Some advantages of an exoskeleton. Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

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Answer 1

Question

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

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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

Question

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

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Answer 3

Question

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

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Answer 4

Question

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

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Answer 5

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Answer 6

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Answer 7

Chapter 40.2, Problem 2C

Summary Introduction

To describe: Some advantages of an exoskeleton.

Introduction: Exoskeleton is a hard layer of protective material, around the outer epithelial covering of some animals. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Answer 8

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Answer 9

Summary Introduction

To describe: Some disadvantages of an exoskeleton.

Introduction: The hard layer of protective material, around the outer epithelial covering of some animals, is called its exoskeleton. It may exist as a shell in some animals such as crabs and crustaceans. Exoskeletons are made of chitin or calcium carbonates which are very strong and hard materials that give strength to organisms and protect them from the environment. Animals having exoskeletons often do not have a backbone.

Answer 10

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Answer 13

Ch. 40.1 - Compare the functions of the epithelial coverings...Ch. 40.1 - Prob. 2LO Ch. 40.1 - Prob. 1C Ch. 40.1 - Prob. 2C Ch. 40.1 - Prob. 3C Ch. 40.1 - Prob. 4C Ch. 40.2 - Compare the structure and functions of different...Ch. 40.2 - Describe the main divisions of the vertebrate...Ch. 40.2 - Prob. 5LO Ch. 40.2 - Prob. 6LO

Solution Summary: The author explains the advantages and disadvantages of an exoskeleton.

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