Which direction would you turn Z-DNA to introduce negative super coils?
A. Right
B. Left
A
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The infectious dose
A. is the same for all microorganisms. B. may be 10-100 cells for Salmonella. C. is expressed as ID50. D. is defined as the number of microbes necessary to ensure infection. E. is expressed as ID50 AND is defined as the number of microbes necessary to ensure infection.
Which of the following statements best describes the life cycles of streptophyte algae and plants?
A. The diploid generation of streptophyte algae is unicellular whereas the diploid generation of plants is multicellular. B. The diploid generation of streptophyte algae is multicellular whereas the diploid generation of plants is unicellular. C. The haploid generation of streptophyte algae is multicellular whereas the diploid generation of plants is unicellular. D. The haploid and diploid generations of both steptophyte algae and plants are unicellular. E. The haploid and diploid generations of both streptophyte algae and plants are multicellular.
Today, most monoclonal antibodies are
a. produced using genetically altered bacteria. b. collected from mice. c. collected from sheep. d. collected from horses. e. produced using human subjects.
The brain and spinal cord interpret the frequency of action potentials they receive as
A) stimulus importance. B) convergence. C) stimulus intensity. D) a reflex. E) divergence.