Podcast
Questions and Answers
What was the primary composition of the first atmosphere on Earth?
What was the primary composition of the first atmosphere on Earth?
- Thick with oxygen and little water vapour
- Mainly consisted of hydrogen and methane
- Predominantly composed of nitrogen and its oxides
- Thick with water vapour, along with various compounds released by volcanic eruptions (correct)
What process led to the formation of the ocean on early Earth?
What process led to the formation of the ocean on early Earth?
- Volcanic eruptions releasing water into the atmosphere
- Water vapour condensing due to cooling of the Earth (correct)
- Hydrogen escaping into space
- Water vapour freezing into ice
Which of the following factors favoured the synthesis of organic molecules essential for the origin of life?
Which of the following factors favoured the synthesis of organic molecules essential for the origin of life?
- Low levels of UV radiation
- Abundant oxygen in the atmosphere
- The reducing atmosphere, volcanic eruptions, and hydrothermal vents (correct)
- The presence of complex organisms
What is the age of the fossils of micro-organisms that provide direct evidence for life on early Earth?
What is the age of the fossils of micro-organisms that provide direct evidence for life on early Earth?
What is the term for the process by which simple organic molecules combine to form macromolecules?
What is the term for the process by which simple organic molecules combine to form macromolecules?
Who proposed the biochemical evolution theory?
Who proposed the biochemical evolution theory?
What is the primary mechanism that facilitated the formation of small organic molecules from inorganic molecules on early Earth?
What is the primary mechanism that facilitated the formation of small organic molecules from inorganic molecules on early Earth?
What is the probable location where the first organic compounds and cells may have arisen?
What is the probable location where the first organic compounds and cells may have arisen?
What is the result of the polymerization of small organic molecules?
What is the result of the polymerization of small organic molecules?
What is the role of montmorillonite clay in the origin of life?
What is the role of montmorillonite clay in the origin of life?
What is the significance of the fourth stage in the sequence of events leading to the formation of first cells?
What is the significance of the fourth stage in the sequence of events leading to the formation of first cells?
What is the term used to describe the process of organic macromolecules being packed into membranes to form protocells?
What is the term used to describe the process of organic macromolecules being packed into membranes to form protocells?
