3.4.3 Disease Agents and Natural Selection

3.4.3 Disease Agents and Natural Selection

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Multiple Choice

Are viruses considered living?

• Yes

• No

Multiple Choice

Vaccines are an example of which type of immunity?

• Passive immunity

• Active immunity

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Multiple Choice

Which best describes active immunity?

• The resistance developed in an organism by its own production of antibodies in response to an exposure to an antigen, a pathogen, or to a vaccine.

• A resistance acquired through breastfeeding newborns.

• A resistance acquired by the overuse of antibiotics causing weak bacteria to die and resistant bacteria to multiply.

• Resistance developed by regularly washing hands with soap and water as an effective way to prevent bacterial infections.

Multiple Choice

Which role does disease most likely play in Darwin’s concept of natural selection?

• Disease epidemics spread and destroy an entire species, allowing other species to take their place.

• Disease epidemics destroy the members of a population with the weakest immunities, and survivors pass their immunities on to future generations.

• Disease epidemics destroy the members of a population with the weakest immunities, but survivors do not pass their immunities on to future generations.

• Disease epidemics randomly destroy the members of a population, and the immunity against the disease remains unchanged.

Multiple Choice

How does the genetic disorder sickle cell anemia cause evolution by natural selection?

• Sickle cell restricts participation in certain athletic events.

• Sickle cell is found in many locations around the globe.

• Sickle cell causes extreme disease in persons who live at high altitudes.

• Sickle cell promotes resistance to malaria and as a result, it was how this trait increased in certain populations.