01.B BIO, HN Hierarchy of Life (PART B)

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13 Terms

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Atom

Smallest unit of matter that retains the properties of an element

<p>Smallest unit of matter that retains the properties of an element</p>
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Molecules

Groups of two or more atoms held together by chemical bonds

<p>Groups of two or more atoms held together by chemical bonds</p>
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Macromolecules

Four main classes of large biological molecules (carbohydrates, lipids, proteins, nucleic acids)

<p>Four main classes of large biological molecules (carbohydrates, lipids, proteins, nucleic acids)</p>
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Cell

Basic unit of life

<p>Basic unit of life</p>
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Tissue

A group of similar cells that perform the same function.

<p>A group of similar cells that perform the same function.</p>
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Organ

A collection of tissues that carry out a specialized function of the body

<p>A collection of tissues that carry out a specialized function of the body</p>
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Organ system

Group of organs that work together to perform a specific function

<p>Group of organs that work together to perform a specific function</p>
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Organism

A living thing

<p>A living thing</p>
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Population

A group of individuals of the same species that live in the same area.

<p>A group of individuals of the same species that live in the same area.</p>
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Community

A group of interdependent organisms inhabiting the same region and interacting with each other

<p>A group of interdependent organisms inhabiting the same region and interacting with each other</p>
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Ecosystem

A biological community of interacting organisms and their physical environment.

<p>A biological community of interacting organisms and their physical environment.</p>
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Biome

A group of ecosystems with similar climates and organisms

<p>A group of ecosystems with similar climates and organisms</p>
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Biosphere

Earth

<p>Earth</p>