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Nutrition Exam Chapter 7,10,11
Chapter 7, 10, 11
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Undergraduate 1
03/31/2012

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Term

What are the different forms of energy?

 

Definition

Heat

Mechanical 

electrical

chemical

 

Term

What is metabolism?

 

Definition
How body obtains and uses energy from food
Term
What is catabolism?
Definition
Releases Energy, Breaks things down like Larger molecules into smaller molecules
Term
What is anabolism?
Definition
Requires energy, joins smaller molecules to make bigger molecules
Term
What is ATP?
Definition
Transfer of energy in reactions. This is released during breakdpwn of glucose, fatty acids, and amino acits.
Term
What is a coupled reaction?
Definition

Energy released from catabolism and used in anabolism. 

Chemical reaction with a common intermediate in which energy is transferred from one side of the reaction to the other. An example is the formation of ATP which is an endergonic process and is coupled to the dissipation of a proton gradient

 

Term
What is an enzyme?
Definition
facilitators of metabolic reactions
Term
What is a coenzyme?
Definition
Associates with enzymes. Without coenzyme, an enzyme cannot function. Organic
Term
What is cellular respiration?
Definition
Break down of glucose into energy.
Term
What happens in glycolosis?
Definition

Glucose becomes two pyruvate acids 

Happens in the cytopasm of the cell. 

Four ATP's are made and two are used up, making it a net gain of two ATP.

Two NADH

Anaerobic

Term
How many ATPs are made from on NADH from One FADH2?
Definition
2
Term
What happens in the transition reaction of cellular respiration?
Definition
Pyruvate becomes acetyle CoA.
Pyruvates have two options: Quick energy needs (anaerobic): pyruvate to lactate
Slower energy needs (aerobic)- pyruvate to acetyl CoA
Term
What happens in the Krebs Cycle?
Definition
Term
How many total ATP's produced from one glucose molecule?
Definition

38

net gain is 36

Term
What is fermentation?
Definition
Term
What is fermentation?
Definition
Anaerobic
Term
What is the end product of fermentation?
Definition
Lactic Acid in the muscles
Term
What is the process called from glucose to pyruvate?
Definition
Glycolosis
Term
Can glycolosis be reversed ?
Definition
yes
Term
Can pyruvate to acetyl CoA be reversed?
Definition
No
Term
Before an amino acid can be used for energy, What has to happen to it?
Definition
deamination, the amino group needs to be pulled away also the hydrogen and ammonia is produced and the ammonia then turned into urea by the liver. The kidneys get rid of the urea. (7:00)
Term
When you are fasting how is your blood glucose maintained?
Definition
It takes the stored glycogen from the liver which can last for half a day. And then when its done it goes to the proteins and its amino acids that turned into glucose. proteins from the muscle.
Term
what is gluconeogenisis?
Definition
when protein starts to break down to get glucose.
Term
What is produced as a result of fat breakdown to glucose?
Definition
ketons
Term
What are the ketones used for?
Definition
used by all of the body cells for energy. the brains can use it but parts of the brain have to have glucose. Thats when you go into ketosis.
Term
Who does alcohol benefit?
Definition
people the ages 35 and above
Term
How much alcohol does one drink contain?
Definition
1/2 ounces of pure ethanol
Term
How can you slow down alcohol absorption?
Definition
by drinking slowly, one drink an hour.
Term
What can you eat to slow down alcohol absorption?
Definition
high carb snacks and high fat snacks.
Term
What are the two enzymes involved in alcohol digestion?
Definition
ADH (alcohol dehydrogenase) and Acetadehyde
Term
What is MEOS?
Definition
Microsomal ethanol-oxidizing system
Term
What does MEOS do?
Definition
System of enzymes that not only breaks down alcohol but also breaks down drugs. (breaks down drugs and alcohol.) Its effective in people that consume alcohol regularly. If you drink once in a while then you have the alcohol dehydralase.
Term
What blood alcohol level is considered intoxicated?
Definition
.08%
Term
How many calories does alcohol provide?
Definition
7 kcalories per gram
Term
What is the name of the deficiency disease that is frequently seen in alcoholics?
Definition
Verniki Kersoscoff syndrome
Term
Which B vitamin is Verniki kersoscoff deficiency of?
Definition
thaimin (vitamin B1)
Term
How many drinks are females recommended per day?
Definition
one
Term
How many drinks are recommended for males per day?
Definition
2
Term
What are the water soluble vitamins?
Definition
B and C
Term
What is a precursor or pro vitamin?
Definition
something that is converted to the vitamins (active form) in the body.
Term
What do the B vitamins function as?
Definition
coenzyme(Enzyme helper)
Term
What is thiamin's (B1) coenzyme?
Definition
TPP (Thiamin pyrophosphate)
Term
How much thiamin is recommended per day?
Definition
1.2mg males
1.1mg female
Term
What is the name of the deficiency disease caused by the lack of thiamin?
Definition
BeriBeri (for alcohols its verniki corscoff syndrom)
Term
What is the best food source for thaimin?
Definition
pork, acorn, squash, fortified foods, enriched foods.
Term
What is B2?
Definition
Riboflavin
Term
What are the two coenzymes of riboflavin?
Definition
FMN (flavin mononucleotide) and FAD (flavin adenine dinucleotide)
Term
What are the recommendation of riboflavin per day?
Definition
1.3mg for males
1.1mg for females
Term
What is the deficiency of riboflavin called?
Definition
ariboflavinosis
Term
What are the symptoms of ariboflavinosis?
Definition
inflammation, angular stomachitis, kelosis, glocytis
Term
Best source of riboflavin?
Definition
milk
Term
What destroys riboflavin?
Definition
light
Term
What is the third B vitamin?
Definition
Niacin
Term
What are the two coenzymes of Niacin?
Definition
NAD (Nicotinaminde adenine dinucleotide) and NADP ( the phosphate form)
Term
What are the recommendation of niacin?
Definition
16 NE/Day Male
14 NE/Day Female
NE( Niacin Equivalent)
Term
Can the body make niacin? If so by what?
Definition
Yes, Tryptophan
Term
How much tryptophan would you need to make one milligram of niacin?
Definition
60 mg= 1 niacin
Term
What is the recommendation of niacin per day?
Definition
16 mg males
14 mg females
Term
What is the deficiency of Niacin?
Definition
Pellagra which is dry skin
It was in southern US when people ate alot of corn
Term
What are the symptoms of pellagra?
Definition
Four D's: Diarrhea, Demotysis, Demulation, death
Term
What is the niacin flush?
Definition
Whe you take large doses of niacin and is used medically because it is believed to dilate your blood vessels.
Term
Which food contains a substance that breaks food and prevents the absorption of biotin?
Definition
raw eggs whites (egg whites not the yoke) it contains abatin
Term
What is the adequate intake of Biotin?
Definition
30 micrograms a day
Term
Which vitamin is a part of coenzyme A?
Definition
pantothenic acid
Term
what is the adequate intake for pantothenic acid?
Definition
5 milligrams per day
Term
What are the coenzyme form of B6?
Definition
PLP which is important in amino acid and protein metabolism which is stored exclusively in muscle tissues
Term
What are the three forms of B6?
Definition
pyridoxal, pyridoxine, pyridoxamine
Term
What is the recommendation of B6?
Definition
1.3mg per day
Term
What are antagonist(destroys) of B6?
Definition
Alcohol and isoniazid (medications to treat TB)
Term
What does large doses of B6 do?
Definition
degenerations of the nerves
Term
What are the names of folate?
Definition
folacin or folic acid or pteryolglutanic acid
Term
What is the coenzyme of folate?
Definition
THF (tetrahydrofolate)
Term
What is folate usually attached to in foods?
Definition
polyglutamate (27:00) In the large intestin, difestion breaks the glutamates off leaving the folate bound to one glutamate (monoglutamate) and folate is absorbed and delivered to cells.
Term
How is folate activated?
Definition
B12 which is irreversible
Term
What are the recommendations of folate?
Definition
400 micrograms a day
Term
What is bioavalability synthetic folate?
Definition
getting folate from pills. and it is 1.7 times more available than food folate
Term
What is folate need for?
Definition
to prevent neural tube defect in pregnant women
Term
What is the neural tube defect?
Definition
causes spinal bifita and anbefany (lack of brain development)
Term
Why should you not take large doses of folate?
Definition
because it will mask the presence of B12 definency
Term
What type of anemia does the deficiency of folate and B12 cause?
Definition
macrocitic anemia (red blood cells are huge) or megaloblastic anemia
Term
What kinds of food are rich in folate?
Definition
green leafy vetatables
Term
What is another name of B12?
Definition
Thianocobalami
Term
What is made in the stomach to bind B12?
Definition
Intrinsic factor (its genetic and some people dont have this which means they wont have B12 in their body)
Term
Where does the absorption of B12 happen?
Definition
small intestine and intrinsic factor is excreted
Term
What is the recommendation of B12?
Definition
2.4 micrograms a day
Term
What is the anemia caused by B12 deficiency?
Definition
pernicious anemia
Term
What is B12 found in?
Definition
exclusively in animal foods so vegans have to have supplements
Term
What does vitamin C do?
Definition
its an antioxidant and enhances iron absorption
Term
Whats another name for vitamin C?
Definition
ascarbic acid
Term
How much vitamin C would you need to prevent overt symptoms of scurvy?
Definition
10 mgs a day.
Smokers would need 35 more mg extra
Male 95 mg, Female 75 Mg)
Term
What are the signs of vitamin C deficiency?
Definition
bleeding gum, capillaries under the skin break, red spots on your skin (pin point hemorrhage)
Term
What is vitamin c deficiency called?
Definition
Scurvy
Term
What are the best sources of vitamin c?
Definition
fruits and vegetables especially citric fruits
Term
What are the fat solubles of vitamins?
Definition
A D E and K
Term
What happens to the fat soluble vitamins if you take too much?
Definition
its is stored in the liver and adipose tissues
Term
What is the precursor of Vitamin A?
Definition
Beta carotene
Term
What are the three form of Vitamin A?
Definition
retinol, retinal and retinoic acid
Term
Where do you find beta carotene?
Definition
plant foods , egg yoke has some too
Term
what is retinol?
Definition
supports productions, major transport and storage form
Term
What is retinal?
Definition
active in vision
Term
What is retinoic acid?
Definition
regulates cell differentiation, growth and embryonic development, protein synthasis
Term
What vitamin A are irreversibile?
Definition
retinol and retinal
Term
What is the first sign/symptom of vitamin A deficiency?
Definition
night blindness
Term
What does vitamin A deficiency cause?
Definition
all the cells get keratin
Term
What is keratin
Definition
hard, inflexible protein of hair and nails (keratinization)
Term
What can happen if you consume alo of beta carotene?
Definition
skin turns yellow also antioxidant becomes a pro-oxidant and produces free radicals
Term
What are the recommendations of vitamin A?
Definition
900 micrograms males RAE
700 micrograms females RAE
Term
One RAE is how many micrograms of retinol?
Definition
1 (REA= retinal activity equivalent)
or 12 micrograms beta carotene
Term
How many international units of retinal is one RAE?
Definition
3.33
Term
Vitamin D is from?
Definition
exposer to sunlight
Term
What are the two organs that activate vitamin D?
Definition
liver and kidneys
Term
What is the precursor of vitamin D?
Definition
7 dehydrocholesterol (made in the liver from cholesterol)
Term
How is the Vitamin D converted?
Definition
In the skin the 7 dehydrocholesterol becomes previtamin D3 when your get ultraviolet light from the sun. The pre vitamin becomes vitamin D3 then hydroxylation. In the Liver its becomes calcidiol and then in the kidneys it becomes calcitriol.
Term
What is the main role of Vitamin D?
Definition
maintain blood calcium levels its raises. prevents the loss of calcium, increases the absorptions of calcium (48:00)
Term
What is the vitamin D deficiency called?
Definition
rickets (in children) and osteomalacia (adults rickets)
Term
What happens if you have too much vitamin D?
Definition
Stones in the Kidney called nephrocalcinosis
Term
What are some good food sources of vitamin D?
Definition
oily fish, egg yoke, fortified milk
Term
What is the recommendations of vitamin D?
Definition
15 micrograms a day, 10 to 20 min sun exposure per day
Term
What does vitamin E belong to?
Definition
a group of compounds called tocopherol
Term
What are the four different tocopherol compounds?
Definition
alpha, beta, gamma, delta
Term
Which tocopherol is the most efficient in the body?
Definition
alpha tocopherol
Term
What is the function of vitamin E?
Definition
Antioxidant and and protects the LDL from oxidation (loosing electrons to free radicals.) This forms plaque in your body.
Term
What type of anemia does vitamin E deficiency cause?
Definition
erythrocyte, hemolytic anemia (red blood cells with split open and spill its contents because the lipids are oxidized)
Term
What is the recommendation of Vitamin E?
Definition
15 mg a day
Term
Which vitamin is made in the body?
Definition
Vitamin K in the GI
Term
what is vitamin K need for?
Definition
essential for blood clotting
Term
How is vitamin K essential for blood clotting?
Definition
Its needed for the liver to make a protein called protrombin
Term
What are the recommendation of vitamin K?
Definition
120 micrograms males
90 micrograms females
Term
What are the food sources of Vitamin K?
Definition
vegetable oils and green vegetables
Term
What is a free radical?
Definition
something that has one or more unpaired electron.
Term
What do antioxidants do?
Definition
provide electron that free radical is looking for so that the free radical does not steal any electrons from important molecules in the body (DNA, RNA, Protein)
Term
What are the three important antioxidant vitamins?
Definition
Vitamin C, E, and beta carotene
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