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  2. Autotroph - Wikipedia

    en.wikipedia.org/wiki/Autotroph

    An autotroph is an organism that can convert abiotic sources of energy into energy stored in organic compounds, which can be used by other organisms. Autotrophs produce complex organic compounds (such as carbohydrates , fats , and proteins ) using carbon from simple substances such as carbon dioxide, [ 1 ] generally using energy from light or ...

  3. Abiogenesis - Wikipedia

    en.wikipedia.org/wiki/Abiogenesis

    According to the nebular hypothesis, the formation and evolution of the Solar System began 4.6 Gya with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun , while the rest flattened into a protoplanetary disk out of which the planets , moons , asteroids ...

  4. Zooxanthellae - Wikipedia

    en.wikipedia.org/wiki/Zooxanthellae

    Zooxanthellae are autotrophs containing chloroplasts composed of thylakoids present in clusters of three. [9] A pyrenoid protrudes from each chloroplast and is encased along with the chloroplast by a thick, starchy covering. Within the cell’s cytoplasm also exists lipid vacuoles, calcium oxalate crystals, dictyosomes, and mitochondria. [9]

  5. Food chain - Wikipedia

    en.wikipedia.org/wiki/Food_chain

    Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...

  6. Carbon source (biology) - Wikipedia

    en.wikipedia.org/wiki/Carbon_source_(biology)

    An autotroph is an organism that can convert abiotic sources of energy into energy stored in organic compounds, which can be used by other organisms.Autotrophs produce complex organic compounds (such as carbohydrates, fats, and proteins) using carbon from simple substances such as carbon dioxide, [1] generally using energy from light or inorganic chemical reactions. [2]

  7. Unicellular organism - Wikipedia

    en.wikipedia.org/wiki/Unicellular_organism

    [36] [37] Protozoa, like plants and animals, can be considered heterotrophs or autotrophs. [33] Autotrophs like Euglena are capable of producing their energy using photosynthesis, while heterotrophic protozoa consume food by either funneling it through a mouth-like gullet or engulfing it with pseudopods, a form of phagocytosis . [ 33 ]

  8. Play Just Words Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/just-words

    Just Words. If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online! By Masque Publishing

  9. Herbivore - Wikipedia

    en.wikipedia.org/wiki/Herbivore

    Definition and related terms Herbivory is a form of consumption in which an organism principally eats autotrophs [ 6 ] such as plants , algae and photosynthesizing bacteria . More generally, organisms that feed on autotrophs in general are known as primary consumers .