Taxol is a drug used in chemotherapy that interrupts thefunction of the mitotic spindle and prevents chromosomes fromaligning properly. A cell treated with Taxol would:
A) arrest at the G1 checkpoint B) arrest at the S phasecheckpoint C) arrest at the G2 checkpoint D) arrest at the M phasecheckpoint E) go into the ‘resting’ G0 phase
Which of the following would you predict to find in anindividual after 15 years of persistent opioid use? A) Increasedgene expression of the gene encoding the dopamine re-uptakereceptor protein, leading to higher amounts of dopamine in thesynapse B) Reduced gene expression of the gene encoding thedopamine re-uptake receptor protein, leading to fewer dopaminere-uptake receptors in pre-synaptic neurons C) Increased geneexpression of the gene encoding the dopamine receptor protein,leading to higher dopamine receptor levels in post-synaptic neuronsD) Decreased gene expression of the gene encoding the dopaminereceptor protein, leading to fewer dopamine receptor levels inpost-synaptic neurons E) Reduced gene expression of the geneencoding dopamine
