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
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.
Early Greek thinkers thought units of life called
Spores
Panspermia
Gamets
Sperms
Earth originated approximately
4500 million years ago
3600 million years ago
Between 1600-2600 million years ago
2.5 million years ago
Synthesis of amino acids to prove that amino acids were formed in primitive ocean was experimentally proved by
Sydney Fox
Oparin
Haldane
Stanley Miller
The RNA world hypothesis proposes that RNA, not DNA, was the primary genetic material in early life. Which characteristic of RNA makes it a more plausible candidate for this role compared to DNA?
Double-stranded structure
Higher stability
Catalytic activity
Presence of thymine
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
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
Which group of organisms is believed to be evolved first on earth?
Arthropods
Coelenterates
Protozoans
Reptiles
The first life on earth consists of
Single-celled prokaryotes (bacteria and archaea)
Multicellular eukaryotes (plants and animals)
Viruses
Complex proteins