Khan Academy
4:25
Khan AcademySal Khan
Khan Academy
Amoebas use pseudopods, or \"false feet\", for movement and capturing prey, demonstrating the complexity of cellular structures. Unicellular organisms like Oxytricha trifallax use cilia, or hair-like structures, for movement and have unique mating processes. Chlamydomonas, a green algae, uses a flagellum, or tail-like structure, for movement ...
2018年2月12日
Amoeba Time-lapse
An amoeba eating a human cell Live confocal microscopy time lapse demonstrating that bites of human cell material are internalized by the amoebae. Ingestion of bites occurs while human Jurkat cells are viable and ceases once they are dead. Human cells were pre-labeled with DiI (red; cell membrane), Flou4 (green; intracellular Ca2 ); and SYTOX blue (blue; nucleic acid in permeable cells) was present in the media during imaging. Images were collected every 30 seconds and are played back at 1 frame
0:08
An amoeba eating a human cell Live confocal microscopy time lapse demonstrating that bites of human cell material are internalized by the amoebae. Ingestion of bites occurs while human Jurkat cells are viable and ceases once they are dead. Human cells were pre-labeled with DiI (red; cell membrane), Flou4 (green; intracellular Ca2 ); and SYTOX blue (blue; nucleic acid in permeable cells) was present in the media during imaging. Images were collected every 30 seconds and are played back at 1 frame
FacebookAll Things Microbial
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🌱 Microbe Mondays 🔬 | Testate Amoeba & Flagellate Captured by Keisha W This time-lapse view at 40x magnification reveals a testate amoeba moving through the soil water film alongside a flagellate protozoan—two key players in a biologically active soil food web. Testate amoebae are shelled protozoa that build protective “tests” from organic debris or mineral particles. They are important indicators of stable, well-structured soils and often appear as fungal biomass increases. By grazing on bact
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🌱 Microbe Mondays 🔬 | Testate Amoeba & Flagellate Captured by Keisha W This time-lapse view at 40x magnification reveals a testate amoeba moving through the soil water film alongside a flagellate protozoan—two key players in a biologically active soil food web. Testate amoebae are shelled protozoa that build protective “tests” from organic debris or mineral particles. They are important indicators of stable, well-structured soils and often appear as fungal biomass increases. By grazing on bact
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Another amazing video of Vampire Amoeba Eating Spirogyra ⁠ ⁠ Time-lapse light microscopy footage of a Vampyrella lateritia trophozoite (center) attached to and feeding on a strand of Spirogyra algae (tubular). Vampyrella is a unicellular micro-organism sometimes described as a "vampire amoeba". It attacks other microscopic organisms, such as algae, and penetrates their cell walls and extracts the contents (green). The complete process of cell wall penetration, suction and extraction is shown in
0:59
Another amazing video of Vampire Amoeba Eating Spirogyra ⁠ ⁠ Time-lapse light microscopy footage of a Vampyrella lateritia trophozoite (center) attached to and feeding on a strand of Spirogyra algae (tubular). Vampyrella is a unicellular micro-organism sometimes described as a "vampire amoeba". It attacks other microscopic organisms, such as algae, and penetrates their cell walls and extracts the contents (green). The complete process of cell wall penetration, suction and extraction is shown in
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