To tell: Why viruses seem to alive and yet not alive. Introduction: Dmitri Ivanowski, a Russian microbiologist, discovered viruses and called them as non-filterable agents. To prove his experiment he took the plant sap from an infected tobacco plant, filtered it, and passed to a healthy tobacco plant. The infectious plant sap successfully infected the healthy plant. He termed the viruses as non-filterable agents; it is a first discovery of viruses. In 1935, Wendell Stanley successfully isolated the tobacco mosaic virus.

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Answer 1

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 13, Problem 6TMW

Summary Introduction

To tell:

Why viruses seem to alive and yet not alive.

Introduction:

Dmitri Ivanowski, a Russian microbiologist, discovered viruses and called them as non-filterable agents. To prove his experiment he took the plant sap from an infected tobacco plant, filtered it, and passed to a healthy tobacco plant. The infectious plant sap successfully infected the healthy plant. He termed the viruses as non-filterable agents; it is a first discovery of viruses. In 1935, Wendell Stanley successfully isolated the tobacco mosaic virus.

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Answer 2

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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 13, Problem 6TMW

Summary Introduction

To tell:

Why viruses seem to alive and yet not alive.

Introduction:

Dmitri Ivanowski, a Russian microbiologist, discovered viruses and called them as non-filterable agents. To prove his experiment he took the plant sap from an infected tobacco plant, filtered it, and passed to a healthy tobacco plant. The infectious plant sap successfully infected the healthy plant. He termed the viruses as non-filterable agents; it is a first discovery of viruses. In 1935, Wendell Stanley successfully isolated the tobacco mosaic virus.

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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 13, Problem 6TMW

Summary Introduction

To tell:

Why viruses seem to alive and yet not alive.

Introduction:

Dmitri Ivanowski, a Russian microbiologist, discovered viruses and called them as non-filterable agents. To prove his experiment he took the plant sap from an infected tobacco plant, filtered it, and passed to a healthy tobacco plant. The infectious plant sap successfully infected the healthy plant. He termed the viruses as non-filterable agents; it is a first discovery of viruses. In 1935, Wendell Stanley successfully isolated the tobacco mosaic virus.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

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 13, Problem 6TMW

Summary Introduction