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At atmospheric pressure, carbon dioxide undergoes sublimation at -109.5°F. How does the entropy change when CO2 undergoes deposition? A. ΔS>0 B. ΔS<0 C. ΔS=0 D. cannot be determined Click for Explanation Deposition is a phase change from gas directly to…
What is the structure of methyl propanoate? A. CH3COCH2CH3 B. CH3COOCH3 C. CH3CH2COOCH3 D. CH3CHOCH2CH3 Click for Explanation Break down the compound name: methyl indicates CH3, propane indicates a 3-carbon chain, and “oate” indicates an ester linkage. Only choice C)…
The snapdragon is a plant demonstrating incomplete dominance in the flower color phenotype. If homozygous snapdragons have either red or white flowers, what color are the heterozygotes? A. red, because the white coloring reflects all incoming light wavelengths in flowers…
While viruses are incredibly simple structures composed of little more than a protein coat and some DNA, some viruses require enzymes to be packaged in with their genetic material. Human immunodeficiency virus (HIV) is an example of a retrovirus. In…
Which of the following is (are) true regarding genetic drift? I. Genetic drift has more pronounced effect on alleles with a low allele frequency than on alleles with a high allele frequency, regardless of population size. II. Genetic drift is…
A chiral carbon, C, is bonded to four different substituent groups: A, B, C, and D. Which compound is identical to the molecule depicted above? Click for Explanation A chiral carbon, C, is bonded to four different substituent groups: A,…
An object rests on a plane, with an angle of incline, θ, an acceleration due to gravity, g, and a coefficient of friction μ between the object and the plane. Which of the following gives the acceleration of the object?…
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 –…
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…