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

1. Introduction to Biochemistry

Carbohydrates

Biochemistry

1. Introduction to Biochemistry

Carbohydrates

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Multiple Choice

Which of the following expresses the correct chemical formula of a carbohydrate?

C₆H₁₄O₅

C₅H₁₀O₅

C₄H₁₀O₆

C₆H₁₂O₅

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Verified step by step guidance

Understand the general formula for carbohydrates, which is typically Cx(H2O)y. This implies that for every carbon atom, there is a corresponding water molecule, leading to a ratio of hydrogen to oxygen of 2:1.

Examine each given chemical formula to determine if it fits the general carbohydrate formula. Start with C6H14O5: count the number of hydrogen and oxygen atoms to see if the ratio is 2:1.

Next, analyze C5H10O5: check the hydrogen to oxygen ratio. With 10 hydrogens and 5 oxygens, the ratio is 2:1, which fits the carbohydrate formula.

Proceed to C4H10O6: count the hydrogen and oxygen atoms. The ratio here is not 2:1, indicating it does not fit the typical carbohydrate formula.

Finally, evaluate C6H12O5: count the hydrogen and oxygen atoms. The ratio is not 2:1, suggesting it does not conform to the carbohydrate formula. Conclude which formula fits the carbohydrate criteria based on the analysis.