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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?

They can cause a wide range of diseases and infections Signup and view all the answers

What role do parasites play in ecosystems?

They are a critical part of many ecosystems Signup and view all the answers

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

To protect themselves from harsh environmental conditions Signup and view all the answers

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

Through contaminated food or water Signup and view all the answers

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

They pose a persistent threat to public health Signup and view all the answers

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

They form a protective barrier that prevents immune recognition Signup and view all the answers

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

They are highly resistant to harsh environmental conditions Signup and view all the answers