Biology: Parasites and Their Impact
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Questions and Answers

What is the primary source of nutrients for parasites?

  • Their host organism (correct)
  • Other parasites in the ecosystem
  • Their own cellular processes
  • The environment they live in

What is the range of sizes of parasites?

  • Only multicellular
  • From microscopic to multicellular (correct)
  • Always larger than their hosts
  • Only microscopic

Where can parasites be found?

  • Only in urban areas
  • Only in freshwater environments
  • In virtually every environment on Earth (correct)
  • Only in desert environments

What is a potential impact of parasites on human health?

<p>They can cause a wide range of diseases and infections (B)</p> Signup and view all the answers

What role do parasites play in ecosystems?

<p>They are a critical part of many ecosystems (D)</p> Signup and view all the answers

What is the primary function of the cysts formed by ciliate parasites?

<p>To protect themselves from harsh environmental conditions (A)</p> Signup and view all the answers

How can ciliate parasites like Balantidium coli be transmitted to humans?

<p>Through contaminated food or water (D)</p> Signup and view all the answers

What is the significance of the cysts formed by ciliate parasites in terms of public health?

<p>They pose a persistent threat to public health (A)</p> Signup and view all the answers

Why are the cysts formed by ciliate parasites effective in evading the host's immune response?

<p>They form a protective barrier that prevents immune recognition (B)</p> Signup and view all the answers

What is a characteristic of the cysts formed by ciliate parasites like Balantidium coli?

<p>They are highly resistant to harsh environmental conditions (B)</p> Signup and view all the answers

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