Which of these is considered a likely site for the origin of life?
Volcanic craters
Glaciers
Hydrothermal vents
Deserts
Related Questions
The concept that the species have changed over a long period of time is know as
Ecosystem
Spontaneous generation
Organic evolution
Genetic recombination
Coacervates were experimentally produced by
Sydney Fox
Oparin and Haldane
Miller and Urey
Spallanzani and Needham
Which of the following is NOT a key feature of the Oparin-Haldane theory of the origin of life?
Formation of organic monomers from inorganic gases
Presence of free oxygen in the early atmosphere
Polymerization of monomers to form macromolecules
Coacervates as precursors to the first cells
In the origin of life, microspheres are most primitive protobiont, which have a membrane of
Lipids and proteins
Lipids
Carbohydrates
fats
The gases condensed under β¦Aβ¦ and formed the galaxies of the present day universe. In the solar system of the milky way galaxy, earth was supposed to have been formed about β¦Bβ¦ back. There was no atmosphere β¦Cβ¦ on the earth. Water vapour, β¦Dβ¦ carbon dioxide and ammonia released from molten mass covered the surface.
Choose the correct option for A, B, C and D to complete the given paragraph with reference to NCERT textbook
A-Gravitation, B-4.5 billion years, C-Early, D-Methane
A-Acceleration, B-4.5 billion years, C-Early, D-Methane
A-Acceleration, B-4.5 billion years, C-Early, D-Ethane
A-Gravitation, B-4.5 billion years, C-Early, D-Ethane
The first cellular form of life could have originated
2000 million years back
11000 million years back
1500 million years back
500 million years back
According to one of the most accepted theory, the earth atmosphere before any life had originated consists of and
None of these
Experimental evidence of chemical evolution was given by
Miller
Haldane
Oparin
All of the above
In the early earth, organic acids were produced by the combination of with
Ammonia and methane
Hydrogen
Organic matter
Sulphates and nitrates
According to abiogenesis, life originated from
Non-living
Pre-existing life
Chemicals
Extra-terrestrial matter