1 History of the Life in the Universe copy 2

1 History of the Life in the Universe copy 2 - THE HISTORY...

Info iconThis preview shows pages 1–18. Sign up to view the full content.

View Full Document Right Arrow Icon
THE HISTORY AND MYSTERY OF LIFE IN THE UNIVERSE !
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
“We are the subjects of an experiment, how singular.” Thoreau
Background image of page 2
WHERE DID WE COME FROM? HOW DID WE GET HERE? WHAT ARE WE? WHAT IS EVERYTHING? WHY ARE WE HERE? WHAT ARE WE SUPPOSED TO DO? WHAT HAPPENS WHEN WE DIE? THE BIG QUESTIONS! MAN IN THE UNIVERSE
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
THE BIG BANG 12 BILLION YEARS AGO Besides matter, time and space were created.
Background image of page 4
Most of the matter was simple hydrogen, one proton and one electron. Due to gravity this matter coalesced and formed stars. Nuclear fusion reactions within stars create the elements such as carbon, nitrogen, oxygen, etc which of which our living systems are made.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
At a certain stage in a stars life a supernova may occur spewing out the heavier elements into the universe.
Background image of page 6
With the spread of the supernovas, heavier diverse elements spread over millions of years.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
“We are stardust million-year-old-carbon We are golden . ..” Woodstock by Joni Mitchell
Background image of page 8
Where are we in Time (Billions of years) Big Bang 0 9 8 Present Unicellular life begins Earth formed 12 Multicellular life begins 11 10 First Vertebrates Man
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Man has only been on the planet earth for around 6 million years having evolved into his present state from Australopithecenes. 6 million years represents 0.15 % of the total existence of the planet! It’s conceivable that with global warming, war or just natural changes, man will become extinct representing only a brief instant of time in the planets history! Hmmmm. ....... Some Perspectives . ..
Background image of page 10
3 billion years ago when life began on earth, the earth was a violent place with volcanic eruptions, winds, lightning and constant torrential rains and storms.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Organic molecules (Carbon based) were necessary as building blocks of life. This apparatus simulates the earth’s initial conditions
Background image of page 12
What were the results? The molecules in red are important building blocks of present day macromolecules constituting living cells such as amino acids for proteins, etc.
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Macromolecules From these basic organic molecules (carbon based) extremely large molecules formed. They were polymers . Long strings of basic units strung together like pearls on a string.
Background image of page 14
Eg. - Proteins - long strings of 20 kinds of amino acids with huge molecular weights! 100,000 or more! Compared with NaCl (salt) which is 60 something. PROTEINS
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Another important macromolecule is a polynucleotide made of long strings of nucleotides (DNA and RNA). Nucleotides can act as templates for themselves and proteins and therefore information storage forms . POLYNUCLEOTIDES
Background image of page 16
Macromolecules are essential for living systems. WHY
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 18
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/30/2011 for the course ANATOMY 3504 taught by Professor Steffens during the Spring '11 term at St. John's.

Page1 / 50

1 History of the Life in the Universe copy 2 - THE HISTORY...

This preview shows document pages 1 - 18. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online