Which reproductive combination produces hybrids?
a. when individuals of the same species in different geographical areas reproduce
b. when any two individuals sharing the same habitat reproduce
c. when members of closely related species reproduce
d. when offspring of the same parents reproduce
Ans: c. when members of closely related species reproduce
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What prevents host cells from being lysed by the complement system?
a. Host cells are continually replaced. b. Host cells hydrolyze complement proteins. c. Host cells express endogenous proteins. d. Complement proteins only bind to cellulose.
Cells store energy in the form of ____
a. sunlight b. chloroplasts c. carbon dioxide d. glucose e. water
Nucleoli contain chromosomal regions that specialize in making:a
proteins. b. RNA. c. ribosomes. d. lipids. e. hormones.
Bacteria containing recombinant plasmids are often identified by which process?
A. removing the DNA of all cells in a culture to see which cells have plasmids B. examining the cells with an electron microscope C. exposing the bacteria to an antibiotic that kills the cells lacking the plasmid D. producing antibodies specific for each bacterium containing a recombinant plasmid E. using radioactive tracers to locate the plasmids