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Nutrition Exam 2
Chapters 5 and 6 of Wardlaw's Perspectives in Nutrition 9th Ed.
39
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Undergraduate 3
10/06/2012

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Term
In what form are carbohydrates absorbed into the body?
Definition
Monosachardies
Term
The carb family includes
Definition
Sugars, straches, and fiber
Term
The general formula for carbohydrates is
Definition
CH2O or Cn(H2O)n based on number of times equation is repeated
Term
Formula for monosacharides
Definition
(CH2O)^6
Term
Formula for disarcharides
Definition
(CH2O)^12
Term
Polysaccharide
Definition
More complex forms of carbos (glycogen, starch, fiber, etc)
Term
Common monosaccharides
Definition
Glucose, fructose, and galactose
Term
Hexose
Definition
A six carbon sugar
Term
Glucose
Definition
Most abundant monosaccharide; a primary source of energy in the body
Term
What kind of sugar is also known as blood sugar?
Definition
Glucose
Term
Fructose
Definition
Monosaccharide with 6 carbons that forms a 5 or 6-membered ring with oxygen in the ring; found in fruits and honey
Term
Galactose
Definition
Monosaccharide found most abundantly in combo with glucose to make lactose
Term
Simple sugars derived from monosaccharides
Definition
Sorbitol, manitol, xylitol
Term
Condensation reaction
Definition
Linking of two monosaccharides
Term
Do monosaccharides get broken down further during digestion?
Definition
NO!
Term
Starch
Definition
complex carb made of multiple units of glucose attached together; digestible; amylopectin and amylose
Term
Amylose
Definition
digestible straight-chain type of starch made of multiple glucose units
Term
Amylopectin
Definition
Digestible branched-chain type of starch composed of multiple glucose units
Term
Glycogen
Definition
Carb made with multiple units of glucose with a highly branched structure; storage form of glucose in humans
Term
Where is glycogen synthesized
Definition
In liver and muscles
Term
Total fiber
Definition
Combo of dietary and funcitonal fiber in food
Term
Dietary fiber
Definition
Amount of fiber naturally in food
Term
Functional Fiber
Definition
Fiber added to food to provide health benefits
Term
Insoluble fiber
Definition
Fibers that are not easily dissolved in water or metabolized by bacteria in the large intestine; included in cellulose, some hemicelluloses, and lignins
Term
Soluble Fiber
Definition
Fibers that dissolve in water and can be metabolized (fermented) by bacteria in the large intestine; including pectin, gums, and mucilages
Term
Recomended daily intake of carbs
Definition
130 g/day; 45-65% of total calories
Term
Dietary guidelines suggest limiting sugar intake to less than
Definition
6%
Term
Types of insoluble fiber
Definition
Cellulose, hemicellulose, lignin,
Term
Why is fiber good for you
Definition
Prevents constipation, hemorrhoids, divericulitis, etc
Term
Diverticula
Definition
part of large intestinal wall pops out between surrounding band of muscle forming small pouches
Term
Fermentability
Definition
Bacteria in GI tract breaks down/digest some fiber producing gases and short chain fatty acids
Term
Fermentability
Definition
Bacteria in GI tract breaks down/digest some fiber producing gases and short chain fatty acids
Term
Sugar alcohols are derivatives of
Definition
monosaccharides
Term
Besides glucose, fructose, and galactose, two other kinds of monosaccharides that are important to human existance are
Definition
Ribose and deoxyribose
Term
Examples of digestible polysaccharides
Definition
Starch and glycogen
Term
Dietary and functional fibers are
Definition
indigestible polysaccharides
Term
Two types of sweetners are
Definition
Nutritive sweetners-provide energy
Non-nutritive (alternative) sweetners
Term
How are monosaccharides absorbed/transported?
Definition
Through a portal vein to the liver
Term
How is glucose transported?
Definition
Through the bloodstream for use by the cells of the body
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