Molecules with both a positive and a negative charge, but an overall neutral charge, are called……. 

A hydrophobic amino acid R group would be found where in a protein? A) forming a peptide bond with the next amino acid in the chain B) on the outside of the folded chain, in the water  C) on the inside of the folded chain, away from waterD) forming hydrogen bonds with other R groups E) only at one end of a protein chain

Which of the following is NOT a part of the hemoglobin (HEME-B) molecule? A) Iron B) Magnesium C) Histidine D) Pyrrole ring

What is the pI of arginine? pK1=2.83, pK2=8.99, pKR=11.49 A) 41            B) 7.16           C) 10.24           D) 10.74

When binding with oxygen, what type of binding curve does hemoglobin have? A) Linear B) Hyperbolic C) Sigmodial D) None of them

The pOH of a solution of NaOH is 11.30. What is the for this solution? A) 2.0 x 10-3 B) 3.5 x 10-5 C) 5.0 x 10-12 D) 4.0 x 10-12

Which amino acid is most likely to be found on the interior of a globular protein? A) Aspartate               B) Glycine                    C) Serine                     D) Cysteine

 In a highly basic solution, pH = 13, the dominant form of glycine is: A) NH2—CH2—COOH B) NH2—CH2—COO- C) NH2—+CH3—COO- D) +NH3—CH2—COOH E)  + NH3—CH2—COO-

 How is the secondary structure of a protein stabilized? A) Van der wall forces B) Hydrogen bonding C) Covalent bond D) Hydrophobic bond

Which amino acid is classified as basic?   A) Valine B) Glutamic acid C) Phenylalanine D) Lysine