The most important glucocorticoid in humans is cortisol. Cortisol has pleiotropic effects across cardiovascular, metabolic, immunologic and homeostatic systems. All of the following are likely consequences of an exogenous administration of cortisol EXCEPT: A. Stimulation of gluconeogenesis B. Inhibition of…
According to Charles’s Law, what happens to a gas as the temperature is decreased? A. Volume decreases B. Pressure decreases C. Volume increases D. Number of moles of gas increases Click for Explanation Charles’s Law states: ΔG = ΔH –…
A researcher places several colonies of Clostridium, an obligate anaerobe, in a nutrient-rich broth but accidentally leaves the caps off the test tubes. Returning the next day, she notices that none of the tubes have shown bacterial growth. Which of…
In an experiment, a student is releasing a block from the top of several distinct inclined planes and allowing it to slide to the bottom. Assume that the tracks are frictionless and that all inclines have equal heights. The speed…
Which of the following pairs of molecules have bond angles that are the most similar? A. CH4, CO2 B. BF3, NH3 C. H2O, SO2 D. CH4, H2O Click for Explanation Similar bond angles generally – but not always – imply…
Consider the following reaction: Reactions 1 and 2 can be respectively characterized as: A. peptide bond formation, nucleophilic acyl addition B. polymerization, hydrolysis C. hydrolysis, peptide bond formation D. nucleophilic addition, hydrolysis Click for Explanation The reaction depicted shows two…
Two model trains are propelled along a straight, frictionless track by electric motors. Train X has a total mass of 100g and is moving at speed v. Train Y has a total mass of 10g and is moving at speed…
An individual is born with a mutation causing her to partially retain a form of fetal hemoglobin into adulthood. Compared to a normal individual, this person would exhibit: A. no differences from a normal adult. B. significantly reduced oxygen binding…
The pressure above a solid compound is slowly reduced. Which of the following is true? A. If the substance is H2O, it will transition from solid directly into gas. B. For all substances except H2O, the substance will transition into liquid…
The flow of blood through the aorta can be approximated with the volumetric flow rate equation. When the smooth muscle of the aorta contracts, the radius can decrease by as much as 10%. If the blood flow is to remain…