CH 3 Exam 1 Proteins Flashcards Preview

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Flashcards in CH 3 Exam 1 Proteins Deck (29):
1

Organic compound made up of amino acids?

Protein

2

Primary role of protein in the body?

growth
maintenance
repair

3

Amino Acids are building blocks for proteins which contain?

Carbon
Hydrogen
Oxygen
Nitrogen
and sometimes Sulfur

4

T/F a protein is large and made up of more than 100 amino acids

True

5

T/F Amino Acids are ESSENTIAL(Indispensable) Cant Synthesize, Must be get these from FOOD.

True

6

What is an essential amount of AA's needed?

9

7

T/F Amino Acids are NONESSENTIAL(dispensable) Synthesize in liver, or from diet.

True

8

What is a nonessential amount of AA's needed?

11

9

Good protein quality is needed for our bodies to make its complex parts. which are?

Skin
Tendons
Bone matrix
Cartilage
Connective Tissue
Teeth
Eye lens

10

Foods that consist of all 9 essential amino acids in sufficient amounts and animal sources (e.g) fish, meat, eggs, cheese, milk and soy protein

Complete Protein (high-quality)

11

Lack one or more essential amino acids (e.g) plant proteins

Incomplete Protein (Low-quality)

12

Combining two foods (protein) in the same meal to compensate for deficiences in amino acid content. Use of whole grain is important.

Complementary Proteins

13

T/F Functional Proteins regulates pH of the mouth

True

14

T/F Physiology of proteins is that digestion begins in the stomach

True

15

Recommended Dietary Intake RDI of protein depends on body size and physical activity. Estimated at?

40-65 grams/day

16

What happens to the body when it is lacking protein?

Anemia
lowered resistance to infecton
edema
brittle & slow growing hair/nails
scaly skin w/ sores that wont heal

17

Two most worldwide Protein-energy Malnutrition (PEM) deficiencies are?

Kwashiorkor
Marasums

18

My plate recommends no more than how many oz of a protein rich food source or less per day?

6oz

19

If the body does contain more than 6oz needed the body has 2 choices which is? (Excess Protein)

use for energy
store it for fat

20

1) Acute Form
2) Severe protein deficiency
3) begins at 18mths to 2 years of age
4) Edema in legs, abdomen, face
5) child fails to grow and gain weight
6) delayed eruption & hypoplasia of teeth

Kwashiorkor
"evil spirit infects the first child when second child is born"

21

1) Chronic form
2) Body's adaption to starvation
3)inadequate food intake(protein/calorie deficiency) over a long period time
4) skin and bones
5) Muscles and heart waste away and weakens
6) Common in children 6-18 months in impoverished nations

Marasums
"to waste away"

22

What are building blocks for proteins?

Amino-acids

23

T/F protein is vital for life and second only to water as the most important nutrient.

True

24

When two amino acids link together the resulting structure is called?

A dipeptide

25

When three amino acids are linked its called?

Tripeptide

26

When there are several hundred amino acids linked together, they form a?

Polypeptide

27

In order for amino acids to join together, two hydrogen and one oxygen are dropped (water molecule) forming a bond?

Peptide bond

28

A small amount of high quality protein added to a meal that is otherwise marginal in terms of protein quantity?

Supplementary protein

29

Explain the digestion of proteins?

Begins in the stomach
Mixed with pepsin
Passes to small intestines
Mixes with trypsin & chymotrypsin
Passes through small intestines where absorbed through the body