1) What is the test for proteins a) Iodine b) Emulsion c) Benedicts d) Biuret 2) How many amino acids are there a) 3 b) 20 c) 5 d) 30 3) What reaction forms a peptide bond a) Hydrolysis b) Condensation 4) How many levels of protein structure are there a) 3 b) 2 c) 4 d) 5 5) What order do the levels of protein structure go in a) Primary, Secondary, Tertiary, Quaternary b) Quaternary, Tertiary, Secondary, Primary c) Secondary, Primary, Tertiary, Quaternary d) Tertiary, Secondary, Quaternary, Primary 6) Define 'primary structure' of a protein a) Occurs when the sequence of amino acids are linked by hydrogen bonds b) sequence of a chain of amino acids c) is a protein consisting of more than one amino acid chain d) occurs when certain attractions are present between alpha helix and beta pleated sheets 7) Define 'quaternary structure' of a protein a) sequence of a chain of amino acids b) occurs when certain attractions are present between alpha helix and beta pleated sheets c) occurs when the sequence of amino acids are linked by hydrogen bonds d) is a protein consisting of more than one amino acid chain 8) Describe the Disulfide bridges in the tertiary structure of proteins a) relatively strong bonds between charged R groups b) numerous and easily broken c) strong covalent S-S bonds between molecules of the amino acid cysteine 9) Which one is a Biological catalyst a) Protein b) Lipid c) Enzyme d) Carbohydate 10) Which of these describes a non-competitive inhibitor a) similar shape to substrate = bind to active site b) bind at allosteric binding site

Proteins and Enzymes

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