Multiple Choice
Carbohydrates may form larger carbon-based macromolecules by combining with which of the following elements?
16
views
1. Introduction to Biochemistry
Carbohydrates
Struggling with Biochemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following lists includes all the sugars that can be absorbed in the human small intestine without further enzymatic digestion?
A
Sucrose, lactose, and maltose
B
Glucose, fructose, and galactose
C
Fructose, maltose, and galactose
D
Glucose, sucrose, and lactose
Verified step by step guidance1
Understand the problem: The question is asking which sugars can be absorbed directly in the human small intestine without requiring further enzymatic digestion. This requires knowledge of carbohydrate digestion and absorption in biochemistry.
Recall the key concept: Only monosaccharides (single sugar units) can be absorbed directly in the small intestine. Disaccharides (e.g., sucrose, lactose, maltose) must first be broken down into monosaccharides by specific enzymes.
Identify the monosaccharides: The three main monosaccharides that can be absorbed directly are glucose, fructose, and galactose. These do not require further enzymatic digestion.
Eliminate incorrect options: Disaccharides like sucrose, lactose, and maltose cannot be absorbed directly because they need to be hydrolyzed into their monosaccharide components by enzymes such as sucrase, lactase, and maltase.
Select the correct answer: The list that includes all the sugars that can be absorbed without further enzymatic digestion is 'Glucose, fructose, and galactose.'
Related Videos
Related Practice
