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General Nutrition Chapter 4
Chapter Powerpoint Review
40
Biology
Undergraduate 1
10/09/2013

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Term
Salivary Amylase Digests What?
Definition
Salivary Amylase digets carbohydrates in the mouth, and is deactivated by HCL in the stomach. (Hydrochloric Acid)
Term
What are the three macronutrients?
Definition
Protein, Fat, Carbohydrates
Term
What is the preferred source of energy for nerve cells and blood cells?
Definition
Carbohydrates
Term
What is carbohydrate's molecular composition? (just the elements)
Definition
carbon,hydrogen, oxygen
Term
Simple carbohydrates contain only one or two molecules. What are all of these monosaccharides' names?
Definition
Glucose, Fructose, Galactose
Term
Disaccharides contain two molecules. What are their names?
Definition
Lactose, Maltose, Sucrose
Term
Galactose + Glucose makes?
Definition
Dairy / Milk sugars
Term
Glucose + Glucose makes?
Definition
Starch
Term
Glucose + fructose
makes?
Definition
Sucrose
Term
in a complex carb of oligosaccharide, how many monosaccharides are inside?
Definition
3-10 monosaccharides
Term
polysaccharrides contains how many glucose molecules?
Definition
hundreds to thousands!
Term
Complex carbohydrates include:
Definition
Oligosaccharides, Polysaccharides, Starch Glycogen, and fiber.
Term
Amylopectin forms WHAT KIND OF PROTEIN CHAIN?
Definition
A BRANCHING ONE! Amylose has a STRAIGHT protein chain! She said this would be on the test!
Term
Plants store carbs as starch. Amylose is what?
Definition
A straight chain of glucose.
Term
Amylopectin is what?
Definition
a branched chain of glucose.
Term
Resistant starch(fiber) is what?
Definition
glucose molecules linked by beta bonds that are largely undigestible. Sources: grains, legumes, fruits, vegetables
Term
Glycogen:
Definition
storage form of glucose for animals and humans, not found in food. stored in LIVER AND MUSCLES.
Term
Fiber is composed of LONG POLYSACCHARIDE CHAINS. Dietary fibers are non-digestible parts of plants. Functional fibers are WHAT?
Definition
Non-digestible forms of carbohydrates that are manufactured
Term
Where does the digestion of carbohydrates take place EXCLUDING the mouth?
Definition
small intestine. the pancreas excretes PANCREATIC AMYLASE to convert it to MALTOSE in the SMALL INTESTINE.
Term
Maltase, Sucrase, and Lactase are what?
Definition
They are enzymes that digest maltose, sucrose, and lactose into monosaccharides. (BECAUSE THEY ARE COMPLEX CARBOHYDRATES AND NEED TO BE BROKEN DOWN!)
Term
Excess glucose is stored where and in what form?
Definition
It is stored by our liver and muscles as GLYCOGEN!
Term
Insulin is excreted where and by what?
Definition
BY THE BETA CELLS IN THE PANCREAS!
Term
What is secreted by alpha cells of the pancreas?
Definition
GLUCAGON!
Term
Glucagon does what?
Definition
Stimulates Gluconeogenesis, the production of glucose from amino acids (YOUR OWN AMINO ACIDS! YIKES)
Term
Epinephrine and Norepinephrine do what?
Definition
They increase glycogen breakdown in the liver, releasing glucose into the blood. They are responsible for our fight-or-flight reactions to danger.
Term
Where are epinephrin and norepinephrine created?
Definition
ADRENAL AND NERVE ( REMEMBER - FIGHT OR FLIGHT REACTIONS! EPINEPHRINE AND NOREPINEPHRIN!
Term
Cortisol and GROWTH HORMONE do what?
Definition
Cortisol increases gluconeogensis(breakdown of amino acids for glucose) and decreases muscle glucose use. GROWTH HORMONE decreases muscle glucose uptake, increases fatty acid mobilization and use, and increases liver glucose output.
Term
Glycemic Index is what?
Definition
A food's potential to raise blood glucose. (A food with a HIGH glycemic index cause a sudden surge in blood glucose, triggering a large increase in inulsin, which may be followed by a dramatic fall in blood glucose. Food with LOW INDEX cause low to moderate fluctuations in blood glucose.)
Term
What is glycemic load?
Definition
It's used to determine the effect of a food on a person's glucose response. Grams of carbs in a meal are multiplied by glycemic index.
Term
What is the value of having a lower glycemic Index?
Definition
LESS fluctuations in blood glucose. Risk reduction for heart diseases and colon cancer. High fiber intake helps to improve fat levels in the blood. (HIGHER HDL AND LOWER LDL). foods with lower glycemic index: Beans, fresh vegetables, whole wheat.
Term
List the caloric data for each:
Protein;
fat;
Carbohydrates;
Definition
fat:9kcal, protein:4kcal, carb:4kcal
Term
The role of carbohydrates is what?
Definition
Red blood cells can only use carbs. Both carbs and fats supply energy for daily activities. Glucose is especially important for energy DURING EXCERCISE.
Term
Fat breakdown during FASTING forms ketones. Excess ketones causes what?
Definition
keoacidosis. (if you have enough carbs it will prevent this!!!)
Term
Gluconeogenesis OCCURS WHEN?
Definition
When a diet is deficient in carbohydrates! The body makes it's own glucose from protein. Because guess what? YOUR BLOOD NEEDS IT, YOUR NERVES NEED IT, AND YOUR *BRAIN* NEEDS IT. YOU *NEED* CARBS AND WILL DO WHATEVER IT TAKES TO KEEP THE LIGHTS ON!
Term
Can amino acids that are produced from gluconeogenesis be used for new cells, repair tissue damage, support the immune system, or perform any of the other functions?
Definition
No. They are useless. Your body ate the proteins to get carbs to fuel your RED BLOOD CELLS, AND NERVES! You would die without carbs, but not without eating your own proteins (to keep the lights on) first.
Term
Hyperglycemic is high blood glucose. What is it caused by?
Definition
Lack of insulin in the blood will result in the glucose accumulating, because the insulin is vital to the transmission of glucose to wanting muscles and areas.
Term
Reactive Hypoglycemia?
Definition
Pancreas secretes TOO MUCH INSULIN, after a high-carbohydrate meal.
Term
Fasting hypoglycemia: ?
Definition
Pancreas produces too much insulin, even when someone has not eaten.
Term
3 parts of the small intestine?
Definition
duodenum, jejunum, ileum
Term
5 myplate food groups
Definition
vegetables, protein, dairy, fruits, grains
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