If cells have to satisfy some basic needs such as oxygen, water, nutrients, waste removal, and...

Question:

If cells have to satisfy some basic needs such as oxygen, water, nutrients, waste removal, and maintaining proper homeostasis, how did the first cells survive during the process of abiogenesis?

Abiogenesis:

Abiogenesis is the process by which a living organism arose out of non-living things. Current consensus is that this happened on Earth around 3.5 billion years ago, with it taking several billion years to evolve into life we know it today.

Answer and Explanation:

Current thinking is that abiogenesis occurred near deep sea vents, where minerals are abundant for many different biological processes, and the temperature and oxygen saturation being high enough for life to potentially arise. RNA was probably the first biological molecule, being that nucleotides have shown the potential to arise through natural processes in the early Earth. Furthermore, RNA has the ability to form "ribozymes", carrying out enzymatic reactions including potentially replicating itself. This RNA probably got concentrated in natural rock formations near the deep-sea vents where some form of homeostasis was naturally occurring, and gradually from there progressed, assimilating itself into fatty acid bilayers that also have the potential to form naturally. From here, we have the primordial cell, from which more complicated systems for homeostasis can arise when it migrates away from systems that naturally maintain homeostasis.


Learn more about this topic:

Loading...
Abiotic Synthesis & the Origin of Life

from College Biology: Help and Review

Chapter 18 / Lesson 61
15K

Related to this Question

Explore our homework questions and answers library