CSS Zoology Questions & Answers

Q.  Which of the following is likely to have been absent in free form at the time of origin of life:

a. Oxygen
b. Methane
c. Nitrogen
d. Ammonia


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Chemosynthetic bacteria are able to:
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MCQs:  Miller synthesized:
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MCQs:  Carbondioxide of the present atmosphere is entirely produced by:
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MCQs:  Miller synthesized simple amino acids from:
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MCQs:  Nucleoproteins most probably gave the first sign of:
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MCQs:  Oxygen present in the atmosphere has been formed by:
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MCQs:  It can be concluded on the basis of Miller's experiment that:
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MCQs:  Most important condition for the origin of life is presence of:
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MCQs:  Life originated about:
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MCQs:  Louis Pasteur is known for:
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MCQs:  Life originated:
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MCQs:  Which of the following must have evolved in the direction of "Origin of Life":
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MCQs:  Stanley Miller in his classical experiment on formation of amino acids passed an electric discharge in the mixture of:
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MCQs:  Karyon is the basis of differentiation in between:
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MCQs:  In his experiment Stanley Miller was successful to demonstrate the formation of amino acids by passing an electric discharge in a mixture of ammonia, water, hydrogen and:
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MCQs:  True Nucleus is absent in bacteria because:
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MCQs:  According to most accepted theories, the atmosphere of earth before origin of life consisted of a mixture of:
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MCQs:  To prove that organic molecules formed in the primitive ocean were respobsible for origin of life on earth, Millar carried out their synthesis from:
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MCQs:  The hard Liithosphere was studded with volcanic eruptions pouring out hot lava. The Nitrogen and Carbon Atoms of atmosphere formed nitrides and Carbides respectively by reacting with metallic atoms of lava. The hot water vapours of atmosphere and carbides reacted to form Methane and water vapours and metallic nitrides reacted to form Ammonia. This statement regarding origin and evolution of organic compounds is:
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MCQs:  Amino acids, Sugards, Glycerol, Fatty acids, Nitrogen bases etc. formed in the primitive ocean survived because they were neither oxidized nor putrified. The reason were:
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