Multiple Choice
Which organisms use carbohydrates for structural functions in their cell walls?
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4. Biomolecules
Carbohydrates
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Which of the following correctly lists the three main types of carbohydrates found in food?
A
Glucose, fructose, and galactose
B
Monosaccharides, disaccharides, and polysaccharides
C
Sugars, proteins, and lipids
D
Starch, cellulose, and glycogen
Verified step by step guidance1
Step 1: Understand the question by identifying that it is asking for the three main types of carbohydrates found in food. Carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen, and they serve as a primary energy source for living organisms.
Step 2: Recall the classification of carbohydrates based on their structure and complexity. Carbohydrates are categorized into three main types: monosaccharides (simple sugars), disaccharides (two monosaccharides linked together), and polysaccharides (long chains of monosaccharides).
Step 3: Compare the options provided in the question. The first option lists specific examples of monosaccharides, the second option correctly identifies the three main types of carbohydrates, the third option includes macromolecules that are not carbohydrates, and the fourth option lists examples of polysaccharides.
Step 4: Recognize that the correct answer is the second option, as it accurately lists the three main types of carbohydrates: monosaccharides, disaccharides, and polysaccharides.
Step 5: To reinforce understanding, note that monosaccharides include glucose and fructose, disaccharides include sucrose and lactose, and polysaccharides include starch, cellulose, and glycogen. These examples help illustrate the classification of carbohydrates.
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