Which is still a favourite idea for some astronomers
Spores
Panspermia
Gamets
Sperms
Related Questions
Which is still a favourite idea for some astronomers
Spores
Panspermia
Gamets
Sperms
The abiogenesis occurred about how many billion years ago?
1.2 billion
1.5 billion
2.5 billion
3.5 billion
Origin of life as a result of chemical evolution was properly explained by
I. Fox II. Oparin
III. Wateson IV. Haeckel
V. Mendel VI. Crick
Choose the correct option
I and II
III and IV
V and VI
Only II
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)
Proteinoids are
Carbohydrate structure consisting of branched sugars
Fatty acid structure consisting of branched fatty molecules
Protein structure consisting of branched amino acids
Protein structure consisting of unbranched amino acids
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
Protocells are considered a key step in the origin of life. Which of the following is NOT a characteristic typically associated with protocells?
Membrane-bound compartments
Simple metabolic activity
Ability to undergo fission
Developed DNA replication mechanisms
According to one of the most accepted theory, the earth atmosphere before any life had originated consists of and
None of these
Information molecule to get evolved first on the primitive earth was
Protein
DNA
RNA
All of these
Big-Bang theory attempts to explain the origin of
Earth
Solar-system
Universe
Contenents
