BCH4024 070125 OC Su25 E2 Q39: Estrogen binding to the estrogen nuclear hormone receptor stimulates cells to proliferate (grow and divide). Tamoxifen is a drug that was developed to treat breast cancer. It acts by binding the estrogen nuclear hormone receptor as an antagonist. How does tamoxifen alter gene expression in breast cancer cells?

BCH4024 070125 OC Su25 E2 Q15: After an action potential reaches the synaptic terminal of a neuron, what is the immediate consequence in the post-synaptic muscle cell?

BCH4024 070125 OC Su25 E2 Q49: During fasting, which hepatic enzymes are typically phosphorylated? 

BCH4024 070125 OC Su25 E2 Q38: Suppose you discovered a mutant yeast whose glycolytic pathway was shorter because of a new enzyme bypassing the following step: What would be the consequence of bypassing this step? 

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?