Information molecule to get evolved first on the primitive earth was
Protein
DNA
RNA
All of these
Related Questions
Which one of the following amino acid was not found to be synthesized in Miller’s experiment?
Glycine
Aspartic acid
Glutamic acid
Alanine
According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?
Methane
Oxygen
Hydrogen
Water vapour
Arrange the following steps in the origin of life in the correct chronological order:
I. Synthesis of organic polymers
II. Formation of protobionts
III. Formation of DNA-based genetic systems
IV. Synthesis of organic monomers
I, II, III, IV
IV, I, II, III
II, III, I, IV
III, I, II, IV
The concept that the species have changed over long period of time is known as
Ecology
Embryology
Spontaneous generation
Organic evolution
The 'hot dilute soup' proposed by Haldane and Oparin as a crucial stage in the origin of life faced a major challenge. What was this primary obstacle?
The absence of a continuous source of energy.
The presence of an oxidizing atmosphere.
The lack of a mechanism to concentrate the organic molecules to facilitate polymerization.
The instability of amino acids at high temperatures.
The …A… from the sun broke up water into hydrogen and oxygen and the …B… escaped. Oxygen combined with ammonia and methane to form …C… . CO and others. The ozone layer was formed. As it cooled, the water vapour fell as rain, to fill all the depressions and form …D… Choose the correct option for A,B,C and D to complete the given paragraph, to NCERT textbook
A-IR rays, B-lighter , C-water, D-oceans
A-UV rays, B-lighter , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
The first cell like structure was appeared in
Air
Mountain
Ocean
Soil
The abiogenesis occurred about how many billion years ago?
1.2 billion
1.5 billion
2.5 billion
3.5 billion
Which of the following best describes the significance of coacervates in the context of the origin of life?
They are fossilized evidence of the earliest life forms on Earth.
They prove that RNA was the primary genetic material in early life.
They demonstrate how membrane-bound compartments, crucial for cellular life, could have arisen spontaneously from organic molecules.
They explain the mechanism by which the first self-replicating molecules were formed.
Which is still a favourite idea for some astronomers
Spores
Panspermia
Gamets
Sperms
