Archaeans are a group of prokaryotes that are similar to the eukaryota phylum. The archae includes organisms that are able to survive in extreme environments, like salt, high temperatures, and marshy lands. Unlike bacteria, the archaeans lack a peptidoglycan layer in their cell walls.

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A bacterium has the following characteristics: I. It adheres to the human intestinal lining using a feature that protects it from phagocytes , bacteriophages, and dehydration. II. It can survive being boiled. III. It contains no plasmids and relatively little peptidoglycan. Which of the following characteristics allows this bacteria to survive in a human who is taking penicillin pills? A. gram-negative cell wall B. peptidoglycan in the cell wall C. lipopolysaccharides in the cytoplasm D. long polypeptides in the cell wall

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Chapter 26, Problem 9TYK

Summary Introduction

Introduction:

Archaeans are a group of prokaryotes that are similar to the eukaryota phylum. The archae includes organisms that are able to survive in extreme environments, like salt, high temperatures, and marshy lands. Unlike bacteria, the archaeans lack a peptidoglycan layer in their cell walls.

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