The general goal of first-line defenses is to
A) prevent pathogen entry.
B) destroy pathogens.
C) isolate pathogens.
D) weaken pathogens.
E) tag intruders with a signaling molecule to identify them as foreign.
Answer: A
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Your study buddy asks, "would you please explain the difference between home range and territory?" What is the best response?
A. Territory is the entire area that an animal can utilize for its resources, such as shelter, food, and mates. Home range is near its nest or den. B. Territory is the area that an animal can utilize for its resources, such as shelter, food and mates and will defend against other members of its species. Home range is near its nest or den. C. Territory is the area that an animal can utilize for its resources, such as shelter, food and mates, and will defend against other members of its species. Home range is the area that an animal may roam over on a daily basis. D. Territory is the area that an animal can utilize for its resources, such as shelter, food and mates, and will defend against others members of its species. Home range is a smaller area within the territory that the animal is found in when it is resting or hiding from predators.
In patients who receive transplants, the recognition protein in the transplanted organ would be different than that of the recipient. What would this mean for the patient?
1.The patient would begin to recognize the new protein as self.
2.The patient’s immune system would attack and reject the new organ, requiring the patient to take immune suppressing medication.
3.The protein of the transplanted organ must be changed to match that of the patient.
4.The proteins on the surface of the cells from the transplanted organ will modify themselves to more closely resemble those of the patient, so the patient’s immune system wouldn’t reject it.
The earliest known organism capable of sexual
reproduction is a type of a. virus. b. bacterium. c. alga. d. animal-like protist. e. fungus.
A fertilized moth egg passes through which stages of
development before becoming an adult? I. larval II. pupal III. reproductive a. I only b. II only c. I and II d. I and III e. II and III