Difference between revisions of "Protein"
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: Not enough [[protein]] can cause a [[disease]] called Kwashiorkor. | : Not enough [[protein]] can cause a [[disease]] called Kwashiorkor. | ||
− | ===Protein=== | + | ===Sources of Protein=== |
{| class="wikitable" | {| class="wikitable" | ||
|+ We can eat any of these foods to get enough [[protein]]. | |+ We can eat any of these foods to get enough [[protein]]. | ||
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|- | |- | ||
| style="height:20px; width:300px; text-align:center;" |This [[diagram]] shows an [[Amino Acid|amino acid]] and a small [[protein]] made of 3 different [[Amino Acid|amino acids]]. | | style="height:20px; width:300px; text-align:center;" |This [[diagram]] shows an [[Amino Acid|amino acid]] and a small [[protein]] made of 3 different [[Amino Acid|amino acids]]. | ||
+ | |} | ||
+ | |||
+ | ===Sources of Protein=== | ||
+ | {| class="wikitable" | ||
+ | |+ We can eat any of these foods to get enough [[protein]]. | ||
+ | |- | ||
+ | |[[File:Meat.png|center|200px]] | ||
+ | |[[File:Beans.png|center|200px]] | ||
+ | |[[File:Nuts.png|center|200px]] | ||
+ | |[[File:Peas.png|center|200px]] | ||
+ | |- | ||
+ | | style="height:20px; width:200px; text-align:center;" |Meat provides lots of protein for a [[Balanced Diet|balanced diet]]. | ||
+ | | style="height:20px; width:200px; text-align:center;" |You can help keep your [[diet]] [[Balanced Diet|balanced]] by eating lots of different beans. | ||
+ | | style="height:20px; width:200px; text-align:center;" |Nuts are the [[seed]]s of [[tree]]s and are part of a [[Balanced Diet|balanced diet]]. | ||
+ | | style="height:20px; width:200px; text-align:center;" |There are many different kinds of peas that can help make sure you have a [[Balanced Diet|balanced diet]]. | ||
|} | |} |
Revision as of 09:30, 5 June 2019
Contents
Key Stage 3
Meaning
Proteins are molecules in our diet that are used by our bodies for growth and repair.
About Proteins
- There are many different proteins.
- Protein is used to build muscles and repair injuries.
- Not enough protein can cause a disease called Kwashiorkor.
Sources of Protein
Meat provides lots of protein for a balanced diet. | You can help keep your diet balanced by eating lots of different beans. | Nuts are the seeds of trees and are part of a balanced diet. | There are many different kinds of peas that can help make sure you have a balanced diet. |
Testing For Protein
Method
- 1. Take a small sample of food and dissolve it in water.
- 2. Add some Biuret to the solution.
- 3. If it turns from blue to purple then the food contained protein.
This Biuret has turned purple, indicating protein is present. |
Key Stage 4
Meaning
Proteins, also known as polypeptides, are large polymer molecules made from amino acids that are used by our bodies for growth and repair.
About Proteins
- Proteins (polypeptides) are formed in polymerisation reactions of Amino Acids (peptides).
- Proteins are broken down by our digestive systems into amino acids which are then transported around the body by our blood.
- Cells build new proteins from amino acids in a process called protein synthesis which takes place at the ribosomes in cells.
- Protein is essential to build enzymes which control the metabolic processes inside the cell.
- A single protein can be made of millions of amino acids bonded together.
This diagram shows an amino acid and a small protein made of 3 different amino acids. |
Sources of Protein
Meat provides lots of protein for a balanced diet. | You can help keep your diet balanced by eating lots of different beans. | Nuts are the seeds of trees and are part of a balanced diet. | There are many different kinds of peas that can help make sure you have a balanced diet. |