Proteins Flashcards
Name the monomer shown in the diagram
Amino acid
Name the elements found in an amino acids
Carbon
Hydrogen
Oxygen
Nitrogen
Name the bond formed between two amino acids
Peptide bond
Name the type of reaction used to break a peptide bond
Hydrolysis
Name the level of protein structure shown in the diagram
Primary structure
Define primary structure of proteins
Specific sequence of amino acids joined by peptide bonds
Name the type of reaction used to join two amino acids together
Condensation reaction
How is this sectondary strucutre held in place?
Hydrogen bonds
Name the type of secondary structure shown on the diagram
Alpha helix
Name the type of secondary structure shown on the diagram
Beta pleated sheet
Give a defintion of secondary structure
Specific folding of the promary structure held in place by hyudrogen bonds
Give a definition of tertiary structure
Specific folding of the secondary structure held in place by hydrogen, ionic and disulfide bonds
Name a protein that has a tertiary structure
Enzyme
Name a protein that has a quaternary structure
Haemoglobin
Antibody
Chlorophyll
Give a definition of a quaternary structure
Protein made of two or more polypeptides
What is a disulfide bridge?
A bond between 2 supfur atoms
Which amino acid contains supfur?
Cysteine
Name the three parts of an amino acid
NH3 - amine group
COOH - carboxyl group
R group - variable side chain
Describe how a dipeptode is formed
Condensation reation
Form a peptide bond between 2 amino acids
Hydrogen removed from NH3 group
Hydroxyl group removed from the carboxyl group
What is a polypeptide?
Mnay amino acids joined together by peptide bonds
Describe a biochemcial test for a protein
Biuret test
Add Biruet solution
Positive result - lilac
Negaive result - blue
Nmae the organelle responsible for joining maino acids together
Ribosome
