48
3.
Energy source
Life needs an energy source for metabolism.
The story of Origin of life
Study of zircon grains in Western Australia suggests
that water was present as early as 4.4 billion years
back on Earth.
The story of Origin
of life
Study of zircon grains in Western Australia suggests
that water was present as early as 4.4 billion years
back on Earth.
Amino Acids to form Proteins:
There are three possible sources for organic molecules
such as amino acids:
1.
Urey-Miller Experiment –
Image Source
http://digitaljournal.com/image/43968
Urey-Miller Experiment – This has been one of
the earliest experiments conducted to test the idea
that sun-light driven chemical reactions on primitive Earth might have produced the building blocks
of life. In the experiment a flask of water was heated
to produce water vapour. The water vapour was then
passed through another flask which contained gases
ICY SCIENCE | QTR 1 2014