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Protein
na
22
Biology
Undergraduate 2
12/09/2012

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Term
AA are used for:
Definition
protein synthesis and synthesis of nonprotein molecules
Term
protein turnover=
Definition
cycle of protein synthesis and protein breakdown
Not all AA are recovered, some are lost
Term
Amino Acid pool
Definition
AA available for protein synthesis
Term
if 250g of protein come from AA pool, but we synthesis 300g of protein a day, where does the extra 50g come from?
Definition
diet
Term
req how much protein/kg of body weight
Definition
.8g
Term
When is additional protein needed?
Definition
during periods of growth and repair
athletes, pregnat/lactacting, infants, period of recovery from illness and surgery
Term
rec. protein for athletes?
Definition
1.2-1.7g/ kg bw needed to maintain and build mass/strength
Term
Timing of protein
Definition
is important
immediately after exercise
Term
Which protein sources are most anabolic?
Definition
high quality (all essential AA)
milk, whey, soy, egg
Term
when protein is in excess what happens? How?
Definition
synthesize nonprotein molecules (glucose and FA)
Via deamination
Term
deamination-
Definition
removal of amino group Nitrogen containing amino group
Term
-- containing amino group is converted to -- in --, then converted to --, which is released into--.
Definition
Nitrogen
ammonia
liver
urea
blood
Term
-- provides for a useful clinical indicator of liver and kidney function
Definition
nitrogen
Term
elevated levels of ammonia in blood indicate
Definition
impaired liver funct
Term
elevated levels of urea in blood (BUN) indicate
Definition
impaired kidney function
Term
does the RDA for protein differentiate between animal and plant sources of protein?
Definition
NO
Term
Complete protein
Definition
provides all essential AA in req amounts
meat fish eggs
Term
incomplete protein
Definition
lacking or has significantly low amounts of one or more essentail aa
grains, legumes, nuts
Term
if a variety of incomplete sources are consumeed collectively - which is called --
Definition
they provide a complete source of protein
protein complmentation
Term
When amount and varitey of food is limited -- becomes a problem
Definition
protein energy malnutrition (PEM)
Term
Where is PEM common
disorders-
Definition
developing nations
marasmus
kwashiokor
Term
Marasmus-
kwashiokor-
cause:
Definition
protein energy deficient
protein deficiency
impair immunity, hair loss, muscle wasting, distended ab (for kwashiokor- cause is edema&large liver)
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