BCH4024 070125 OC Su25 E2 Q21: A female patient presents for evaluation with fatigue and mild jaundice. Red blood cells from the patient have very low levels of reduced glutathione. What enzyme deficiency is most likely associated with her condition? 

BCH4024 070125 OC Su25 E2 Q43: Consequences of liver phosphoenolpyruvate carboxykinase deficiency include:

BCH4024 070125 OC Su25 E2 Q2: What structural adjustment in the lipid bilayer improves membrane fluidity at lower temperatures?

BCH4024 070125 OC Su25 E2 Q44: A 7 month-old baby presented with poor sucking ability and loss of head control and motor skills. He had poor appetite, vomited frequently, cried continuously, and had frequent seizures. Genetic analyses revealed a mutation in his mitochondrial DNA, inhibiting various mitochondrial processes. Which mechanism(s) may be inhibited by mutations in mitochondrial DNA? PDH Complex activity Electron transport Oxidative phosphorylation Glycogen synthesis Glycogen breakdown

BCH4024 070125 OC Su25 E2 Q18: Which of the following describes the effect of a mutation that prevents GTP hydrolysis by a G-protein? 

BCH4024 070125 OC Su25 E2 Q11: Which term describes the process by which a cell decreases its responsiveness to continuous stimulation? 

BCH4024 070125 OC Su25 E2 Q41: The glycolytic enzyme aldolase catalyzes the conversion of:

BCH4024 070125 OC Su25 E2 Q24: Porphyria is an inherited condition that results in the failure to produce sufficient levels of porphyrins (see structure). The failure to produce porphyrins has a significant impact on which of the following? 

BCH4024 070125 OC Su25 E2 Q7:  You have determined the primary sequence of a protein with the following characteristics. Amino acids 1-10: (1) Leucine, (2) Threonine, (3) Valine, (4) Alanine, (5) Histidine, (6) Arginine, (7) Arginine, (8) Leucine, (9) Lysine, (10) Lysine Amino acids 11-33 are primarily leucine, tryptophan, phenylalanine, and alanine Amino acids 34-60 are primarily glutamate, aspartate, alanine, and serine Based on the primary sequence, which of the following predictions is likely CORRECT?

BCH4024 070125 OC Su25 E2 Q35:  Which choice (A — E) for filling in the blanks makes a TRUE statement? Binding of the hormone X_ to its receptor on liver cells leads to the activation of the enzyme Y_, which is involved in the conversion of glucose-6-phosphate to glycogen.          X                                                  Y insulin                            glycogen synthase glucagon                       glycogen phosphorylase epinephrine                       hexokinase leptin                             glycogen synthase acetylcholine                 glycogen phosphorylase