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
The first life on earth consists of
Single-celled prokaryotes
Multicellular eukaryotes
Small mammals
Complex plants
What did Miller obtained from his experiment?
Amino acid
Organic compounds
Peptide
All of these
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
Which of the following was formed in S Miller’s experiment?
Amino acids
Nucleic acids
UV radiations
Microspheres
Artificial synthesis of ATP, porphyrin and nucleotides was detained by
Abundance of inorganic precursors in the environment
Lack of knowledge about the structure of biomolecules and the pathways for their synthesis
Presence of oxygen in the early Earth's atmosphere
Easy availability of energy sources like UV radiation and lightning
Life appeared ________ years after the formation of earth
4.5 billion
1 billion
500 million
2 billion
Which of the following is a critical argument against the theory of panspermia related to the origin of life on Earth?
Meteorites have been found to contain organic molecules.
Life on Earth shares a common genetic code.
Microbial life has been found in extreme environments on Earth.
The harsh conditions of space, including radiation and extreme temperatures, would likely destroy any known life forms during interstellar travel.
Synthesis of amino acids to prove that amino acids were formed in primitive ocean was experimentally proved by
Sydney Fox
Oparin
Haldane
Stanley Miller
Arrange the following steps in the origin of life in the correct chronological order:
I. Synthesis of organic polymers
II. Formation of protobionts
III. Formation of DNA-based genetic systems
IV. Synthesis of organic monomers
I, II, III, IV
IV, I, II, III
II, III, I, IV
III, I, II, IV
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
