Based on their abundance and location in bacterial genomes, deduce which is LEAST likely to horizontally transfer into another bacterium while maintaining its identical function and regulatory roles
A) heat shock protein-encoding gene
B) lac operon
C) catabolic regulon
D) quorum sensing operon
Answer: C
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In conjugation the donor cell is recognized by the presence of
A. an F plasmid. B. a Y chromosome. C. diploid chromosomes. D. an SOS response. E. an F plasmid AND diploid chromosomes.
Which of the following is used by earthworms and some amphibians for respiration?
a. gills b. pulmonary ventilation c. skin d. diffusion
Which of the following describes passive immunity?
A. antibodies transferred to the fetus from the mother across the placenta B. vaccination for polio C. allowing oneself to become infected with chicken pox D. vaccination for influenza E. catching a common cold
Early biologists classified living things into two kingdoms. Many biologists today recognize
__________ kingdom(s). a. one b. two c. three d. six e. twelve