This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification of carbohydrate, Subject name: Biochemistry
Parent alcohol in carbohydrates is : 
Select and explain. 
A. Glycerol, B. Ethanol, C. Methanol, D. Cholesterol
A: Glycerol
Answer: A: Glycerol 
Explanation: Parent alcohol in carbohydrates is Glycerol. Parent carbohydrate, which gives rise to all other carbohydrates. Eg D-Glyceraldehyde. Most abundant organic molecule in nature: Carbohydrates Most abundant monosaccharide in nature: D-Glucose Minimum number of carbons possible in a Carbohydrate is 3. Minimum number of 'OH' group possible in a Carbohydrate is 2. Minimum number of functional groups possible in a Carbohydrate is 1.