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A Level Food > Protein > Flashcards

Protein Flashcards

1
Q

What are HBV proteins

A

Proteins containing all of the essential amino acids e.g. Meat, dairy, poultry, soya

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2
Q

What are LBV proteins

A

Proteins that do not contain all essential amino acids e.g. Lentils, quorn, chickpeas, nuts

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3
Q

What is protein used for

A

Growth and repair and second source of energy

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4
Q

What are IAAs

A

Indispensable amino acids that are essential for growth

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5
Q

What elements do proteins contain?

A
  • carbon
  • hydrogen
  • oxygen
  • nitrogen

Sometimes:
•phosphorus
•sulphur

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6
Q

Why are animal proteins more expensive than plant

A

Plants need:

  • rain
  • fertiliser
  • can fit more in land

Animals need:

  • vaccine
  • shelter
  • warmth
  • food
  • slaughtering
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7
Q

What protein does meat fish (connective tissue) contain?

A

Collagen

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8
Q

What protein does meat fish (muscle tissue) contain?

A

Myosin

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9
Q

What protein does meat (muscle fibre) contain?

A

Elastin

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10
Q

What protein does milk and cheese contain?

A

Caesinogen

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11
Q

What protein does milk contain?

A

Lactalbumin

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12
Q

What protein does egg white contain?

A

Ovalbumin

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13
Q

What protein does egg yolk contain?

A

Lipovitellin

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14
Q

What protein does wheat contain?

A

Gliadin/ gluten

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15
Q

What protein does maize contain?

A

Zein

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16
Q

Who needs extra protein and why?

A

Athletes- for repair
Children- growth
Pregnant women- growth of baby
Teenagers- growth spurt>rapid period of growth

17
Q

What are the effects of excess protein?

A
  • broken down used as secondary source of energy
  • diets with more than 30% of the kcals coming from protein can put the kidneys under stress due to ketone toxin build up in the blood
18
Q

What does PEM stand for?

A

Protein Energy Malnutrition

19
Q

What is kwashiorkor

A

A disease caused by protein deficiency. It causes the stomach to bloat as it has a build up of liquid. It can cause stunted growth, thin arms and legs.

20
Q

What is marasmus?

A

When all energy sources have depleted and been used for vital organs. It causes the infant to look emanciated

21
Q

What is protein complementation?

A

When 2LBV protein foods are eaten together to make a HBV, ensuring they receive all the essential (indispensable) amino acids.

A Level Food (6 decks)

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