187
Question
The evolution from non-cellular forms to first simple cellular form of life is termed as
The evolution from non-cellular forms to first simple cellular form of life is termed as
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Solution
The correct option is B biogenesis
Chemical evolution tells us about the formation of organic molecules from inorganic molecules which were present in the primitive earth. High temperature, volcanic eruptions, lightning led to the formation of simple organic molecules like amino acids, lipids and nucleotides from the simple inorganic molecules.
The simple organic molecules combined or aggregated to form large complex organic molecules (macromolecules or polymers) in ocean water. These macromolecules organised themselves as giant molecules of RNA, proteins, polysaccharides, etc. This is how the first non-cellular form of life came into being around 3 billion years ago.
The evolution starting from non-cellular forms to cellular form of life is known as biogenesis. It explains to us how cells originated during evolution.
The theory of spontaneous generation states that life came out of non-living matter spontaneously. Scientists like Von Helmont claimed that formation of mice occurs in 21 days, if a sweat soaked dirty shirt is kept in a wheat barn. Other popular beliefs of this theory were that dirty sewers gave rise to rats, wet soil led to creation of toads, meat broth gave rise to flies etc.
Chemical evolution tells us about the formation of organic molecules from inorganic molecules which were present in the primitive earth. High temperature, volcanic eruptions, lightning led to the formation of simple organic molecules like amino acids, lipids and nucleotides from the simple inorganic molecules.
The simple organic molecules combined or aggregated to form large complex organic molecules (macromolecules or polymers) in ocean water. These macromolecules organised themselves as giant molecules of RNA, proteins, polysaccharides, etc. This is how the first non-cellular form of life came into being around 3 billion years ago.
The evolution starting from non-cellular forms to cellular form of life is known as biogenesis. It explains to us how cells originated during evolution.
The theory of spontaneous generation states that life came out of non-living matter spontaneously. Scientists like Von Helmont claimed that formation of mice occurs in 21 days, if a sweat soaked dirty shirt is kept in a wheat barn. Other popular beliefs of this theory were that dirty sewers gave rise to rats, wet soil led to creation of toads, meat broth gave rise to flies etc.
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