Structure and Properties of Peptides The heme is held in place by a bond between the Fe3+ and cysteine the Fe2+ and cysteine the Fe2+ and histidine the Fe3+ and histidine the Fe3+ and cysteine the Fe2+ and cysteine the Fe2+ and histidine the Fe3+ and histidine ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides What was the first protein whose complete tertiary structure was determined? Lysozyme Pancreatic ribonuclease Myoglobin Pancreatic DNase Lysozyme Pancreatic ribonuclease Myoglobin Pancreatic DNase ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides What is the effect of a decrease in pH on hemoglobin oxygen affinity? Decrease in oxygen affinity No effect on oxygen affinity Increase affinity in muscle cell otherwise decrease Increase in oxygen affinity Decrease in oxygen affinity No effect on oxygen affinity Increase affinity in muscle cell otherwise decrease Increase in oxygen affinity ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides If the F and Y angles of each peptide unit in a protein are known, which of the following may also be determined? Complete quaternary structure Complete secondary structure Complete tertiary structure Thermodynamic stability Complete quaternary structure Complete secondary structure Complete tertiary structure Thermodynamic stability ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Disulfide bonds most often stabilize the native structure of dimeric proteins extracellular proteins hydrophobic proteins intracellular proteins dimeric proteins extracellular proteins hydrophobic proteins intracellular proteins ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Hydrogen bonds in a-helices are roughly parallel to the helix axis analogous to the steps in a spiral staircase not present at Phe residues more numerous than Vander Waals interactions roughly parallel to the helix axis analogous to the steps in a spiral staircase not present at Phe residues more numerous than Vander Waals interactions ANSWER DOWNLOAD EXAMIANS APP
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