Campbell Biology (11th Edition)
Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 27.6, Problem 3CC
Summary Introduction

To explain: How your diet affects the prokaryotic species that live in your digestive tract.

Concept introduction:

Human digestive tract inhabits around 500-1000 types of bacteria such as Bifidobacterium, Lactobacillus, Escherichia, Clostridium, Bacteroides, and so on. These bacteria produce various bioactive compounds, help in breaking down the food components and producing essential vitamins which impact the human health. A major change in the composition may have a negative influence on health; therefore a balance in the microbiota is necessary.

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. Which of the following prokaryotic kingdoms is characterized by the absence of a nucleus, the absence of histone proteins, the presence of fatty acids ester-linked to glycerol in their G-3-P cell membrane, and the presence of enzymes for constructing a peptidoglycan cell wall? kingdom Archaeobacteria kingdom Animalia kingdom Fungi kingdom Plantae kingdom Eubacteria
In the geologic time scale, there is a large delay between the evolution of photosynthetic bacteria and the increase in atmospheric oxygen. This delay is accounted for by the large amount of iron in the oceans and crust of early Earth O predators of early photosynthetic bacteria that reduced population sizes lead in the oceans and crust of early Earth O holes in the atmosphere of early Earth that allowed oxygen to escape
Which of the following can prokaryotes not do? (a) communicate with each other about environmental conditions (b) reproduce sexually (c) live in extreme environments, including high salt, high temperature, and high atmospheric pressure (d) share DNA with other prokaryotes (e) double in population size two or more times an hour

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Campbell Biology (11th Edition)

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