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CMBM exam 3 > Dietary Protein > Flashcards

Flashcards in Dietary Protein Deck (29):
0

Condensation reaction

links AA together

1

Hydrolysis reaction

breaks up proteins into AA

2

Whats a high quality protein?

milk
yogurt
cheese
meat
eggs
soybeans

3

Plant sources of proteins

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

4

Essential AAs?

Histidine
Isoleucine
Leucine
Lysine
M
Phenylalanine
Threonine
Tryptophan
Valine

5

Protein provides __ calories/gram

4

6

Foods rich in animal protein tend to be high in ...

saturated fats

7

starvation always causes ....

wasting of lean body tissue in addition to fat loss

8

Major proteolytic enzyme in the stomach?

Pepsin

9

zymogen produced by gastric cells ....

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

10

first step in deamination

removal of N containing amino group
produces Ammonia and usually a keto acid

11

Ammonia is toxic, what does the liver do?

combines Ammonia with carbon dioxide to produce urea and water

12

High blood ammonia indicates

liver disease

13

High blood urea indicates

kidney disease

14

Marasmus

chronic protein energy malnutrition

15

Kwashiorkor

acute malnutrition due to lack of dietary protein
causes: famine, food "faddism", perceived intolerances (diary and gluten),

16

Symptoms of Kwashiorkor

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

17

BUN

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

18

Creatinine clearance test

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

What are normal creatinine values?

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

21

Tyrosine is necessary for...

melanin production

22

What is the mechanism behind PKU?

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

23

What is the treatment for PKU?

Low pheylalannine diet

24

What is the mechanism for Maple syrup urine disease?

Inability to break down the branched chain amino acids

25

What changes pepsinogen to pepsin?

H+

26

What changes trypinogen to trypsin?

Enteropeptidase

27

What cleaves chymotrypsinogen to chymotrysin?

Trypsin

28

What cleaves proelastase to elastase?

Trypsin

29

What cleaves procarboxypeptidases to carvoxypeptidase?

Trypsin