Structure and Properties of Peptides Hydrogen bonds in a-helices are analogous to the steps in a spiral staircase roughly parallel to the helix axis more numerous than Vander Waals interactions not present at Phe residues analogous to the steps in a spiral staircase roughly parallel to the helix axis more numerous than Vander Waals interactions not present at Phe residues ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides What is the effect of a decrease in pH on hemoglobin oxygen affinity? No effect on oxygen affinity Decrease in oxygen affinity Increase in oxygen affinity Increase affinity in muscle cell otherwise decrease No effect on oxygen affinity Decrease in oxygen affinity Increase in oxygen affinity Increase affinity in muscle cell otherwise decrease ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Hemoglobin has quaternary structure and is made up of six polypeptide chains, two α-chains and four β-chains two polypeptide chains, one α-chains and one β-chains five polypeptide chains, two α-chains and three β-chains four polypeptide chains, two α-chains and two β-chains six polypeptide chains, two α-chains and four β-chains two polypeptide chains, one α-chains and one β-chains five polypeptide chains, two α-chains and three β-chains four polypeptide chains, two α-chains and two β-chains ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides The oxygen in hemoglobin and myoglobin is bound to the iron atom in the heme group the nitrogen atoms on the heme histidine residues in the protein lysine residues in the protein the iron atom in the heme group the nitrogen atoms on the heme histidine residues in the protein lysine residues in the protein ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides The peptide bond in proteins is usually cis unless proline is the next amino acid only found between proline residues is planar because of steric hinderance usually trans unless proline is the next amino acid usually cis unless proline is the next amino acid only found between proline residues is planar because of steric hinderance usually trans unless proline is the next amino acid ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides What is the proportion of glycine residues in collagenous regions? One-third One-tenth Half One-fourth One-third One-tenth Half One-fourth ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS