Key Idea.
Section 1
The Body Hosts a Microbiome
The human body is more than just a single biological entity; it is also a living environment. It provides a habitat for a massive and complex community of tiny living things.
Together, all the microorganisms living in and on the human body form a system known as the human microbiome. This is not a random collection but a structured community that exists within every person, functioning like a hidden, bustling city of tiny life.
Section 2
Microorganisms Form a Massive Community
The human microbiome is incredibly large in scale. It contains approximately 100 trillion individual microorganisms living together. This number is vast, often outnumbering the human cells in the body.
While the microbiome includes various types of microbes, the majority of this population consists of different types of bacteria. These single-celled organisms act as the primary citizens of this internal ecosystem, interacting with each other and with the human host.
Section 3
The Gut Sustains a Bacterial Community
The human body acts as a host by providing essential resources to these microorganisms. The gut, in particular, offers a warm, safe physical space for bacteria to live.
In addition to space, the gut supplies a constant source of food. Bacteria consume nutrients found in what a person eats. By providing both food and space, the human body allows this bacterial community to survive and thrive.
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Section 1
The Body Hosts a Microbiome
The human body is more than just a single biological entity; it is also a living environment. It provides a habitat for a massive and complex community of tiny living things.
Together, all the microorganisms living in and on the human body form a system known as the human microbiome. This is not a random collection but a structured community that exists within every person, functioning like a hidden, bustling city of tiny life.
Section 2
Microorganisms Form a Massive Community
The human microbiome is incredibly large in scale. It contains approximately 100 trillion individual microorganisms living together. This number is vast, often outnumbering the human cells in the body.
While the microbiome includes various types of microbes, the majority of this population consists of different types of bacteria. These single-celled organisms act as the primary citizens of this internal ecosystem, interacting with each other and with the human host.
Section 3
The Gut Sustains a Bacterial Community
The human body acts as a host by providing essential resources to these microorganisms. The gut, in particular, offers a warm, safe physical space for bacteria to live.
In addition to space, the gut supplies a constant source of food. Bacteria consume nutrients found in what a person eats. By providing both food and space, the human body allows this bacterial community to survive and thrive.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter