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

Cyclic Monosaccharides

Biochemistry

9. Carbohydrates

Cyclic Monosaccharides

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Multiple Choice

Which image represents the proper convention for carbon numbering of cyclic sugars?

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Identify the structure of the cyclic sugar in each image. These are pyranose forms, which are six-membered rings.

Understand the convention for numbering carbon atoms in cyclic sugars. The numbering starts at the anomeric carbon, which is the carbon attached to the oxygen in the ring and the hydroxyl group outside the ring.

In pyranose forms, the anomeric carbon is typically the carbon that was the carbonyl carbon in the linear form of the sugar.

Examine each image to determine which one starts numbering at the anomeric carbon. The correct image will have the number 1 at the anomeric carbon.

Verify that the numbering proceeds sequentially around the ring, ensuring that the highest numbered carbon is the one attached to the CH2OH group, which is typically the last carbon in the chain.