origin of life
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
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| abiogenesis or spontaneous generation | show 🗑
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| jean von helmont | show 🗑
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| leeuwenhoek | show 🗑
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| show | boiled chicken for LESS than five minutes and then placed in a sealed flask. He found that microorganisms grew. (proving abiogenesis)
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| show | boiled chicken for more than 5 minutes and then placed in a sealed flask. He found that NO microorganisms grew. (disproving abiogenesis)
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| show | meat into a glass jar and found that flies were inside; then covered with an airtight top; found that no flies were there. people claimed he had killed the life (gives rise to flies) of airflow; so then, he covered jar with cheesecloth; still no flies.
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| louis pasteur | show 🗑
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| show | life comes from life
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| origin of life/organic soup theory | show 🗑
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| show | 1953- duplicated the primitive atmosphere and after one week produced two amino acids.
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| Sidney Walter Fox | show 🗑
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| microspheres | show 🗑
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| show | several types of molecules- ex, phospholipids with proteins throughout (NO DNA-meaning not a cell)
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| show | all hot magma; the atmosphere is cold, so the earth is slowly cooling.
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| show | had H2 (hydrogen gas), H20 (water vapor), NH3 (ammonia), CH4 (methane). There is no free oxygen. There is also no Ozone layer (O3) which means the sun is shining too brightly- radiation!
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| what types of energy convert primitive gases into ions... | show 🗑
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| H20 turns from vapor into water as it rains for millions of years, meaning.. | show 🗑
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| show | phosphorus and salts enter the water basins, meaning that important materials enter the water and can bond with ions to form the building blocks of life.
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| show | monosaccharides, glycerol, fatty acids, amino acids, and nucleotides.
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| these simple organic molecules form more complex organic molecules such as... | show 🗑
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| show | since the glycerol part of phospholipids are hydrophilic while the fatty acids are hydrophobic, they formed spheres called microspheres; eventually, proteins entered these spheres. this led to the formation of cell membranes.
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| show | makes a cell
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| show | heterotrophic, anaerobic, and prokaryotic; anaerobic respiration led to CO2 being released into the air.
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| CO2 in the atmosphere means that.. | show 🗑
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| show | photosynthesis being able to occur (more sun protection with Ozone layer); this means that free oxygen can also enter the atmosphere.
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| oxygen in atmosphere | show 🗑
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| show | life can leave the seas.
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| show | the relationship (mutualism) between organisms like the mitochondria, chlorophyll and the ancient prokaryotic cells which eventually led to simple cells becoming complex and life finally evolving into actual organisms.
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