - CH2OH at the top - OH on the right - OH at the bottom left - OH on the left 5. **Structure E:** - A six-membered ring with the following groups: - CH2OH at the top - OH on the top right - OH at the center bottom - OH on the bottom **Answer Options:** - ○ A - ○ B - ○ C - ○ D - ○ E
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