The promotion of the lactose operon in
bacteria is
a. activated by a repressor protein.
b. independent of glucose concentration.
c. activated by t lactose binding.
d. regulated by RNA polymerase.
e. none of these
C
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What part of the neuron is responsible for most of the "house-keeping" tasks of the cell, including protein synthesis?
A. myelin B. axon C. dendrite D. soma E. synapse
What is the correct order of these mitotic events?
A Chromosomes align on the midplate of the cell. B Kinetochores begin attaching to spindle fibers. C Nuclear membrane reforms and chromosomes decondense. D Chromosomes condense and centrosomes migrate to opposite sides of nucleus. E Sister chromatids separate and move to opposite poles. A) BDACE B) DABEC C) DBAEC D) ABDCE E) EDBAC
The chancre of syphilis
A. is very painful. B. develops into a lesion with firm margins and an ulcerated central crater. C. occurs due to small hemorrhaging of capillaries. D. occurs during the tertiary stage.
At zero population growth:a
b = d. b. b > d. c. b < d. d. r > 0. e. r > K.