The reason why parasites do not usually kill their host. Concept introduction: Protozoa are eukaryotic complex organisms. They are single-celled, motile, and lack the cell wall. They may occur within the life cycle of a single type. Many protozoans have the ability to live independently, some rely on dead organic matters, and others are parasites that live in or on another host.

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Answer 1

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 6, Problem 6.2ATA

Summary Introduction

To explain: The reason why parasites do not usually kill their host.

Concept introduction: Protozoa are eukaryotic complex organisms. They are single-celled, motile, and lack the cell wall. They may occur within the life cycle of a single type. Many protozoans have the ability to live independently, some rely on dead organic matters, and others are parasites that live in or on another host.

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Answer 2

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 6, Problem 6.2ATA

Summary Introduction

To explain: The reason why parasites do not usually kill their host.

Concept introduction: Protozoa are eukaryotic complex organisms. They are single-celled, motile, and lack the cell wall. They may occur within the life cycle of a single type. Many protozoans have the ability to live independently, some rely on dead organic matters, and others are parasites that live in or on another host.

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Answer 3

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 6, Problem 6.2ATA

Summary Introduction

To explain: The reason why parasites do not usually kill their host.

Concept introduction: Protozoa are eukaryotic complex organisms. They are single-celled, motile, and lack the cell wall. They may occur within the life cycle of a single type. Many protozoans have the ability to live independently, some rely on dead organic matters, and others are parasites that live in or on another host.

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Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 6, Problem 6.2ATA

Summary Introduction