Home Economics- Protein

Descrição

FlashCards sobre Home Economics- Protein, criado por Naomi Blaney em 05-12-2016.
Naomi  Blaney
FlashCards por Naomi Blaney, atualizado more than 1 year ago
Naomi  Blaney
Criado por Naomi Blaney mais de 7 anos atrás
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Resumo de Recurso

Questão Responda
Proteins are made up of the chemical composition of Hydorgen, Oxygen, Nitrogen and Carbon. Nitrogen is used for growth. The chemical composition of proteins is element -> amino acid-> polypeptide chain. Two examples of amino acids are Cysteine and Glycine.
Essential amino acids cannot be made in the body. We can only get them from food. Examples- Valine, lyceine, luecine, methonine, tryptophan, isoleucine, Proline, Cysteine.
Protein structure Primary-order and sequence- draw basic chain with shapes give examples Secondary-further linking-disulphide link and hydrogen bond. Give examples for protein this happens in. Tertiary-further cross-links; 3D shape- 2 types fibrous and globular. Examples. Classification Simple- plant-LBV (prolamines and glutelins) and animal-HBV (fibrous and globular) eg’s Conjugated- non-protein material on chain (lipoprotein, lecithin in egg)
Functions Structural-growth and repair Physiologically active-produce hormones, enzymes, antibodies Nutrients-essential amino acids; excess energy The sources of protein are from animal and plant. Animal proteins tend to have a higher biological value than plant proteins. This is why animal proteins are knows as hbv and plant proteins are known as lbv.

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