Select the correct general formula for carbohydrates:
Correct answer: C. Cn(H2O)n
- A. C2nHnO2n
- B. Cn(H2O)2n
- C. Cn(H2O)n
- D. CnH3nO2n
- E. Hn(C2O)n
Explanation
The term carbohydrate means "hydrate of carbon." Many common carbohydrates have the empirical formula CH2O, which can be generalized to Cn(H2O)n. This formula shows that the ratio of hydrogen to oxygen atoms is 2:1, the same as in water.
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Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.
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