3 years ago

What were the first single-celled organisms like?

1 answer:

5 0

Answer:

The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.

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What is the correct clases for this drugs Promethazine heelp me please

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Answer: Please refer to:

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If the membrane potential at the axon hillock becomes subthreshold an action potential will be fired.

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