Which of the following is a carbohydrate monomer?

• A. Glucagon
• B. Glucose
• C. Glycogen
• D. Sucrose

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the concept of carbohydrate monomers. Carbohydrate monomers are the simplest units of carbohydrates, often referred to as monosaccharides. These are single sugar molecules that serve as building blocks for more complex carbohydrates.
2. Step 2: Review the options provided in the question. The options are: Glucagon, Glucose, Glycogen, and Sucrose.
3. Step 3: Analyze each option: - Glucagon is a peptide hormone, not a carbohydrate. - Glucose is a monosaccharide, a carbohydrate monomer. - Glycogen is a polysaccharide, a storage form of glucose, not a monomer. - Sucrose is a disaccharide, composed of two monosaccharides (glucose and fructose), not a monomer.
4. Step 4: Identify the correct answer based on the analysis. Glucose is the only option that fits the definition of a carbohydrate monomer.
5. Step 5: Conclude that glucose is the correct answer and explain why. Glucose is a monosaccharide, making it the simplest form of carbohydrate and the building block for more complex carbohydrates like glycogen and sucrose.