Many bacteria are pathogenic because they carry large segments of DNA called ________ ________, which were acquired by horizontal gene transfer, and which carry genes responsible for virulence.
What will be an ideal response?
pathogenicity islands
Biology & Microbiology
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In animal cells, ____ is (are) usually a one-way
path.
a. replication b. translation c. transcription d. differentiation e. replication and translation
Biology & Microbiology
A flood wiping out a population would be an example of
A) exponential growth. B) survivorship curve. C) demographic stochasticity. D) environmental stochasticity.
Biology & Microbiology
Phagocytic cells that digest a pathogen, then insert a bit of pathogenic antigen on their cell membrane, are described as being _____ cells.
A. natural killer B. helper T C. antigen-presenting D. memory
Biology & Microbiology
In the "typical" menstrual cycle, day 1 is the day
A) ovulation occurs. B) fertilization occurs. C) the corpus luteum disintegrates. D) LH levels surge. E) menstruation begins.
Biology & Microbiology