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65 Cards in this Set
- Front
- Back
Carbs made up of
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C, H, O
Carbon Hydrogen Oxygen |
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3 types of carbs
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Monosaccharides
Disaccharides Polysaccharides |
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Monosaccharides (3 types)
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Glucose
Fructose Galactose ALL same # of atoms but diff. arrangement |
|
:
Glucose aka |
Aka blood sugar
• MAIN energy source |
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Fructose
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-The sweetest of sugars
-has diff. Structure |
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Galactose
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Happens naturally as simple sugar
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Disaccharides made by ______ of 2 monosaccharides
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By Condensation. : creation of Disaccharide.
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Disaccharides (3 types)
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Maltose
Sucrose Lactose |
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:
1: how is Maltose made |
Glucose + Glucose
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:
2. How is Sucrose made |
Fructose + glucose
(Table sugar) |
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:
3) How is Lactose made |
Galactose and Glucose
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Hydrolysis
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Break down of disaccharide
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Complex CHO (3 types)
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Glycogen
Starches Fiber |
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:
1.Glycogen |
Found only in meats and not all plants
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:
2. Starches -Come from? |
Long chain of molecules
Come from food : Grains Potato Legumes Corn |
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:
3. Fiber |
Found in all plant derived food
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::
Dietary fibers include (can be digested) |
Cellulose
Hemicellulose Pectins Guns Mucilages |
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::
Non polysaccharide include (CANNOT be digested) |
Lignins
Cutins Tannins |
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TYPES OF FIBER
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Solubles
Insoluble |
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Solubles
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I digested food component, dissolves in water
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:Solubles good includ
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Oat
Barley Legumes citrus Pectin from food |
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Benefits of soluble diber
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Lowers cholesterol and lower BG
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Insoluble
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Does not digest in water
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Insoluble fiber found in
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Whole grain (bran)
Veggies (corn celery) |
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Insoluble fiber helps with
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Bowel movement
-eliminates constipation |
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:
Resistant starch -what are some sources of ^^ |
Starches that escape digestion and absorption in the SI
-Sources: legumes, raw potatoes, in ripe bananas |
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:Phytic Acid
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Non nutrient component of plant seeds
-ex flax seeds |
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Benefits if Fiber
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HD: Heart Disease
-Solubles, lowers Chol DM: Diabetes -decrease glucose surge GI Health: -stool movement = no constipation CA: protects against Colon Cancer WT Control: feeling of fullness -fiber foods low in fat/less add sugars |
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Fiber recommendation of
DV: DRI: ADA: UL: Us Avg: |
DV:25 g
DRI:14g/100kcal ADA: 20-35g UL: 40g Us Avg: 15g KEY: ^^ slowly, add water |
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CHO DIGESTION: mouth
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Food seconds in mouth
Salivary glands produce saliva -Hydrolyzes starch to smaller polysaccharide and disaccharide |
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CHO DIGESTION: Stomach
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Stomach acid starts salivary amylase
-stops starch digestion |
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CHO DIGESTION:SI
Pancreas make- |
CHO Digestion occurs
-It makes pancreatic amylase released by pancreatic duct |
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Disaccharide enzymes breakdown to monosaccharides:
Maltase -> Sucrase -> Lactase -> |
Maltase -> GLU + GLU
Sucrase -> GLU + FRU Lactase -> GAL + GLU |
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CHO DIGESTION : LI
Time that all sugars and most starches are digested? |
Within 4 hrs
-Fiber stays in tract and attracts water It also binds with bile, CHOL and some minerals |
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Id not enoug glucose than body uses other sources. This is called_____
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Gluconeogenesis
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Protein sparing action =
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Action if CHO and fat to provide energy that allows PRO to be used for other sources
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Not enough carbs. _____will form from fat fragments
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Ketone bodies
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Ketosis=
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= High concentration of leone bodies in blood and urine
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Carbs needed for protein sparing and prevention of ketosis
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Minimum : 50-100 g/day
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Goal of blood glucose is
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Maintain homeostasis (happy level)
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:____ is key to let glucose enter into cells
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Insulin
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____ and _____ being glucose out of storage
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Glucagon and epinephrine
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Blood Glucose Hormones:
Insulin = Secreted by _____due to____ |
= Secreted by beta cells in pancreas due to High BG
ROLE : control transport of glucose |
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CHO DIGESTION : LI
Time that all sugars and most starches are digested? |
Within 4 hrs
-Fiber stays in tract and attracts water It also vida with bike, CHOL and sown minerals |
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::
Glucagon |
Made by beta cells in pancreas due to LOW BG
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:: Epinephrine
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Made by adrenal gland, starts stress
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Insuline is either inadequate (not enough) or defficient
Type 1 Diabetes-> Type 2-> |
Type 1-> not enough insoluble production
Type 2-> not responding to insulin |
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Hypoglycemia=
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Low BG
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Glycemic response
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How quick food will ^^ BG
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Effects of sugar
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Dental caries
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Recommended intake of Sugar:
DRI- WHO (world health Org.) & FAO- AHA (Ame. Heart. Asso.)- US now- |
DRI- nope than 25% days total energy
WHO (world health Org.) & FAO- < 10% of kcals AHA (Ame. Heart. Asso.)- 6 tsp women & 9 tsp men US now- 105 lbs added sugar/ yr or 30 tsp/day |
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Moving from digestion to absorption:
Most absorption happens in? And by which transport? |
In the SI
Active : glucose and galactose(needs carrier + energy) Facilitated: Fructose (needs carrier) |
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:: once absorbed, monosaccharides go to LV via?
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Via hepatic portal vein
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::
In liver galactose and fructose gets converted to? |
Glucose
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Lactose intolerance due to lack on?
% of ppl can digest lactose? |
Lactase (enzyme)
-30% |
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:: Symptoms of intolerance
-highest in what ppl? |
Bloating, diarrhea, abdominal discomfort
-Highest in SE Asians, Native Ame. African A. |
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:; Most people tolerate (amount)?
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6g of lactose = 1/2 cup
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:: Aware: ___% of prescription and over counter mess have lactose as filler
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20%
|
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Recommendation for Sugar:
DRI- WHO (world Healrh Org.) & FAO- AHA (Ame. Heart. Asso)- US now - |
DRI- no more than 25% of days total kcal
WHO (world Healrh Org.) & FAO- < 10% of kcal AHA (Ame. Heart. Asso)- 6 tsp women, 9 tsp men US now - 105 lbs added sugar per year OR 30 tsp a day |
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Alternative sweetener
Sugar alcohols/ Polyols= Side effects- |
Natural (fruits) or produced
-Not absorbed in mouth, not much in SI Side effects -gas, discomfort, laxative effect -no dental caries |
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Alternative sweeteners
|
-Artificial sweeteners (no nutrients)
-Stevia -herbal product |
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1 oz of grain = ____g of carbs
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15g
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Vegatavles
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Are starch content
|
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Fruits have what carbs?
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Fructose
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Meat and meat alternatives have_____carbs
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NO CARBS
B.c. Glycogen gets destroyed |