Question

Where did cells come from?

Answer 1

Cells

1. The cells are the smallest living units that can survive on their own and make up all the tissues and living organisms.
2. The first cell existed about 3.5 billion years ago and is called the LUCA or the Last Universal Common Ancestor.
3. These cells were spontaneously formed from self-replicating RNA molecules enclosed in a phospholipid membrane.
4. They did not have membrane-bound organelles.
5. Electric sparks, when discharged in a mixture of methane, ammonia, and hydrogen gases, along with water, led to the formation of different organic molecules and amino acids.
6. These served as basic raw materials that helped the first living cell form.