Levels of Organization

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What is an ecosystem?

Back

A biological community that includes various species and their physical environment, consisting of both biotic and abiotic factors.

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What is an organ?

Back

A group of tissues with similar functions that work together to perform a specific task.

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What is the Levels of Organization?

Back

A hierarchical structure that includes: Atom → molecule → organelle → cell → tissue → organ → system → organism → population → community → ecosystem → biosphere.

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What is an organism?

Back

Any single living individual, which can refer to a human, animal, plant, protista, bacteria, or fungi.

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What is a molecule?

Back

The smallest unit of a compound consisting of two or more atoms bonded together.

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What is a community in biological terms?

Back

A group of different species living together in a particular area.

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What is a population?

Back

A group of individuals of the same species living in a specific area.

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What is a cell?

Back

The basic unit of life that makes up all living organisms.

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What are tissues?

Back

Groups of similar cells that work together to perform a specific function.

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What is a biosphere?

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The global sum of all ecosystems; the zone of life on Earth.