Conjugation is
1.the uptake of naked DNA from the environment.
2.mediated by bacteriophages.
3.when a copy of DNA from one bacterial cell enters another cell.
4.when one cell divides.
5.when DNA is exchanged between sexually reproducing organisms.
3
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What kind of symbiosis occurs between bioluminescent bacteria and its host?
a. Commensalism b. Mutualistic c. None of these choices d. Parasitism
Clearly differentiate between the following terms: gross primary productivity and net primary productivity What will be an ideal response?
When aerosols containing pathogens spread disease from a distance of less than one meter, it is considered
A) vector transmission. B) waterborne transmission. C) contact transmission. D) airborne transmission.
Respond to the following statements in reference to the five regions of the vertebrate brain listed below.
A. This region governs abstract thought. B. This region functions in homeostasis. C. This region connects the spinal cord to the midbrain. D. This region is used for spatial orientation. E. This region relays signals between the spinal cord and pons.