Four of the following statements about the H5N1 virus are true. Which one is false?
A. It is symptomless in pigs.
B. It has a high mortality rate in humans.
C. It cannot infect birds.
D. It moves poorly from human to human.
E. It can move between pigs.
Answer: C
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In some organisms, crossing-over does not occur, and the homologous chromosomes are held together via some other
mechanism. Even though crossing-over leads to genetic diversity, the absence of crossing-over in these organisms does not prevent the production of diverse gametes. Why is this?
What will be an ideal response?A major risk factor in developing cardiovascular disease is
a. obesity. b. smoking. c. hypertension. d. lack of exercise. e. all of these
The capacity of the pathogen or disease-causing agent to survive outside the host and to exist or thrive in the environment.
a. susceptibility b. viability c. virulence d. none of the above
Which technology was first established by Cro-Magnon?
Select one: a. throwing spears b. scrapers c. controlled fire d. group life e. All of the answer choices are correct.