Eddie looks at his broth tubes that have been incubating at different temperatures for 48h. One tube, "A", looks significantly more turbid than another tube "B". When he measures the optical density of his samples Tube A has an OD of 0.62; Tube B has on OD of 0.24. Do these results make sense?
What will be an ideal response?
Yes
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A researcher might use site-directed mutagenesis because
A) spontaneous mutations occur too frequently to study. B) using a mutagen yields results that are specific to a gene and not applicable everywhere in the genome. C) mutation can happen at a specific site in the genome, compared to a mutagen that might cause mutations in several genes. D) it works in humans but not in experimental organisms or cell culture.
Which label, A, B, C, or D, points to a neurosecretory neuron responsible for release of ADH and oxytocin?
1.A
2.B
3.C
4.D
Barbara McClintock identified corn mutants with the unstable mutant phenotype with what pattern of color?
What will be an ideal response?
Slime molds are funguslike protists, but they are not fungi. Why?
A.) They have a stem B.) They contain chlorophyll C.) They can move D.) They are decomposers