The WBCs (white blood cells) are produced from the stem cells. The white blood cells are less in number than the red blood cells. White blood cells are also called as leukocytes. These cells remove toxins, wastes, and damaged cells. They also defend human body from the foreign pathogens.

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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 20, Problem 10RFT

Summary Introduction

Introduction:

The WBCs (white blood cells) are produced from the stem cells. The white blood cells are less in number than the red blood cells. White blood cells are also called as leukocytes. These cells remove toxins, wastes, and damaged cells. They also defend human body from the foreign pathogens.

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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 20, Problem 10RFT

Summary Introduction

Introduction:

The WBCs (white blood cells) are produced from the stem cells. The white blood cells are less in number than the red blood cells. White blood cells are also called as leukocytes. These cells remove toxins, wastes, and damaged cells. They also defend human body from the foreign pathogens.

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Answer 3

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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 20, Problem 10RFT

Summary Introduction

Introduction:

The WBCs (white blood cells) are produced from the stem cells. The white blood cells are less in number than the red blood cells. White blood cells are also called as leukocytes. These cells remove toxins, wastes, and damaged cells. They also defend human body from the foreign pathogens.

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Check out a sample textbook solution

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Answer 4

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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 20, Problem 10RFT

Summary Introduction