The abiogenesis occurred about how many billion years ago?
1.2 billion
1.5 billion
2.5 billion
3.5 billion
Related Questions
Which stage in the origin of life is characterized by the aggregation of organic polymers into membrane-bound structures?
Synthesis of organic monomers
Synthesis of organic polymers
Formation of protobionts
Formation of DNA-based genetic systems
A microsphere is a …A… collection of organic macromolecules with double layered outer boundary. The term microsphere was given by …B…
Complete the given statement by choosing correct options for A and B with reference to NCERT textbook
A-non-living, B-Sydney Fox
A-living, B-Oparin
A-non-living, B-Haldane
A-living, B-Altman
Which units are used to measure the stellar distances
Metres
Light years
According to the heterotroph hypothesis, the first life on the earth was able to
Synthesis its food from inorganic compounds
Feed upon carbohydrates produced by autotrophs
Feed upon available nutrients in the environment
Carry on photosynthesis instead of respiration
The first non-cellular form of life could have originated
3 billion years back
2 billion years back
4 billion years back
1 billion years back
Life appeared
500 million years after the formation of earth
600 million years after the formation of earth
Four billion years back
Both (1) and (3)
Origin of life as a result of chemical evolution has been properly explained by or the most logical biochemical theory of origin of life has been given by
Oparin and Haldane
Miller and Urey
RNA world hypothesis
Theory of Spontaneous Generation
The idea that the life originates from pre-existing life is referred as
Biogenesis theory
Special creation theory
Abiogenesis theory
Extraterrestrial theory
What happened to present in the primary atmosphere during its conversion to the secondary atmosphere?
It got oxidized to and water
It was absorbed by photoautotrophs
Most of it got oxidized to nitrogen oxides
It concentration was decreased due to formation
Which of the following is the correct sequence of events in the origin of life?
I. Formation of protobionts
II. Synthesis of organic monomers
III. Synthesis of organic polymers
IV. Formation of DNA-based genetic systems
II, III, IV, I
II, III, IV
I, III, II, IV
II, III, I, IV
