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Nutrition
Carbohydrates
114
Health Care
Undergraduate 2
02/22/2008

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Cards

Term
sugar
Definition

a simple carb.

primary is sucrose(made out of glucose and fructose)

CH20

ring in solution

 

Term
glycogen
Definition

a carb made of multiple units of glucose

highly branched structure

aka; animal starch 

storage form of glucose

stored in liver and muscles 

Term
where is glycogen stored?
Definition
liver and muscles
Term
what has the chemical composition, ch20?
Definition
sugar
Term
what is the primary form of sugar?
Definition
sucrose
Term
what form does sugar take in solution?
Definition
ring
Term
what is sucrose made up of?
Definition
glucose and fructose
Term
starch
Definition

a carb made of multiple units of glucose

attached in form body can digest

complex carb. 

Term
fiber
Definition

substances in plant food that are not digested by the processes that take place in stomach and small intestines

add bulk to feces

those found naturally in foods: dietary fiber 

Term
photosynthesis
Definition

process by which plants use energy from sun to sythesize energy-yielding compds such as glucose

formula: 

six co2 plus six h20 yields glucose(c6h1206) plus six o2 

Term
monosaccaride
Definition

simple sugar units(mono means one) that serve as the basic unit of all sugar structures

 

ex: glucose fructose and galactose 

 

Term
glucose
Definition

major monosaccaride found in the body

aka: dextrose

six carbon(c6h1206)

found in blood and table sugar(in which its bonded to fructose)

 

Term
what is glucose also known as?
Definition
dextrose
Term
what is another name for glucose in the blood stream?
Definition
blood sugar
Term
where is glucose found?
Definition
in blood and in table sugar(bonded to fructose)
Term

glucose comes from which of the following?

starches,

fructose,

table sugar(sucrose) 

Definition
starches and sucrose
Term

what is the purpose of glucose

 

Definition
serves as a source of fuel for the cells
Term
fructose
Definition

six carbon monosaccaride that usually exists in a ring form; found in fruits and honey; fruit sugar

 

Term
what is fructose also known as?
Definition

fruit sugar

because it is found in fruits and honey 

Term
what type of sugar is fructose? simple or complex?
Definition
simple
Term
where is fructose absorbed in teh body?
Definition
small intestine
Term
where is the fructose in our body metabolized?
Definition
liver
Term
what monosaccaride is fructose mostly converted into?
Definition
glucose
Term
where does most of the fructose in our diets come from?
Definition

use of high fructose corn syrup 

Term
galactose
Definition
six carbon monosaccaride that usualy exists in a ring form-closely related to glucose
Term
do large quantities of galatose exist in nature?
Definition
n0
Term
where is galactose found? in what form?
Definition

bonded to glucose in lactose(disaccaride)

 

Term
what is done with galactose after it is absorbed?
Definition
it is either transformed into glucose or further metabolized into glycogen
Term
disaccharide
Definition

sucrose, lactose, and maltose

formed when two monosaccharides combine

all of them contain glucose 

Term
maltose
Definition

glucose bonded to glucose

results when starch is broken down to just two glucose molecules bonded together

role in beer and liquior industry

 

Term
fermentation
Definition
the conversion of carbs to alcohols, acids, and carbon dioxide without the use of o2
Term
are monosaccharides and disaccharides simple or complex sugars??
Definition
simple
Term
why are monosaccharides and disaccharides referred to as simple sugars?
Definition
they contain only one or two sugar units
Term
single sugar units are bonded together to form a chain which is known as...

Definition
polysaccharides!
Term
what is another name for polysaccharides
Definition
complex carbs
Term
what is another name for polysaccharides besides complex carbs?
Definition
starch
Term
how many glucose units do complex carbs contain?
Definition
can contain 1000 or more glucose units
Term
where are polysaccharides chiefly found?
Definition
grains, vegetables, and fruits
Term
what are the forms that plants store carbohydrates in?(digestable to humans?)
Definition
amylose and amylopectin
Term
amylose
Definition
a long straight chain of glucose units, comprises about 20% of the digestible starch found in beggies, beans, breads, pastas, and rice
Term
amylopectin
Definition

highly branched; provides many ends in enzyme action and is therefore more easily digested than amylose

 

Term
what carbohydrate has even more branching sites/enzyme ends than amylopectin?
Definition
glycogen
Term
why is glycogen ideal for carb. storage in the body?
Definition
it is very easily broken down since it has such a branched structure
Term
which raises blood sugar quicker? amylose or amylopectin?
Definition
amylopectin because it has so many more branches/enzyme sites, it therefore breaks down faster(and raises teh blood sugar quicker)
Term
glycogen major storage site?
Definition
liver and muscles
Term
how many kcal of glucose are readily available in body fluids?- other body locations?(muscles and liver)
Definition

120

 1800

Term
can muscle glycogen be used for blood glucose, and raise it?
Definition
nope, just for muscle use and especially during high-intensity and endurance exercise
Term
if animals store glycogen in their muscles, are meats, fish and poultry a good source of carbs?
Definition
no, animal products are not good food sources of their or any other carb because glycogen stores deplete quickly after animal dies
Term
what is fiber made up mostly of?
Definition
polysaccharides
Term
how does fiber differ from starches?
Definition
chemical inks that join the individual sugar units cannot be digested by human enzymes in gi tract
Term
does the small intestine absorb sugars of fiber?
Definition
no
Term
is fiber a single substance?
Definition
no, it is a group of substances with similar characteristics
Term
what carbohydrates form fiber?
Definition
cellulose, hemicelluloses, pectins, gums, and mucilages as well as noncarbohydrate, lignin
Term
what are all the nonstarch polysaccharides?
Definition
all the fibers!  sooo cellulose, hemicelluloses, pectins, gums, and mucilages as well as noncarb. lignin
Term
does a nutrition label list all the individual forms of fiber?
Definition
nope, just a whole value
Term
what is the term for all the fiber in one's diet lumped together?
Definition
dietary fiber-combination of celluloses, hemicelluloses, pectins, gums, mucilages, and lignin
Term
what fiber polysaccharides form the structural parts of plants?
Definition
cellulose, hemicelluloses and lignin
Term
what are the woody fibers in broccoli made out of?
Definition
lignin, which is actually not a carbohydrate but IS a nonstarch fiber
Term
what is a good source of fiber?
Definition
whole grains(bran layers form the outer covering of all grains)
Term
bran fiber is rich in what two nonstarch polysaccharides(fibers)
Definition
hemicelluloses and lignin
Term
what are fibers that form structural parts of plants(hemicelluloses, celluloses, and lignin) called because they are not readily dissolved by intestinal bacteria?
Definition
insoluble or poorly fermented fibers
Term
where are pectins, gums, and mucilages contained?
Definition
around and inside plant cells
Term
what do the fibers found around and inside plant cells(pectins, mucilages, and gums) do in water?
Definition
swell or dissolve and are therefore termed soluble
Term
are soluble fibers(pectins, gums, and mucilages), fermented by bacteria in large intestine?
Definition
yes
Term
where are soluble fibers such as(pectins, mucilages, and gums) found?
Definition

in salad dressings, frozen desserts, jams, and jellies

some forms of hemicelluloses actually fall into this category as well 

Term
do food labels generally distinguish between the types of fiber?
Definition
no
Term
what is a functional fiber?
Definition
a form of fiber that may be added to foods
Term
does the current nutrition label reflect how much fiber is "functional fiber"?
Definition
nope, just total fiber
Term
what are the foods that yield the highest percentage of calories from carbs?
Definition

table sugar, hoiney, jam, jelly, fruit, and plain baked potatoes

richest sources of carbs, carbs deliver most of their calories

 

Term
corn, flakes, rice, bread, and noodles all contain at least what percentage of calories as carbs?
Definition
seventy five
Term
peas, broccoli, oatmeal, dry beans, and other legumes, cream pies, frenchfries and fat free milk contain what amount of carbs
Definition

moderate amount of carbs. 

the carb content is diluted by protein, or fat 

Term
what are foods with nearly no carbs?
Definition
beef, eggs, chicken, fish, veggie oils, and butter/margarine
Term

is the percentage of calories from carbs more important than the total amount of carbs in a food when planning a healthy high-carb. diet?

pecentage of calories carbs of higher importance than amount of carbs? 

Definition

yes

percentage of calories carbs of higher importance than amount carbs 

Term
what foods should be emphasized in a high carb diet?
Definition
grains, pasta, fruits and veggies
Term
can you create a diet high in carbs by using potato chips, chocolate and french fries?
Definition
no because their percentage of fat is high
Term
what ar teh top five carb. sources for u.s. adults?
Definition

white bread, soft drinks, cookies and cakes, sugars/syrups/jams, potatoes

 

SHOULD INCLUDE, whole grains, fruits, and vegetables 

Term
what are two categories of sweeteners?
Definition
nutritive and alternative
Term
are alternative or nutritive sweeteners sweeter?
Definition
alternative are sweeter on a per-gram basis
Term
do sugars and sugar alcohols provide calories?
Definition
yes
Term
do sugar alcohols or sugars have more limited uses?
Definition
sugar alcohol
Term
nutritive sweeteners
Definition
all of the monosaccharides(glucose fructose and galactose)
Term
where is sucrose obtained from?
Definition
sugar cane and sugar beet plants
Term
what sweetener are all other sweeteners measured against?
Definition
sucrose!
Term
what types 'sugar' is used in the food industry a LOT today?
Definition
high fructose corn syrup
Term
how is high-fructose corn syrup made?
Definition
by treating cornstarch with acid and enzymes
Term
what does the process of treating cornstarch with acids and enzymes do to it to make it into high-fructose corn syrup?
Definition

it breaks down much of the starch into glucose-some of the glucose is converted by enzymes into fructose

usually as sweet as sucrose 

Term
what is the major advantage of high fructose corn syrup?
Definition
it is CHEAPER than sucrose
Term
what are some additional advantages, besides cost, of high fructose corn syrup?
Definition
it doesn't form crystals and has better freezing properties
Term
fact: borwn sugar, turbinado sug, honey, maple syrup, and other sugars are also added to foods
Definition
Term
turbinado sugar
Definition
partially refined version of raw sucrose, slight molasses flavor
Term
brown sugar
Definition
essentially sucrose containing some molasses
Term

maple syrup made?

what is most pancake syrup? 

Definition

by boiling down and concentrating sap

primarily corn syrup and high fructose corn syrup 

Term
honey?
Definition

a product of plant nectar that has been altered by bee enzymes

break down sucrose into fructose and glucose

offers some nutritional value as other simple sugars

 

Term
why is honey not safe to feed to infants
Definition

it can contain sporers of clostridium botulinum

cause foodborne illness

does not cause same problem in adults because of the more acidic environment 

Term
Type one diabetes
Definition
form of diabetes prone to ketosis-requires insulin therapy
Term
type 2 diabetes
Definition

ketosis is not commonly seen

insulin therapy can be used but is often not required

often associated with obesity 

Term
traditional symptoms of diabetes
Definition
frequent thirst, hunger, urination
Term
type two diabetes-insulin dependent?
Definition
non insulent dependent
Term
type one diabetes
Definition

insulin dependent

immune system attack of pancreas:cause 

Term
gestational diabetes
Definition

diabetes in pregnancy, treated with insulin regimen and diet resolves after baby delivery

at risk for developing type 2 diabetes later in life 

Term
reactive hypoglycemia
Definition

low blood glucose that follows a meal high in simple sugars, with corresponding symptoms of irratibility, headache, nervousness, sweating, and confusion

postprandial hypoglycemia 

Term
fasting hypoglycemia
Definition
low blood glucose that follows about a day of fasting
Term
diverticula
Definition
pouches that protrude through the exterioir wall of large intestine
Term
hemorroid
Definition
a pronounced swelling of a large vein, particularly veings found in the anal region
Term
diverticulosis
Definition
the condition of having many diverticula in the large intestine
Term
diverticulitis
Definition
an inflammation of the diverticula caused by acids produced by bacterial metabolism inside the diverticula
Term
carbs provide glucose for needs of ------
Definition
RBC and parts of brain and nervous system
Term
low glucose supply in cells can result in...
Definition
ineffective metabolism of fat, and ketosis
Term
what is ketosis
Definition
the condition of having a high concentration of ketone bodies and releated breakdown products in bloodstream and tissues
Term
ketone bodies
Definition
products of incomplete breakdown of fat containing three or four carbons
Term
explain why ketosis is bad
Definition

it results from inefficient metabolism of fat, which means that a diet is not proper(usually not enough carbs)

fats dont break down completely and instead form ketone bodies-disturs doy's normal acid-base balance and leads to other health issues

 

Term
hyperclycemia
Definition

high blood glucose-125 mg per 100 ml 

Term
hypoglycemia
Definition
40-50mg glucose for 100 ml blood
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