Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

9. Carbohydrates

Mutarotation

Biochemistry

9. Carbohydrates

Mutarotation

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Multiple Choice

Which of the following forms of glucose or its derivatives is capable of undergoing mutarotation?

D-glucose (in aqueous solution)

D-glucose-6-phosphate

Methyl-b-D-glucopyranoside

D-gluconic acid

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Verified step by step guidance

Understand the concept of mutarotation: Mutarotation is the process by which the alpha and beta anomers of a cyclic sugar interconvert in aqueous solution. This requires the sugar to have a free hydroxyl group on the anomeric carbon, allowing the ring to open and close.

Analyze D-glucose (in aqueous solution): D-glucose has a free hydroxyl group on its anomeric carbon, enabling the ring to open and close, thus allowing mutarotation.

Examine D-glucose-6-phosphate: The phosphate group is attached to the sixth carbon, not the anomeric carbon. The anomeric carbon still has a free hydroxyl group, so mutarotation can occur.

Evaluate Methyl-β-D-glucopyranoside: In this derivative, the anomeric hydroxyl group is replaced by a methyl group, preventing the ring from opening. Therefore, mutarotation cannot occur.

Consider D-gluconic acid: D-gluconic acid is an oxidized form of glucose where the aldehyde group at the anomeric carbon is converted to a carboxylic acid. This modification prevents the ring from opening, so mutarotation cannot occur.