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.
Related Questions
Given below some major events in the early history of life
I. First heterotrophic prokaryotes
II. First eukaryotes
III. First autotrophic prokaryotes
IV. First animals
Choose the correct sequence of these evolutionary events
IV, III, II, I
I, III, II, IV
I, II, III, IV
IV, I, II, III
Which of the following was formed in S Miller’s experiment?
Amino acids
Nucleic acids
UV radiations
Microspheres
Early Greek thinkers thought units of life called
Spores
Panspermia
Gamets
Sperms
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
…A… of Russia and …B…. of England proposed that the first form of life could have come from …C… non-living organic molecule. Choose the right option for A, B and C to compete the given NCERT statement
A-Oparin, B-Haldane, C-Post-existing
A-Haldane, B-Oparin, C-Post-existing
A-Oparin, B-Haldane, C-Pre-existing
A-Haldane, B-Oparin, C-Pre-existing
Which of the following was absent in the atmosphere at the time of origin of life ?
Which of the following gases was likely NOT abundant in the early Earth's atmosphere?
Methane
Ammonia
Water vapor
Oxygen
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 amino acid was not found to be synthesized in Miller’s experiment?
Glycine
Aspartic acid
Glutamic acid
Alanine
