The envelope of an animal virus is usually derived from the of its host cell.
A. cell wall
B. plasma membrane
C. capsule
D. receptors
B. plasma membrane
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The location where a disease-causing organism is normally found is called the ________.
Fill in the blank(s) with the appropriate word(s).
What would happen if the trachea did not have cartilaginous rings?
A) The trachea would collapse. B) Sense of smell would be lost, and food would taste funny. C) Incoming air would not be humidified. D) Incoming air would not undergo filtration.
You have been studying the relationship between jackals and tigers in India. Until recently, the only relationship you have observed is that jackals will associate themselves with a particular tiger and follow it at a safe distance in order to feed on the big cat's kills. However, recently you observed a jackal alerting a tiger to a potential kill with a loud cry. If you continue to observe this alerting behavior, you might change the categorization of the jackal/tiger relationship from ________ to ________.
A. mutualism; parasitism B. competition; predation C. mutualism; commensalism D. parasitism; mutualism E. commensalism; mutualism
Mitochondrial electron transport takes place ________.
A. on the outer mitochondrial membrane B. in the fluid matrix of the mitochondria C. on the inner mitochondrial membrane D. on the outer mitochondrial membrane and on the inner mitochondrial membrane