A health care provider who suspects that a woman may have vaginitis caused by Candida infection can confirm that by
A. submitting a sample of the discharge for PCR amplification.
B. submitting a sample of the discharge for metagenomic sequencing.
C. identifying pseudohyphae in a Gram-stained smear examined using a light microscope.
D. plating a sample of the discharge on a medium containing salt as a selective agent.
E. identifying the characteristic protozoans in a smear examined using a fluorescence microscope.
Answer: C
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A limit-violating prediction is a predicted value that:
A. is measured with noise. B. is heteroscedastic. C. does not fall within that variables limits. D. only is normally distributed in the limit.
To find the gene that encodes for the blue-light receptor, researchers inserted the gene for the PHOT1 protein into insect cells growing in culture
When they exposed the transgenic cells to blue light, they found that the PHOT1 protein became phosphorylated. No other plant proteins were present in the insect cells. Which of the following is a reasonable conclusion from this result? The PHOT1 protein _____. A) enabled the insect cells to photosynthesize B) phosphorylated itself in the presence of blue light C) is not responsive to blue light D) is photoreversible E) is not functional in insect cells
If a particular trait has three phenotypes and one phenotype represents an intermediate, this
trait displays __________.
a. incomplete dominance b. codominance c. recessive alleles d. dominant alleles
By definition, substances that absorb visible light are called:a
photons. b. pigments
c. porphyrins. d. nucleotides. e. hydrocarbons