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Protein
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- 1What is an amino acid?An amino acid is a molecule consisting of an amino group, carboxylic acid and an alpha carbon with a hydrogen atom and R group.
- 2What is a protein?Proteins are strings of amino acids, joined together via peptide bonds.
- 3What is a peptide bond?A covalent bond that forms between two amino acids.
Carboxyl group and amino group react via a condensation reaction to form a peptide bond and a molecule of water. - 4What is a denatured protein?When a protein loses its higher structure (ie secondary, tertiary or quaternary) but not its primary structure it is said to be denatured.
The protein may not be able to perform its intended funtion (ie enzymes) but the amino acid chain will be intact, therefore quality is not affected. - 5Can humans absorb whole proteins?No - humans can only absorb amino acids
- 6What is understood by protein quality?The quality of a protein is identifed by its amino acid content.
High quality provides all essential amino acids.
Lower quality only provides some AA.
Quality also considers digestibility - easiier to digest = higher quality.
Digestibility depends on the source of protein and what is eaten with it. - 7What is the difference between essential and non-essential amino acids?Non-essential: Can be made in the body
Essential: cannot be made in the body without breaking down tissues - therefor must be received from the diet. - 8Describe the basic principle of amino acid anabolism.No
- 9Describe the basic principle of amino acid catabolism.No
- 10What is the toxic molecule that may appear during amino acid catabolism?Ammonia
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- Biochemistry Fichas sobre Protein, creado por Elizabeth Chloé el 26/10/2018.
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- Elizabeth Chloé
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