Evolution
Uttar Pradesh Board · Class 12 · Biology
Flashcards for Evolution — Uttar Pradesh Board Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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Explore the full setWhat is the Big Bang theory and how does it relate to the origin of the universe?
Answer
The Big Bang theory explains the origin of the universe through a singular huge explosion about 20 billion years ago. The universe expanded, temperature decreased, and hydrogen and helium formed. Gase…
What is the Big Bang theory and how does it relate to the origin of the universe?
Answer
The Big Bang theory explains the origin of the universe through a singular huge explosion about 20 billion years ago. The universe expanded, temperature decreased, and hydrogen and helium formed. Gase…
Define chemical evolution and explain the Oparin-Haldane hypothesis.
Answer
Chemical evolution refers to the formation of organic molecules from inorganic constituents before the origin of life. Oparin and Haldane proposed that the first life forms arose from pre-existing non…
Define chemical evolution and explain the Oparin-Haldane hypothesis.
Answer
Chemical evolution refers to the formation of organic molecules from inorganic constituents before the origin of life. Oparin and Haldane proposed that the first life forms arose from pre-existing non…
Describe Miller-Urey experiment and its significance in understanding origin of life.
Answer
In 1953, S.L. Miller created conditions similar to early Earth in a laboratory flask containing CH₄, H₂, NH₃, and water vapor at 800°C with electric discharge. He observed formation of amino acids. Th…
Describe Miller-Urey experiment and its significance in understanding origin of life.
Answer
In 1953, S.L. Miller created conditions similar to early Earth in a laboratory flask containing CH₄, H₂, NH₃, and water vapor at 800°C with electric discharge. He observed formation of amino acids. Th…
What is the theory of spontaneous generation and how was it disproved?
Answer
Spontaneous generation theory claimed that life came from decaying matter like straw and mud. Louis Pasteur disproved it through careful experimentation showing that in pre-sterilized flasks, life did…
What is the theory of spontaneous generation and how was it disproved?
Answer
Spontaneous generation theory claimed that life came from decaying matter like straw and mud. Louis Pasteur disproved it through careful experimentation showing that in pre-sterilized flasks, life did…
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