From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask. [2020]
and water vapor at 800°C
and water vapor at 800°C
and water vapor at 600°C
and water vapor at 600°C
(1)
In 1953, S.L. Miller, an American scientist created similar conditions in a laboratory scale. He created electric discharge in a closed flask containing and water vapour at 800°C and observed formation of amino acids.
Which of the following is the correct sequence of events in the origin of life? [2016]
I. Formation of protobionts
II. Synthesis of organic monomers
III. Synthesis of organic polymers
IV. Formation of DNA-based genetic systems
I, II, III, IV
I, III, II, IV
II, III, I, IV
II, III, IV, I
Following are the two statements regarding the origin of life. [2016]
(A) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(B) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct?
Both (A) and (B) are correct.
Both (A) and (B) are false.
(A) is correct but (B) is false.
(B) is correct but (A) is false.
