7 notecards = 2 pages (4 cards per page)
What role do condensation and hydrolysis reactions play in biological processes?
Condensation reaction -> produce H2O molecule
Structure of amino acids and R groups
Hydrolysis -> gain H2O molecule, breaks up polymers
Monomers form polymers which form proteins which help cells
What determines the properties of a particular amino acid?
Draw the chemical structure of the polypeptide Ile-Gln-Tyr-Lys. Label the side chains and peptide bonds. Explain the terms N- and C-termini, and indicate each on your drawing.
Distinguish what makes a side chain polar, non-polar, charged or non-charged.
N-terminus: The beginning of a polypeptide has the amino group which is NH3
C-terminus: The ending of a polypeptide chain, has the carboxyl group which is OH.
Peptide bond: The C-N covalent bond that results from a condensation reaction, is planar and limits movement of the atoms participating in the peptide bond, amino acids linked by a peptide bond are referred to as residues to distinguish them from free monomers
Explain how secondary, tertiary, and quaternary levels of structure depend on primary structure. Give an example of a how a change in amino acid sequence can alter protein structure and function.
Give three examples of proteins, and state the function of each. How can proteins serve such diverse functions?
Is protein shape fixed? Explain, citing at least one example.
What is an enzyme? What is an active site?