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CMBM exam 3 > Dietary Protein > Flashcards

Dietary Protein Flashcards

0
Q

Hydrolysis reaction

A

breaks up proteins into AA

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1
Q

Condensation reaction

A

links AA together

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2
Q

Whats a high quality protein?

A 
milk 
yogurt
cheese 
meat 
eggs 
soybeans
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3
Q

Plant sources of proteins

A

as protein sources do not provide all of the essential AA but in combination do

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4
Q

Essential AAs?

A 
Histidine 
Isoleucine 
Leucine 
Lysine
M
Phenylalanine 
Threonine 
Tryptophan 
Valine
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5
Q

Protein provides __ calories/gram

A

4

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6
Q

Foods rich in animal protein tend to be high in …

A

saturated fats

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7
Q

starvation always causes ….

A

wasting of lean body tissue in addition to fat loss

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8
Q

Major proteolytic enzyme in the stomach?

A

Pepsin

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9
Q

zymogen produced by gastric cells ….

A

pepsinogen

HCl from parietal cells induces change in pepsinogen to produce active pepsin

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10
Q

first step in deamination

A

removal of N containing amino group

produces Ammonia and usually a keto acid

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11
Q

Ammonia is toxic, what does the liver do?

A

combines Ammonia with carbon dioxide to produce urea and water

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12
Q

High blood ammonia indicates

A

liver disease

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13
Q

High blood urea indicates

A

kidney disease

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14
Q

Marasmus

A

chronic protein energy malnutrition

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15
Q

Kwashiorkor

A

acute malnutrition due to lack of dietary protein

causes: famine, food “faddism”, perceived intolerances (diary and gluten),

16
Q

Symptoms of Kwashiorkor

A 
decreased muscle 
diarrhea
Edema 
fatigue 
large belly that sticks out 
increased and more severe infections 
rash and sores that dont heal
17
Q

BUN

A

urea nitrogen is what forms when protein breaks down
normal is 6-20 mg/dL
lower than normal seen in low protein/malnutrition

18
Q

Creatinine clearance test

A

compares level in urine and blood
this is a break down product of creatine which is impt part of muscles
Muscles protein always breaks down in cases of starvation-induced malnutrition

19
Q

What are normal creatinine values?

A

Male: 97 to 137 ml/min
Female: 88 to 128 ml/min

21
Q

Tyrosine is necessary for…

A

melanin production

22
Q

What is the mechanism behind PKU?

A

Inability to break down phenylalanine due to due to lack of phenylalanine hydroxylase (PAH)

23
Q

What is the treatment for PKU?

A

Low pheylalannine diet

24
Q

What is the mechanism for Maple syrup urine disease?

A

Inability to break down the branched chain amino acids

25
Q

What changes pepsinogen to pepsin?

A

H+

26
Q

What changes trypinogen to trypsin?

A

Enteropeptidase

27
Q

What cleaves chymotrypsinogen to chymotrysin?

A

Trypsin

28
Q

What cleaves proelastase to elastase?

A

Trypsin

29
Q

What cleaves procarboxypeptidases to carvoxypeptidase?

A

Trypsin

CMBM exam 3 (24 decks)

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