12 Questions
What was the primary composition of the first atmosphere on Earth?
Thick with water vapour, along with various compounds released by volcanic eruptions
What process led to the formation of the ocean on early Earth?
Water vapour condensing due to cooling of the Earth
Which of the following factors favoured the synthesis of organic molecules essential for the origin of life?
The reducing atmosphere, volcanic eruptions, and hydrothermal vents
What is the age of the fossils of micro-organisms that provide direct evidence for life on early Earth?
3.5 billion years old
What is the term for the process by which simple organic molecules combine to form macromolecules?
Polymerization
Who proposed the biochemical evolution theory?
Oparin and Haldane
What is the primary mechanism that facilitated the formation of small organic molecules from inorganic molecules on early Earth?
Atmospheric conditions
What is the probable location where the first organic compounds and cells may have arisen?
Warm alkaline vents
What is the result of the polymerization of small organic molecules?
Formation of organic macromolecules
What is the role of montmorillonite clay in the origin of life?
It increases the rate of vesicle self-assembly
What is the significance of the fourth stage in the sequence of events leading to the formation of first cells?
It enables the inheritance of traits
What is the term used to describe the process of organic macromolecules being packed into membranes to form protocells?
Vesicle formation
Explore the origins of our planet and the conditions that existed before life emerged. Learn about the formation of the Earth, its early atmosphere, and the role of volcanic eruptions in shaping our planet's early environment.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
