Textbook Question
_____ Cooperation is common among microorganisms living in microhabitats.
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Ch. 27 - Microbial Ecology and Microbiomes
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 27, Problem 2
When examining the microbiome of the human intestine, you would expect to find how many bacterial species present?
a. One
b. Three
c. Hundreds
d. Thousands
Verified step by step guidance1
Understand that the human intestinal microbiome is highly diverse, containing a vast number of bacterial species that contribute to digestion, immunity, and overall health.
Recall that studies using advanced sequencing techniques have revealed that the gut microbiome is not limited to just a few species but includes a wide variety of bacteria.
Recognize that the number of bacterial species in the human intestine typically ranges in the hundreds to thousands, reflecting a complex ecosystem.
Compare the answer choices: one species is too few, three species is still very limited, hundreds is plausible, but thousands is more accurate based on current scientific knowledge.
Conclude that the best answer corresponds to the largest diversity, which is thousands of bacterial species present in the human intestine.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Human Intestinal Microbiome Diversity
The human intestine hosts a highly diverse community of microorganisms, primarily bacteria, which play crucial roles in digestion, immunity, and overall health. This diversity includes thousands of different bacterial species, reflecting a complex ecosystem rather than a few dominant types.
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Microbial Species Richness
Species richness refers to the number of different species present in a particular environment. In the human gut, species richness is very high, with studies identifying thousands of bacterial species, highlighting the complexity and variability of the microbiome among individuals.
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Methods for Identifying Microbial Species
Modern techniques like 16S rRNA gene sequencing and metagenomics allow scientists to identify and quantify bacterial species in the gut without culturing them. These methods have revealed the vast number of bacterial species present, far exceeding earlier estimates based on culture-dependent methods.
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Related Practice
Textbook Question
Label the processes of the nitrogen cycle.
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Textbook Question
Biogeochemical cycling involves three primary steps: _____, _____ , and _____.
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Textbook Question
A microbiome is composed of _____.
a. single, pure populations
b. all organisms in a locale
c. all microbes in a location
d. only the bacteria are considered
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Textbook Question
In the environment, nutrients are generally:
a. Limiting
b. Present in excess
c. Stable
d. Artificially induced
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Textbook Question
Nitrogen exists primarily as _____ in the environment.
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