Carbohydrate Study Questions

Carbohydrate Study Questions - Carbohydrate (CHO) Study...

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Carbohydrate (CHO) Study Questions What is the general formula for CHO? The general formula for CHO is CnH2nOn where n is any number greater than 6. What process produces CHO? What are the starting materials? CHO is produced by photosynthesis: CO2 + H2O + sunlight C6H12O6+O2 In what foods do CHO occur? Grains, beans, legumes, roots, tubers, starchy vegetables, pasta, noodles, bread, oatmeal, rice, grits, fruits, candies, baked goods. Classification Based on number of subunits What is a simple sugar? Sugars are made of a ring of five or six carbon atoms, sometimes with two rings linked together. . In nature, sugars occur mostly in fruits with lesser amount in vegetables. What is a complex carbohydrate? Complex carbohydrates or starches are chains of thousands of these simple sugars. Complex carbohydrates occur in grains, beans and legumes, roots, tubers, and starch vegetables. What is a monosaccharide? A monosaccharide is a simple sugar consisting of a single ring structure and six carbon atoms. Glucose (dextrose) What is the shape of a glucose molecule? How many carbon atoms does it contain? Glucose is a six-sided ring with an oxygen atom at one apex, with the sixth carbon and other oxygens outside the ring. Where is it found? Glucose tastes sweet, and is found in fruits, honey, and sweet corn, and in the bloodstream.
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Fructose What is the shape of a fructose molecule? How many carbon atoms does it contain? Fructose also contains six carbon atoms arranged in a ring, in this case a five-sided ring, with an oxygen atom at one apex. Fructose has two carbons and the remaining oxygen outside the ring. Where is it found? Fructose is very sweet and is found in fruit, honey and as part of the double sugar, sucrose. Disaccharides What is a disaccharide? A disaccharide is a simple sugar composed of two monosaccharides joined together. What monosaccharides is sucrose made from? Where is it found? Sucrose is made by joining one molecule of glucose and one molecule of fructose. Most of the sucrose we use comes from sugar cane and sugar beets, but it also occurs in fruit, honey, and maple syrup. What monosaccharides is maltose made from? Where is it found? How is it made? Maltose is made up of two glucose molecules. It is usually formed when plants break down starch during sprouting or when we break down starch during digestion. Maltose is found in barley malt syrup, which helps keep baked goods moist. What monosaccharides is lactose made from? Where is it produced? In what foods is it found? Lactose contains a glucose molecule and a galactose molecule. The mammary glands of lactating mammals produce lactose and it is found inbreast-milk and dairy products. Polysaccharides Starches What subunits are starches made from? How big are they?
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Starches are made up of glucose molecules joined by chemical bonds into very long strands. Starches range from as few as 900 glucose units to 3 of 4 thousand glucose units. Where are they found?
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Carbohydrate Study Questions - Carbohydrate (CHO) Study...

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