Describe the theory that attempts to explain the species specificity of viruses to their hosts. What will be an ideal response?
Concepts to Consider: Viruses may have come about by escaping from cellular organisms
such as bacteria, plants, and animals. It may be that viruses can only infect organisms from
which they originated. This could explain why viruses are very specialized concerning their
hosts.
You might also like to view...
The threat of bioterrorism
A. is due largely to the ease of spread and severity of diseases. B. is exaggerated in light of the efficiency of our healthcare system. C. may include rarely seen infectious agents. D. has prompted WHO to prepare a readiness plan. E. is due largely to the ease of spread and severity of diseases AND may include rarely seen infectious agents.
Which male reproductive structure is “snipped” during a vasectomy?
1.epididymis
2.vas deferens
3.seminal vesicle
4.urethra
How does external respiration differ from internal respiration?
A) External respiration is done only by some amphibians, which can exchange gases through their skin. B) External respiration refers to gas exchange between inhaled air and blood, whereas internal respiration refers to gas exchange between the blood and tissue fluids. C) External respiration involves gills, whereas internal respiration involves lungs. D) Internal respiration refers to gas exchange between inhaled air and blood, whereas external respiration refers to gas exchange between the blood and tissue fluids. E) External respiration refers to gas exchange, regardless of its location, whereas internal respiration refers to the cellular process that metabolizes glucose and results in the production of ATP.
When you eat mushrooms on your pizza, you are technically eating the
A) mycelium. B) roots. C) fungal leaves. D) seeds. E) chloroplasts.