Prokaryotes undergo a process that produces cells that are identical. This process is called
A. mitosis.
B. meiosis.
C. conjugation.
D. binary fission.
E. syngamy.
D. binary fission.
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The scientific method ________.
A. is a linear process that must be precisely followed at all times B. is undertaken only by trained scientists in a controlled laboratory setting C. is a rough recipe for answering questions, but the steps need not always need to be performed in the same order D. is the means by which absolute truth can be uncovered
What functions can complement proteins perform? (Check all that apply.)
_____ amplify the inflammatory response _____ attract phagocytes to the site of infection _____ bind Fc receptors _____ coat invading microbes _____ insert themselves into the foreign cell's plasma membrane _____ provide immunity in response to immunization _____ store "memories" of specific antigens for months or years
___ develop into phagocytic ___ that migrate
through tissues digesting pathogens etc.
a. Macrophages...neutrophils b. Neutrophils...macrophages c. Dendritic cells...macrophages d. Monocytes...macrophages e. Monocytes...dendritic cells
When comparing archaea with bacteria,
A. both archaea and bacteria are easily cultured and studied in the laboratory. B. the chemical nature of the cell wall of archaea and bacteria is identical and shows their early relationship. C. the archaea and bacteria are both derived from early eukarya. D. bacteria are not very diverse and are limited in distribution, while archaea are far more diverse and found everywhere. E. None of the choices are true.