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Fossil Evidence Indicates That Prokaryotic Cells First Existed on the Earth

question 52

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Fossil evidence indicates that prokaryotic cells first existed on the Earth at least


Definitions:

Vestibular Organ

is the sensory system located in the inner ear that helps control balance and eye movements.

Cochlea

The coiled structure in the inner ear that contains the basilar membrane.

Olfactory Receptor Neurons

Specialized nerve cells located in the nasal cavity that detect chemical substances in the air, leading to the sense of smell.

Olfactory Epithelium

A mucous membrane at the top of the nasal cavity; contains the olfactory receptor neurons that respond to airborne molecules called odorants.

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