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LifeSci 2N03 > Module 4 - Protein > Flashcards

Module 4 - Protein Flashcards

1
Q

what is one of the most popular supplements consumed by Canadians?

A

protein powder

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2
Q

dipeptides

A

two amino acids joined

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3
Q

tripeptides

A

3 amino acids joined

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4
Q

polypeptide

A

chain of 4 or more amino acids

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5
Q

indispensable amino acid

A

essential, not synthesized within the body, must be consumed in diet

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6
Q

dispensable amino acid

A

can by synthesized within the body

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7
Q

how many amino acids?

A

20

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8
Q

An amino acid that can be made in the body under normal circumstances is called:

A

dispensable

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9
Q

what two factors influence protein quality?

A

1 digestibility

2 amino acid composition

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10
Q

where are proteins digested?

A

in stomach with HCL and pepsin

in small intestine with proteases and peptidases

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11
Q

where are amino acids absorbed?

A

in the duodenum and jejunum

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12
Q

Protein digestion begins in the…

A

stomach

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13
Q

what interferes with protein digestibility?

A

tannis in legumes or grains interferes with amino acid absorption

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14
Q

regarding protein, the more processed the food…

A

the less digestible the protein

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15
Q

In the study of protein nutrition, which of the following terms describes the amount of amino acids absorbed from a given amount of protein consumed?

A

digestibility

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16
Q

The digestibility of soy isolate is higher than whole soybean because:

A

there is less trypsin inhibitor in soy isolate

17
Q

PDCAAS

A

Protein Digestibility Corrected Amino Acid Score; method for evaluating protein quality regarding digestibility and indispensable amino acid content ranging from 0-100% or 0-1.0

18
Q

Which of the following is true regarding PDCAAS?

A

This score is influenced by amino acid content and digestibility of the protein in the food

19
Q

Protein AMDR

A

10-35% of kcal

20
Q

protein RDA

A

0.8g/body mass/day

LifeSci 2N03 (5 decks)

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