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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

Hemiacetal vs. Hemiketal

Biochemistry

9. Carbohydrates

Hemiacetal vs. Hemiketal

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Multiple Choice

In the reaction shown below the compound on the far right is a:

Acetal.

Alcohol.

Ether.

Ester.

Hemiacetal.

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Identify the functional groups involved in the reaction. The reactants are an aldehyde (RCHO) and an alcohol (HOR').

Examine the structure of the product formed. The product has a carbon atom bonded to an -OH group and an -OR' group.

Recall the definition of a hemiacetal. A hemiacetal is formed when an aldehyde reacts with an alcohol, resulting in a carbon atom bonded to both an -OH group and an -OR' group.

Compare the product structure to the definition of a hemiacetal. The product matches the structure of a hemiacetal, as it has a carbon bonded to both an -OH and an -OR' group.

Conclude that the compound on the far right is a hemiacetal based on the structural analysis and the definition of hemiacetals.