Questions- 2PAE

• What are two groups common to all amino acid molecules?

  Carboxyl and amine group
• what does the R group on an amino acid represent?

  The unique side group or chain for that amino acid.
• What type of bond is formed when two amino acids join?

  A peptide bond.
• What is a molecule made of two amino acids called?

  A dipeptide.
• what is a molecule made up of many amino acids?

  polypeptide.
• What does a protein with a primary structure look like?

  a polypeptide chain with no extra bonding.
• what two forms can secondary structures of proteins take?

  Alpha helix and beta pleated.
• which type of bonding is involved in the formation of secondary structure for proteins?

  hydrogen bonding
• Which three bonds can form between polypeptides in tertiary protein structures in creating their shape?

  ionic ,hydrogen , disulfide bonds.
• what will happen to the rate of an enzyme controlled reaction if the temperature is increased?

  It will increase until the enzyme denatures due to temperature being too high and breaking bonds.
• what will happen to the rate of an enzyme controlled reaction if the concentration of enzyme is increased?

  Provided there is enough substrate the rate of reaction will also increase.
• What is a competitive inhibitor?

  A type of molecule that bonds to the active site of an enzyme to prevent substrate from bonding.
• Which type of protein structure does haemoglobin have?

  Quaternary.
• Where does the reaction take place in an enzyme?

  active site.
• what is formed when the substrate has attached to an enzyme?

  Enzyme-substrate complex.
• What is the accepted model of enzyme action called?

  induced-fit model.