HUMAN NUTRITION

NUTRITION

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following difference between monosaccharides (MS) and polysaccharides (PS) is correct?
A
MS is insoluble but PS is soluble.
B
MS can diffuse into cells but PS cannot.
C
MS is compact but PS is not.
D
MS gives a blue coloration with Benedict’s test while PS gives brick-red precipitate.
Explanation: 

Detailed explanation-1: -Monosaccharides are simple sugar unit molecules, whereas polysaccharides are enormous, linking thousands of sugar units. Monosaccharides provide cells with short-term energy. Polysaccharides provide long-term energy storage and rigid structure to cell walls and exoskeletons of animals.

Detailed explanation-2: -Glucose, galactose and fructose are tranported out of the enterocyte through another hexose transporter (called GLUT-2) in the basolateral membrane. These monosaccharides then diffuse “down” a concentration gradient into capillary blood within the villus.

Detailed explanation-3: -A monosaccharide is a single simple sugar molecule, such as glucose. Monosaccharides serve as building blocks for more complex carbohydrates. Disaccharides are made up of two monosaccharides that have bonded together, and polysaccharides are made up of three or more monosaccharides bonded together.

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