Multiple Choice
In what polysaccharide form do plants store glucose to be available later as an energy source?
4. Biomolecules
Carbohydrates
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The polysaccharide that you are most likely to have eaten recently is __________.
A
chitin
B
glucose
C
lactose
D
ribose
E
starch
Verified step by step guidance1
Understand the concept of polysaccharides: Polysaccharides are large, complex carbohydrates composed of long chains of monosaccharide units. They serve various functions, such as energy storage and structural support.
Identify common dietary polysaccharides: In human diets, the most common polysaccharides are starch, cellulose, and glycogen. Starch is a major component of foods like potatoes, rice, and bread.
Differentiate between the options given: Chitin is a structural polysaccharide found in the exoskeletons of arthropods, not typically consumed in a regular diet. Glucose and ribose are monosaccharides, not polysaccharides. Lactose is a disaccharide, not a polysaccharide.
Recognize the role of starch in the diet: Starch is a polysaccharide that serves as a primary energy source in many diets. It is broken down into glucose during digestion, providing energy for the body.
Conclude that starch is the polysaccharide most likely consumed recently: Given its prevalence in common foods and its role as an energy source, starch is the correct answer to the question.
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