NFS 100 Lecture Notes - Lecture 7: Hemorrhoid, Maltase, Lactase
13 Oct 2016
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Document Summary
Carbohydrates: one of the three macronutrients, an important energy source, especially for nerve cells, composed of the atoms carbon, hydrogen, oxygen, good sources include fruits, vegetables, and grains. Glucose: the most abundant carbohydrate, produced by plants through photosynthesis, the preferred source of energy for the brain, an important source of energy for all cells. Monosaccharides contain only one molecule: example: glucose, fructose, galactose, ribose. Disaccharides contain two molecule: example: lactose, maltose, sucrose, linking monosaccharides together. Complex carbohydrates starch, glycogen, fiber: starch . Storage form of glucose in plants; found in grains, legumes, and tubers. Our cells cannot use complex starch molecules exactly as they occur in plants. We digest starch into glucose: glycogen . Storage for of glucose in animals; stored in liver and muscles. Not found in food and therefore not a dietary source of carbohydrates: fiber forms the support structures of leaves, stems, and plants.
