The protists are the first eukaryotic cells evolved. The protists are formed by the endosymbiosis of aerobic cells and cyanobacteria in other cells and establishing the mutual relationship between them. The mitochondria are the cellular organelles that provide the cellular energy in the form of ATP (adenosine triphosphate).

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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 21, Problem 12A

Summary Introduction

Introduction:

The protists are the first eukaryotic cells evolved. The protists are formed by the endosymbiosis of aerobic cells and cyanobacteria in other cells and establishing the mutual relationship between them. The mitochondria are the cellular organelles that provide the cellular energy in the form of ATP (adenosine triphosphate).

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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 21, Problem 12A

Summary Introduction

Introduction:

The protists are the first eukaryotic cells evolved. The protists are formed by the endosymbiosis of aerobic cells and cyanobacteria in other cells and establishing the mutual relationship between them. The mitochondria are the cellular organelles that provide the cellular energy in the form of ATP (adenosine triphosphate).

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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 21, Problem 12A

Summary Introduction

Introduction:

The protists are the first eukaryotic cells evolved. The protists are formed by the endosymbiosis of aerobic cells and cyanobacteria in other cells and establishing the mutual relationship between them. The mitochondria are the cellular organelles that provide the cellular energy in the form of ATP (adenosine triphosphate).

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Check out a sample textbook solution

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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 21, Problem 12A

Summary Introduction