The Three Domains in the Woese System of Classification Are

question 44

Multiple Choice

The three domains in the Woese system of classification are

• A) Bacteria, Animalia, and Plantae.
• B) Fungi, Protista, and Animalia.
• C) Archaea, Eukarya, and Protista.
• D) Monera, Bacteria, and Eukarya.
• E) Archaea, Bacteria, and Eukarya.

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Definitions:

Hydrogen

The lightest and most abundant element in the universe, consisting of one proton and one electron, and widely used in chemical reactions and as a potential clean energy source.

Microglia

Specialized glial cells in the brain and spinal cord that act as macrophages, cleaning up debris and dead cells.

Immune System

The body's defense system against infections, diseases, and foreign substances, comprised of various organs, cells, and proteins.

Astrocytes

Star-shaped glial cells in the brain and spinal cord involved in physical support, removal of debris, and transport of nutrients to neurons.