Nutrients and Energy: Protien

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  • Created by: Becky
  • Created on: 01-03-13 14:17
What percentage of the body is made up of protein?
17%
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What does protein mean?
I am first
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What are proteins made up from?
Carbon, hydrogen, oxygen and nitgrogen
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What are the elements arranged into?
Amino acids
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How are amino acids joined together?
By peptide links and these chains from protein
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Why is protein needed in the diet?
Growth and repair
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What are amino acids?
Building blocks of protein, 20 different types
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What are essential amnio acids know as?
Indispensible
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What are indispensible amnio acids?
Cannot be made by the human body in sufficient amounts for health
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What are dispensible amino acids?
The body is able to make these (non- essential)
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What are the 8 indispensible amino acids?
Leucine, isoleucine, valine, threonine, methionine, phenylalanine (feenaniline) , tryptophan, lysine
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What are the remaining dispensible amino acids?
Alanine, glutamine, arginine, glycine, aspartic acid, proline, asparagine, serine, cysteine, tryosine, glutamic acid
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When can we call it HBV?
If it contains the indespenisble amino acids
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How can protein be obtained?
anaimal or plant sources
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What are the animal sources?
Meat, fish, cheese, eggs and milk
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What are the plant sources?
Pulses, cereals and nuts
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What is teh average daily intake of protein in the UK diet?
85g for men and 62g for women
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What are complementary proteins?
If one food is missing an indespenisble and the other food has that indespensible acid, when eaten together, they compliment each other and then become of HBV
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What is an example of complementary proteins?
Baked beans on toast (low lysine content of toast is complemented by high lysine content of beans)
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What are the three main functions of protein?
1. growth of body cells (growth spurts) 2. maintenance and repair of body cells and tissues 3.provide energy
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How much does one gram of protein provide in energy?
4 kcal
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What is PEM?
Protein Energy malnutrition
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What are the two most common forms of PEM?
Marasmus and Kwashiorkor
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What is marasmus?
Occurs in infants under one year of age who have been weaned off breast milk onto a diet containing too little energy and protein. Child becomes weak and lethargic
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What is kwashiorkor?
Occurs in children who, after breast feeding are weaned onto a diet high in starchy foods that are low in energy and protein. Body swells with oedema, hair is thin and discoloured, skin shows patches of scaliness
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What is oedema?
Water retention
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What happens if you have an excess of protein?
it will be used towards energy and can result in surplus energy
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What does protein mean?

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I am first

Card 3

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What are proteins made up from?

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Card 4

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What are the elements arranged into?

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Card 5

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How are amino acids joined together?

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