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Macronutrients
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Problema 1
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Problema 10
Macronutrients
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1. Science of Nutrition / Macronutrients / Problema 8
Problema 8
Which statement correctly describes the form in which macronutrient-derived monomers leave the digestive tract and enter the blood?
A
Carbohydrates are absorbed as simple sugars (e.g., glucose), fats primarily as free fatty acids and monoglycerides that are reassembled into lipoproteins for transport, and proteins as amino acids or small peptides.
B
Carbohydrates and proteins are absorbed as intact polysaccharides and polypeptides respectively, while fats are absorbed unchanged as triglyceride molecules directly into blood capillaries.
C
Proteins are absorbed primarily as whole enzymes, carbohydrates as starch particles, and fats are absorbed as glycerol only, which the liver then uses to make fatty acids de novo.
D
All macronutrients are absorbed unchanged into the lymphatic system where they are packaged into chylomicrons and travel exclusively via lymph before reaching the bloodstream.
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