Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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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 26, Problem 3U

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Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000

Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8

The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for? 3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2

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 26, Problem 3U

Summary Introduction

Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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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 26, Problem 3U

Summary Introduction

Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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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 26, Problem 3U

Summary Introduction

Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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Answer 5

Chapter 26, Problem 3U

Summary Introduction

Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

Answer 6

Chapter 26, Problem 3U

Summary Introduction

Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

Answer 7

Chapter 26, Problem 3U

Summary Introduction

Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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Answer 11

Ch. 26.1 - Prob. 1LO Ch. 26.1 - Prob. 2LO Ch. 26.2 - Prob. 1LO Ch. 26.2 - Prob. 2LO Ch. 26.3 - Prob. 1LO Ch. 26.3 - Describe how viruses can contribute DNA to their...Ch. 26.4 - Describe the differences between acute and...Ch. 26.4 - Prob. 2LO Ch. 26.4 - Prob. 3LO Ch. 26.5 - Prob. 1LO

Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

Solution Summary: The author explains that viruses are intracellular obligate parasites that require a host cell to proliferate. They possess either DNA or RNA genome surrounded by the protein capsid.

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Introduction: Viruses are intracellular obligate parasites that require a host cell to proliferate. They take over the machinery of the host cell thatthey infect and reproduce within the host cell. They possess either DNA or RNA genome that is surrounded by the protein capsid.

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