« previous next »

Author Question: Why is a pathogen generally more virulent in a new habitat? A) More pathogens te (Read 1032 times)

penza

  • Hero Member
  • *****
  • Posts: 1,022
on: Oct 27, 2013
Why is a pathogen generally more virulent in a new habitat?
A) More pathogens tend to immigrate into newer habitats.
B) Intermediate host species are more motile and transport pathogens to new areas.
C) Pathogens evolve more efficient forms of reproduction in new environments.
D) Hosts in new environments have not had a chance to become resistant to the pathogen through natural selection.
E) New environments are almost always smaller in area so that transmission of pathogens is easily accomplished between hosts.


Celeste

  • Hero Member
  • Posts: 588
Reply #1 on: Jun 13, 2019
D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Aquatic microclimates: aquatic environments generally show less temperature variation compared to te Aquatic microclimates: aquatic environments generally show less temperature variation compared to te
Examples of pathogens. Examples of pathogens.
Fungal Pathogens Fungal Pathogens
Common Bacterial Pathogens Common Bacterial Pathogens
A wide variety of pathogens may live on or in the human body A wide variety of pathogens may live on or in the human body
How to calculate the DRT to determine which is more effective against the pathogen How to calculate the DRT to determine which is more effective against the pathogen
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library