Origin Of Life
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Origin of Life K. Sathasivan
Are we alone?
A. Yes B. No
How do you think life originated on earth? A. B. C. D.
E.
Extraterrestrial aliens brought it Came with meteors from other planets Some superhuman powers created it Chemical from primordial soup combined to make life None of the above
History of Life
Stromatolites
Early prokaryotes
Cyanobacteria fossils
Possible Sources of Life’s Origin
Possible Steps in the Origin of Life Protobionts and Liposomes
Which came first? A. DNA B. RNA C. Protein D. Carbohydrates E. Lipids DNA (Genetic Information) Structural)
RNA
(Information and catalytic)
PROTEIN (Catalytic and
Abiotic RNA Replication
Primitive RNA and Proteins
Which of the following is/are testable hypothesis about origin of life on earth? A. B. C. D.
E.
Extraterrestrial aliens brought it Came with meteors from other planets Some superhuman powers created it Chemical from primordial soup combined to make life None of the above
The Five Kingdom System
Domain Systems
Are we alone?
A. Yes B. No
How do you think life originated on earth? A. B. C. D.
E.
Extraterrestrial aliens brought it Came with meteors from other planets Some superhuman powers created it Chemical from primordial soup combined to make life None of the above
History of Life
Stromatolites
Early prokaryotes
Cyanobacteria fossils
Possible Sources of Life’s Origin
Possible Steps in the Origin of Life Protobionts and Liposomes
Which came first? A. DNA B. RNA C. Protein D. Carbohydrates E. Lipids DNA (Genetic Information) Structural)
RNA
(Information and catalytic)
PROTEIN (Catalytic and
Abiotic RNA Replication
Primitive RNA and Proteins
Which of the following is/are testable hypothesis about origin of life on earth? A. B. C. D.
E.
Extraterrestrial aliens brought it Came with meteors from other planets Some superhuman powers created it Chemical from primordial soup combined to make life None of the above
The Five Kingdom System
Domain Systems
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