Microbial Cells First Evolved on Earth Approximately ________ Billion Years

question 44

Multiple Choice

Microbial cells first evolved on Earth approximately ________ billion years ago.

• A) 1.6 to 1.8
• B) 3.8 to 3.9
• C) 5.4 to 5.6
• D) 7.0 to 7.2

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Definitions:

Period

Often refers to a length or span of time in a sequence of events or a specified interval in processes or phenomena.

Neuron

A specialized cell transmitting nerve impulses; a basic building block of the nervous system responsible for processing and transmitting information.

Firing

Firing, in the context of neural activity, refers to the action of neurons when they send an electrical impulse along their axons, a fundamental process for brain communication.

Endorphins

Endorphins are natural pain-relieving chemicals released by the brain during exercise, excitement, pain, and sexual activity, contributing to a sense of well-being.