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Man's Food Exam 2
study guide questions
156
Biology
Undergraduate 2
03/17/2010

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Term
3 essential fatty acids
Definition

Linoleic

linolenic

arachidonic

Term
Triglyceride is made up of?
Definition
A glycerol and 3 fatty acids
Term
How much cholesterol does our body synthesize?
Definition
~1000-1500 mg/day
Term
4 functions of cholesterol in the body?
Definition

Nerve coatings

precursor for Vitamin D

bile salt formation

cell membrane integrity

Term
Fatty acid are different primarily because of two factors
Definition

chain length

degree of saturation

Term
For Saturated fats as _____ increases, ______ increases
Definition

chain length

melting point

Term
For unsaturated fats as _____ increase, _____ decreases.
Definition

double bonds

melting point

Term
Saturated fatty acid
Definition
Molecule is completely surrounded or saturated with hydrogen
Term
Polyunsaturated fatty acid
Definition
Molecule has gaps and double bonds in certain regions of the fat
Term
Animal fats are ____ at room temperature
Definition
solid
Term
Vegetable fats are ____ at room temperature
Definition
liquid
Term
Hydrogenation
Definition
The conversion of unsaturated fatty acid to saturated fatty acid
Term
5 functions dietary fats are involved in
Definition

Energy (9 kcal/gm)

Essential fatty acids

Source of fat soluble vitamins

Protection

Palatability

Term
4 types of lipoprotein found in body
Definition

chylomicron

VLDL (very low density lipoprotien

LDL (low density lipoprotein)

HDL (high ensity lipoprotein)

Term
Which lipoprotein is responsible for transporting fat from intestine to liver?
Definition
Chylomicron via lymphatic system
Term
Which lipoproteins are responsible for transporting fat to the cells?
Definition

VLDL

LDL

HDL

Term
Which lipoprotein is thought to protect you from cholesterol damage and atherosclerosis?
Definition
HDL
Term
Cellulite
Definition
visible hardened fat deposits
Term
Tissue where fat is deposited and how many Kcals of energy there are per pound of this tissue
Definition
Adipose tissue at ~3500 kcal
Term
How does ketosis result?
Definition
Incomplete oxidation of fatty acids resulting in production of ketone bodies
Term
3 states of ketosis
Definition

Untreated diabetes

low carbohydrate diets (Atkins diet)

fasting

Term
ketone bodies produced during ketosis
Definition

Acetoacetic acid

betahydroxy butyric acid

acetone

Term
Acetone
Definition
Found in "sweet" breath
Term
Plaque formation is the pathological characteristic for?
Definition

Atherosclerosis

Coronary Heart Disease (CHD)

Term
Heart attack
Definition
results when an artery is clogged to the heart
Term
Stroke
Definition
results when an artery is clogged to the brain
Term
Gangrene
Definition
results when an artery is clogged to the limb
Term
Aneurysm
Definition
results when an artery is clogged to the blood vessel
Term
3 risk factors that the Framingham study shows concerning coronary heart disease
Definition

Smoking

Cholesterol

High Blood Pressure

 

Note: Over 32 risk factors have been described for this disease

Term
The level of cholesterol above which the risk of coronary heart disease increases?
Definition
200 mg%
Term
4 factors of "Prudent Diet"
Definition

reduce caloric intake

limit dietary cholesterol to 300 mg/day

reduce total fat intake

substitute polyunsat. for sat. fat where possible

Term
Who formed the U.S. Dietary Goals?
Definition
George McGovern set up a US Senate Committee in the mid 70s
Term
 In terms of Kcals, what was the US senate committee's recommendation for the ratio of Kcal's coming from fat, protein, and carbohydrates?
Definition

fat=30%

protein=10%

carbs=60%

Term
USDA Dietary guidelines for Americans
Definition

*eat a variety of foods*

*maintain ideal weight*

avoid too much fat, sat. fat, and cholesterol

eat food w/ adequate starch and fiber

*avoid too much sugar*

avoid too much sodium

*if you drink alcohol, do so in moderation*

Term
Eskimos
Definition

high fat diet

low heart disease

Term
Japanese
Definition

rice consumption↓

meat↑

milk↑

life expectancy↑

Term
Organs that aid in digestion and transport
Definition

Mouth

Esophagus

Stomach

Small intestine

Pancreas

Liver

Gall bladder

Large intestine

Term
Salivary amylase
Definition
enzyme in saliva that helps breakdown carbohydrate
Term
Bolus
Definition
Food swallowed at one time
Term
Peristalsis
Definition

       two sets of muscles (longitudinal and circular) work opposite each other to move food down the esophagus or small intestine.

when circular muscles tighten a bulge forms and when the longitudinal muscles tighten the bolus moves down the lumen.

Term
Sphincter valves
Definition
muscles that close to keep food contained within the stomach
Term
Cardiac valve
Definition
valve at the beginning of the stomach
Term
Pyloric valve
Definition
valve at the end of the stomach
Term
3 muscles that make up the stomach
Definition
outer - longitudinal
middle - circular
inner - diagonal
Term
Hydrolysis reaction
Definition

using water to break the bond.

major reaction of digestion, breaking down proteins, fats and carbohydrates to their simplest form.

Term
Function of the glycoprotein that is produced in the stomach
Definition
protects vitamin B12
Term
Enzyme that is important in the digestion of food in the stomach?
Definition
pepsin which breaks down protein
Term
pH of stomach
Definition
~2
Term
HCl
Definition
secreted in stomach to achieve pH~2
Term
Pancreatic amylase
Definition

enzyme responsible for breaking down carbohydrate

Term
Protease
Definition

enzyme responsible for breaking down proteins

Term
Lipase
Definition

enzyme responsible for breaking down lipids (in SI)

 

Term
Sodium bicarbonate
Definition
secreted into the small intestine to help adjust the pH to neutrality
Term
Bile
Definition

secreted from the gall bladder

emulsifies the fat for digestion

Term
Advantages of the large intestine
Definition

thriving population of bacteria help to reduce infectious bacteria

produce some vitamins
colon reabsorbs most of the water and salts

Term
Villi
Definition
finger-like projections of the small intestine
Term
Advantage of villi
Definition
increase the surface area of the small intestine making it a more efficient process of digesting and utilizing the smaller units of protein, fat and carbohydrate
Term
2 systems in the body where the villi are found and help to transport nutrients throughout the body?
Definition

blood system

lymphatic system

Term
Diffusion
Definition
free movement of nutrients in and out of the cell
Term
Facilitated diffusion
Definition
requires a carrier or shuttle to move nutrients across the cell membrane
Term
Active transport
Definition
pumps nutrients across the cell membrane by using a carrier and energy 
Term
2 systems that regulate digestion, absorption and transport
Definition

Nervous system

Endocrine system

Term
Gastrin
Definition
hormone that stops the flow of acid to the stomach
Term
Secretin
Definition
hormone that signals the pancreas to produce bicarbonate
Term
Cholecystokinin (CCK)
Definition
hormone that is used to signal the gall bladder to secrete bile
Term
Gastric-Inhibitory Peptide & CCK
Definition
hormone that slows gastrointestinal tract motility because fat needs more time to digest
Term
Vitamin
Definition
organic compounds necessary for growth and maintenance
Term
Different forms of vitamins that exist in foods
Definition

natural vitamin

vitamin precursor

Term
Vitamin antagonist/antivitamin
Definition
chemicals that hinder vitamin uptake and utilization
Term
Primary deficiency
Definition
nutrient lacking in the diet
Term
Secondary deficiency
Definition

nutrient present in diet but unable to utilize it

(vitamin antagonist)

Term
Difference between natural and synthetic vitamins?
Definition

no difference

a chemical is a chemical

Term
Carotenoids
Definition
precursor for vitamin A
Term
important functions for Vitamin A
Definition

rhodopsin (night vision)

epithelial integrity (moisture)

Term
2 vitamin A deficiencies
Definition

Night blindness

Xerophthalmia (drying of epithelial linings)

Term
At what concentration is vitamin A toxic?
Definition
3x RDA
Term
2 precursors for vitamin D
Definition

Calciferols

7-dehydrocholesterol

Term
2 functions of vitamin D
Definition

promotes Ca utilization and uptake

strong bones and teeth

Term
Vitamin D deficiencies
Definition

Juvenile - Rickets

Adult - Osteomalacia

Elderly - Osteoperosis

Term
At what concentration is Vitamin D toxic?
Definition
4x RDA
Term
Precursor for vitamin E
Definition
Tocopherols
Term
2 vitamin E functions
Definition

biological antioxidant

blood forming

Term
2 vitamin E deficiencies
Definition

Hemolytic anemia

antisterility factor in rats

Term
At what concentration is vitamin E toxic?
Definition

None

easily broken down to tocopheronic acid

Term
Menadione
Definition

vitamin K precursor

not true precursor- pseudoprecursor

Term
Function for Vitamin K
Definition
blood clotting
Term
Vitamin K deficiency
Definition
excessive bleeding
Term
At what concentration is vitamin K toxic?
Definition
Not toxic
Term
Water soluble vitamins are _____ in a total enzyme system
Definition
coenzymes
Term
Terms in a total enzyme system?
Definition

coenzymes - water soluble vitamins

apoenzyme - protein

cofactor - mineral

Term
2 vitamin C functions
Definition

synthesis of collagen - cements cells together

water soluble antioxidant 

Term
Scurvy
Definition
vitamin C deficiency
Term
Scurvy symptoms
Definition

follicular keratosis

bleeding gums

receding gums

teeth fall out

wounds open

Term
5 animals that require vitamin C
Definition

humans

anthropoid apes

fruit-eating bats

guinea pigs

red-vented bul bul bird

Term
At what concentrations does the body become saturated with Vitamin C?
Definition
200 mg/day
Term
Dr. Linus Pauling
Definition
responsible for large doses of Vitamin C curing the cold and preventing cancer
Term
Thiamin
Definition
vitamin B1
Term
Vitamin B1 functions
Definition

helps convert CHOs to energy

helps nerve cell function

Term
Vitamin B1 deficiency
Definition
Beri Beri="I can't, I can't"
Term
Beri Beri symptoms
Definition

wet=edema

dry=emaciation, muscle wasting

Term
Riboflavin
Definition
Vitamin B2
Term
Vitamin B2 functions
Definition
helps convert CHOs and protein to energy
Term
Vitamin B2 deficiency
Definition
Ariboflavinosis
Term
Vitamin B3 deficiency symptoms
Definition

dermatitis - skin rash

diarrhea - malabsorption

dementia - loss of faculties

death

Term
3 M diet of B3 deficiency in US south
Definition

maize (corn)

meat (salt pork)

molasses

Term
Symptoms of B2 deficiency
Definition

magenta tongue

seborrhea=oily secretion from skin

cheliosis=cracked mouth

conjunctivitis=red eyes

lacrimation=teary eyes

Term
Vitamin B3
Definition
niacin
Term
Function of B3
Definition
helps metabolize protein, fat, CHOs, alcohol
Term
Vitamin B3 deficiency
Definition
pellegra
Term
Enrichment
Definition
add
Term
Restoration
Definition
replace
Term
Fortification
Definition
add more than occurs naturally
Term
Nutrification
Definition
general term for adding nutrients
Term
5 nutrients described by federal enrichment program
Definition

thiamin

riboflavin

niacin

iron

folate - added recently

Term
Vitamin B6
Definition

pyridoxine

pyridoxal

pyridoxamine

Term
Vitamin B6 functions
Definition

needed for protein interconversion (metabolism)

"heme" (iron)

Term
B6 deficiency symptoms
Definition

adults=anemia, dermatitis, convulsions

infants=nerve disorders, GI distress

Term
B6 antagonist
Definition
deoxypyridoxine
Term
Pantothenic acid function
Definition

release of energy from CHOs

fat metabolism

steroid hormone synthesis

Term
Pantothenate deficiency symptoms
Definition
not recgnized in humans
Term
Pantothenic acid antagonist
Definition
omega-methyl pantothenate
Term
Biotin function
Definition
activates enzymes involved in CO2 metabolism
Term
Biotin deficiency symptoms
Definition

loss of appetite

nausea

vomiting

inflammation of tongue

pallor

depression

hair loss

skin problems

Term
Biotin antagonist
Definition
avidin in raw egg whites
Term
Folic acid function
Definition
involved in red blood cell production
Term
Folic acid deficiency symptoms
Definition

cracked lips/mouth corners

anema

malabsorption

infertility

Term
Folic acid antagonist
Definition
aminopterin
Term
Cobalamin
Definition
Vitamin B12
Term
Orange juice is a good source of?
Definition
folic acid
Term
Vitamin B12 functions
Definition

aids in red blood cell development

nerve cells

fat metabolism

Term
B12 deficiency symptoms
Definition

weakness

sore tongue

anemia

psychiatric

Term
B12 antagonist
Definition
none
Term
B12 extrinsic factor
Definition
vitamin B12 in food
Term
B12 intrinsic factor
Definition
produced in stomach
Term
Mineral
Definition
inorganic chemicals necessary in the diet for growth and maintenance
Term
3 terms to describe minerals
Definition

electrolytes

salts

trace nutrients

Term
General functions of minerals
Definition

building blocks - teeth and bones

soft tissue

compounds essential to the body

body regulations

Term
Sodium functions
Definition

osmotic pressure

acid-base balance

membrane function

Term
Sodium deficiency causes
Definition

excessive sweating

vomiting

urination

Term
Excessive sodium intake can lead to ________ which causes an increased risk for _________
Definition

hypertension

atherosclerosis - CHD

Term
Gatorade
Definition

bottled sweat:

water

potassium

sodium

glucose

flavors, etc

Term
Potassium functions
Definition

osmotic pressure

acid-base balance

intracellular mineral

Term
Signs of Potassium deficiency
Definition

musclular weakness

intestinal distention

abnormal heatbeat

respiratory failure

Term
Calcium functions
Definition

bones and teeth

muscle contraction

blood clotting

nerve excitability

Term
Signs of calcium deficiency
Definition

hyperexcitable nerves (tetany)

bleeding

rickets/osteomalacia/osteoporosis

Term
4 diseases from excessive calcium
Definition

kidney stones

gall stones

tarter on teeth

plaque formation in arteries

Term
2 compounds affect Calcium utilization
Definition

vitamin D

oxalic acid/oxalates

Term
Phosphorus functions
Definition

bones and teeth

cellular energy as ATP

Term
Phosphorus deficiency
Definition
weak bones
Term
Iron functions
Definition

a part of the molecule's hemoglobin and myoglobin

carries oxygen via red blood cells

Term
Signs of iron deficiency
Definition

microcytic anemia (iron deficiency anemia)

characterized by small pale red blood cells

Term
3 factors that affect iron utilization
Definition

titamin C promotes Fe utilization by converting Fe3+ to Fe2+

Fe2+ (ferrous) form is better utilized

phytic acid/phytates prevent Fe from being utilized

Term
Iodine functions
Definition

part of thyroxine which is found in the thyroid gland

responsible for the entire body's metabolic rate control

Term
Iodine deficiency signs
Definition

goiter (enlarged thryoid gland)

mental impairment

mental retardation (especially if pregnant while in goiter)

Term
Fluoride functions
Definition

hardens bones (teeth)

prevents tooth decay

Term
Fluoride deficiency signs
Definition

mottled teeth (staining)

tooth decay

organ damage

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