Select the following which is hexoses:
Correct answer: D. Galactose
- A. Ribose
- B. Erythrose
- C. Glucoheptose
- D. Galactose
Explanation
The correct answer is Galactose. Galactose is a monosaccharide that contains six carbon atoms, classifying it as a hexose. It is often found in combination with glucose to form lactose, a disaccharide in milk. In contrast, Ribose is a five-carbon sugar (pentose), Erythrose is a four-carbon sugar (tetrose), and Glucoheptose is a seven-carbon sugar (heptose). Therefore, none of these are hexoses.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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