Wow! I love that question. Let's chat about this
for a while.
The first thing we need to figure out
is the definition of a cell. Well, most scientists
think of a cell is a non-random (meaning there is
a pattern or purpose) collection of organic
molecules surrounded by a bag, called the
membrane. To answer your questions, we have to
go to Western Australia. In Western Australia,
there are these mounds of bacteria called
stromatolite . They are really, really
Not too long ago, scientists found
"fossils" of single cells in these
mounds, and it is clear from the radioactivity
(all things have a small amount of harmless
radioactivity that is great for determining the
age of something) that the cells were 3.5 million
years old. WOW!
Can you tell me the difference
between a prokaryote and eukaryote? Which is older
do you think? Good luck!