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
Related Questions
According to the current understanding of abiogenesis, which of the following represents the likely order of events leading to the first cells?
Polymerization → Synthesis of monomers → Protobiont formation → DNA-based genetic systems
Synthesis of monomers → Polymerization → Protobiont formation → DNA-based genetic systems
Protobiont formation → Synthesis of monomers → Polymerization → DNA-based genetic systems
DNA-based genetic systems → Protobiont formation → Polymerization → Synthesis of monomers
The sequence of origin of life could be
Organic materials → inorganic materials → colloidal aggregate → eobiont → cell
Inorganic materials → organic materials → colloidal aggregate → eobiont → cell
Inorganic materials → organic materials → eobiont → cell → colloidal aggregate
Organic materials → inorganic materials → eobiont → cell → colloidal aggregate
Swan-necked flask experiment proved
Biogenesis
Abiogenesis
Gene therapy
Both (a) and (b)
The abiogenesis occurred about how many billion years ago?
1.2 billion
1.5 billion
2.5 billion
3.5 billion
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.
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
They could maintain an internal environment different from their surroundings
They were able to grow in size by taking up material from the surroundings
They showed budding or splitting to give rise to similar smaller structures
They had a defined, organized, and heritable mechanism of reproduction
For a long time it was believed that life came out of decaying and rotting matter like straw mud, etc.
This was the theory of
Catastrophism
Abiogenesis
Panspermia
Chemogeny
According to abiogenesis, life originated from
Non-living
Pre-existing life
Chemicals
Extra-terrestrial matter
For a long time it was believed that life came out of decaying and rotting matter like straw mud, etc.
This was the theory of
Catastrophism
Abiogenesis
Panspermia
Chemogeny
The idea that the life originates from pre-existing life is referred as
Biogenesis theory
Special creation theory
Abiogenesis theory
Extraterrestrial theory
