What Is the Evolutionary Relationship Among Archaea,Bacteria,and Eukarya

question 13

Multiple Choice

What is the evolutionary relationship among Archaea,Bacteria,and Eukarya?

• A) Since Archaea are the most primitive, Archaean ancestors gave rise to bacteria that in turn gave rise to eukaryotes.
• B) All three domains are equally distant from the most primitive common ancestor, a protocell.
• C) Archaea and Eukarya share nucleic acid similarities so Eukarya split off from Archaea.
• D) Bacterial ancestors gave rise to both Archaea and to eukaryotes as two separate side branches.
• E) Archaea ancestors gave rise to both bacteria and to eukaryotes as two separate side branches.

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Definitions:

Taste Receptors

Specialized sensory cells located on the tongue and in the mouth that are responsible for detecting and interpreting tastes.

Sclera

The white, opaque, fibrous outer layer of the eyeball; it provides protection and form.

Cornea

Transparent, anterior portion of the outer layer of the eyeball.

Choroid Coat

A layer of blood vessels and connective tissue between the sclera and retina in the eye, providing oxygen and nutrients to the outer layers of the retina.