The first law of thermodynamics states:
A. that energy is constantly being created by entropy events
B. that energy can be used and then destroyed because of entropy's actions on it
C. that energy can be changed from one form to another, but cannot be created or destroyed
D. that energy can be destroyed while it is producing entropy
Answer: C
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Common vectors used to transfer a piece of DNA into a cloning host are
A. bacteriophages. B. artificial chromosomes. C. viruses. D. plasmids. E. All of the choices are correct.
What is happening when someone sprays a bottle of perfume and fragrance spreads evenly throughout the room?
a. Effusion b. Perfusion c. Osmosis d. Diffusion
The most important pain receptors are
a. chemoreceptors. b. baroreceptors. c. stretch receptors. d. nociceptors. e. osmoreceptors.
Which of the following drugs are not matched correctly with their mode of action?
A) Flucytosine: targets fungal DNA replication by blocking transcription when it is converted to a nucleic acid analog that blocks DNA and RNA synthesis B) polyenes: directly interacts with ergosterols which causes targeted plasma membranes to become leaky and leads to cell lysis C) allyamines: inhibits enzymes that build ergosterol which leads to improperly built plasma membranes and fungal cell lysis D) azoles: inhibits ribosome function by entering ribosome as a tRNA, covalently binding to mRNA, and forcing the destruction of the complex E) echinocandin drugs: inhibits fungal cell wall synthesis by targeting an enzyme that makes a component of the fungal cell wall