Chapter 6: Protein Flashcards

1
Q

how are proteins differentiated

A

side chain / r group

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2
Q

what is the structure of amino acids

A

amino group, carboxyl group, carbon, r group

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3
Q

pathway of making a protein

A

-dna
-rna
-cytoplasm
-trna
-ribosome
-amino acid
-

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3
Q

most simple amino acid (glycine) r group

A

H

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4
Q

how are proteins bonded

A

dehydration synthesis

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5
Q

example of a small protein

A

insulin

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6
Q

what is unique in the make up of proteins from the other macros

A

nitrogen

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7
Q

how many amino acids are essential

A

9/20

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8
Q

what does essential mean

A

you cannot synthesize it, you must get it from your diet

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9
Q

why does protein get digested in the stomach

A

the acid denatures it

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10
Q

are proteins clipped in the stomach

A

only a little

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11
Q

where are proteins mostly clipped

A

the small intestine

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12
Q

what enzyme clips proteins

A

protiaze

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13
Q

are di and tri peptides absorbed into the blood

A

yes but mostly single aa

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14
Q

functions of protein

A

-growth and maintenance
-fluid balance
-acid base balance
-building enzymes, hormones, and compounds
-immunity antibodies
-providing energy and glucose
-blood clotting
-transport
-protein balance

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15
Q

gluconeogenesis

A

making glucose from amino acids

16
Q

what does protein do for acid base balance

A

aa keep the blood at the right ph

17
Q

what is edema

A

when protein leaves the blood and the fluid goes to the tissues

18
Q

what is a positive protein balance

A

intake of protein is greater than the excretion (growth)

19
Q

what is negative protein balance

A

intake of protein is lower than the excretion (inadequate protein intake)

20
Q

what makes a protein “high quality”

A

it has all the right aa in the right proportions

21
Q

how much aa do low quality proteins have

A

some but not a lot, not enough to meet rda

22
Q

rda for protein

A

.8g/kg

23
Q

average calorie intake for protein

A

10-35%

24
Q

how much protein a serving

A

20g

25
Q

consequences of too little protein

A

-malnutrition
-slow growth
-impaired immune system
-impaired nutrient absorption
-impaired brain & kidney function

26
Q

types of malnutrition

A

-kwashiorkor
-marasmus

27
Q

what is kwashiorkor

A

not enough protein

28
Q

symptoms of kwashiorkors

A

-edema
-enlarged liver
-mild weightloss

29
Q

what is marasmus

A

not enough protein or calories

30
Q

symptoms of marasmus

A

-dramatic muscle and fat loss
-matchstick arms
-hair gets reddish and falls out

31
Q

is there a protein UL

A

not enough evidence to prove

32
Q

what effect does exercise have on protein

A

it increases your body’s ability to synthesize protein for the next 24 hours

33
Q

why are aa supplements bad

A

they may overload certain transporters, should vary aa intake

34
Q

lacto-ovo

A

can eat milk and eggs

35
Q

lacto

A

can eat milk

36
Q

nutrients of concern for vegetarian diet

A

-protein
-omega 3 fats
-vitamin b12
-vitamin D
-calcium
-zinc
-iron (not more than normal)

37
Q

nutrigenomics

A

effects of nutrients on gene expression

38
Q

nutrigenetics

A

the effect of gene variation on response to nutrients