Multiple Choice
Which of the following lists includes all the sugars that can be absorbed in the human small intestine without further enzymatic digestion?
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1. Introduction to Biochemistry
Carbohydrates
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Which of the following best describes the basic building blocks of carbohydrates?
A
Monosaccharides such as glucose, fructose, and galactose
B
Amino acids such as glycine and alanine
C
Nucleotides such as adenine and guanine
D
Fatty acids and glycerol
Verified step by step guidance1
Understand the question: The problem is asking about the basic building blocks of carbohydrates, which are one of the four major macromolecules in biochemistry.
Recall the definition of carbohydrates: Carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen, typically in a ratio of 1:2:1. They serve as a primary energy source and structural components in living organisms.
Identify the building blocks: The basic building blocks of carbohydrates are monosaccharides, which are simple sugars. Examples include glucose, fructose, and galactose.
Eliminate incorrect options: Amino acids are the building blocks of proteins, nucleotides are the building blocks of nucleic acids, and fatty acids and glycerol are the building blocks of lipids. None of these are related to carbohydrates.
Conclude the correct answer: Monosaccharides such as glucose, fructose, and galactose are the correct building blocks of carbohydrates.
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