The process by which genetic material is exchanged between different species, such as an endosymbiont and its host, is:
A. vertical gene transfer
B. horizontal gene transfer
C. binary fission
D. mutualism
E. parasitism
B. horizontal gene transfer
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How does her body produce antibody against C. tetani?
A. Every B cell in her body produces antibodies against C. tetani. B. Every cell in her immune system produces antibodies against C. tetani. C. The B cell with appropriate antibody is stimulated to divide, producing plasma cells that make antibodies to C. tetani, and memory cells that "remember" C. tetani. D. The B cell that produces the appropriate antibody undergoes genomic rearrangement in order to produce other cells that produce the same antibody.
. Of the four types of T cells, only the ____________________ cells destroy infected body cells. Fill in the blank(s) with the appropriate word(s)
Bacterial chemoautotrophs use organic chemicals as an energy source
____________ Indicate whether the statement is true or false.
Recombinant DNA refers to the
A) study of bacterial ribosomes. B) study of the function of genes. C) interaction between human and bacterial cells. D) synthesis of proteins from genes. E) DNA resulting when genes from one organism are inserted into another organism.