Some plasmid vectors have incorporated the regulatory sequences of the lactose operon so that the expression of the recombinant gene can be induced at the appropriate time.
Answer the following statement true (T) or false (F)
True
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Philippe Bouchet and colleagues conducted a massive survey of marine molluscs on the west coast of New Caledonia. Twenty percent of the species found were represented by a single specimen. What does that suggest about the diversity of molluscs in this are
A) The west coast of New Caledonia is not an appropriate habitat for molluscs. B) They did not spend enough time sampling in the area. C) Many of the species from this 20 percent are probably rare. D) They were not sampling uniformly throughout the area. E) Many of the species from this 20 percent are most likely just dispersing through the area.
In vertebrates, DNA methylation - the addition of a methyl group to DNA nucleotides - ensures that
A. the gene functions without interruption. B. no errors will be made during transcription. C. the nucleosome will quickly form, which assists in mRNA formation. D. once that gene is transcribed, the mRNA is saved and used over and over again. E. once a gene is turned off, it will remain off.
Within a single motor neuron, what direction does an impulse follow?
a. dendrite ? axon ? cell body b. axon ? dendrite ? cell body c. dendrite ? cell body ? axon d. cell body ? dendrite ? axon e. cell body ? axon ? dendrite
Which organ requires oxygen levels high enough to maintain aerobic respiration
What will be an ideal response?