Structure and Properties of Peptides Disulfide bonds most often stabilize the native structure of intracellular proteins hydrophobic proteins dimeric proteins extracellular proteins intracellular proteins hydrophobic proteins dimeric proteins extracellular proteins 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 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 Decrease in oxygen affinity ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Which of the three subunits of the G proteins binds GDP and GTP? Beta Alpha Gamma Delta Beta Alpha Gamma Delta 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? Thermodynamic stability Complete quaternary structure Complete tertiary structure Complete secondary structure Thermodynamic stability Complete quaternary structure Complete tertiary structure Complete secondary structure ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides When pO2 = Kd of myoglobin, the fractional saturation (YO2) is about 0.1 1.7 0.9 0.5 0.1 1.7 0.9 0.5 ANSWER DOWNLOAD EXAMIANS APP
Structure and Properties of Peptides Hydrogen bonds in a-helices are more numerous than Vander Waals interactions analogous to the steps in a spiral staircase roughly parallel to the helix axis not present at Phe residues more numerous than Vander Waals interactions analogous to the steps in a spiral staircase roughly parallel to the helix axis not present at Phe residues ANSWER DOWNLOAD EXAMIANS APP
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