The use of oil with certain high-power objective lenses increases
A. magnification.
B. the amount of light that enters the objective lens.
C. resolution.
D. contrast.
E.
resolution AND the amount of light that enters the objective lens.
E
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Typical conditions used for sterilization are
A. 100?C for 10 minutes. B. 121?C at 15 psi for 15 minutes. C. 80?C for 15 minutes. D. 72?C for 15 seconds.
What could be a possible consequence if a structural gene's TATA box is mutated?
A. The transcriptional start site may not function properly. B. Transcription may start at a variety of sites. C. Unusable transcripts may be produced. D. The preinitiation complex may form at the wrong site. E. All of the choices are correct.
To which class of neurotransmitters does dopamine belong?
a. acetylcholine b. monoamines c. amino acids d. neuropeptides e. gaseous neurotransmitters
The ATP "high-energy" or "energy-rich" bonds are which of the following types of bond?
A) phosphoester B) phosphoanhydride C) hydrogen D) ionic E) monophosphate