NEET Exam > NEET Questions > According to Oparin and Haldane, what precede...
Start Learning for Free
According to Oparin and Haldane, what preceded the formation of life?
- a)Formation of water from oxygen and hydrogen
- b)Disappearance of the dinosaurs
- c)Chemical evolution from inorganic constituents
- d)Development of multicellular organisms
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
According to Oparin and Haldane, what preceded the formation of life?a...
Oparin of Russia and Haldane of England proposed that the formation of life was preceded by chemical evolution, which involved the formation of diverse organic molecules from inorganic constituents under Earth's early conditions.
Topic in NCERT: Origin of life
Line in NCERT: "oparin of russia and haldane of england proposed that the first form of life could have come from pre-existing non-living organic molecules (e.g. rna, protein, etc.) and that formation of life was preceded by chemical evolution, i.e., formation of diverse organic molecules from inorganic constituents."
Free Test
FREE
| Start Free Test |
Community Answer
According to Oparin and Haldane, what preceded the formation of life?a...
Introduction
The theories proposed by Alexander Oparin and John Haldane in the early 20th century revolved around the origins of life on Earth. They suggested that life emerged through a process of chemical evolution.
Chemical Evolution
- Oparin and Haldane proposed that life did not appear suddenly but rather evolved from simpler inorganic molecules.
- This process began in the primordial Earth, where conditions favored the formation of complex organic compounds.
Inorganic Constituents
- The building blocks of life, such as amino acids and nucleotides, originated from basic inorganic substances.
- Factors like UV radiation, lightning, and volcanic activity contributed to the synthesis of these organic compounds.
Role of Environment
- The early Earth had a reducing atmosphere that lacked oxygen, creating a conducive environment for the formation of organic molecules.
- The famous Miller-Urey experiment in 1953 supported this theory by demonstrating that amino acids could be synthesized from inorganic precursors under simulated early Earth conditions.
Formation of Prebiotic Compounds
- The accumulation of these organic compounds led to the formation of protocells, which are considered precursors to true living cells.
- These protocells eventually led to the development of more complex organisms through processes like natural selection and genetic evolution.
Conclusion
The assertion that chemical evolution from inorganic constituents preceded the formation of life aligns with Oparin and Haldane's theories. This foundational process laid the groundwork for the emergence of life as we know it, highlighting the significance of chemical interactions in shaping biological complexity.
The theories proposed by Alexander Oparin and John Haldane in the early 20th century revolved around the origins of life on Earth. They suggested that life emerged through a process of chemical evolution.
Chemical Evolution
- Oparin and Haldane proposed that life did not appear suddenly but rather evolved from simpler inorganic molecules.
- This process began in the primordial Earth, where conditions favored the formation of complex organic compounds.
Inorganic Constituents
- The building blocks of life, such as amino acids and nucleotides, originated from basic inorganic substances.
- Factors like UV radiation, lightning, and volcanic activity contributed to the synthesis of these organic compounds.
Role of Environment
- The early Earth had a reducing atmosphere that lacked oxygen, creating a conducive environment for the formation of organic molecules.
- The famous Miller-Urey experiment in 1953 supported this theory by demonstrating that amino acids could be synthesized from inorganic precursors under simulated early Earth conditions.
Formation of Prebiotic Compounds
- The accumulation of these organic compounds led to the formation of protocells, which are considered precursors to true living cells.
- These protocells eventually led to the development of more complex organisms through processes like natural selection and genetic evolution.
Conclusion
The assertion that chemical evolution from inorganic constituents preceded the formation of life aligns with Oparin and Haldane's theories. This foundational process laid the groundwork for the emergence of life as we know it, highlighting the significance of chemical interactions in shaping biological complexity.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
Question Description
According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer?.
According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer?.
Solutions for According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice According to Oparin and Haldane, what preceded the formation of life?a)Formation of water from oxygen and hydrogenb)Disappearance of the dinosaursc)Chemical evolution from inorganic constituentsd)Development of multicellular organismsCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup