Biology 3218F/G Lecture Notes - Lecture 5: Chromista, Physarum Polycephalum, Protoplasm
20 Sep 2016
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Document Summary
Plasmodium: (like vomit on a lawn) a living structure of cytoplasm (i. e. a patch) with a single. Pm surrounding it, and inside are millions of nuclei organizing this patch; it glides around using the same biochemistry as our muscles (and thus makes a good cellular model system in studying kinetics) Feeds by engulfing amoebae, spores, bacteria, dead vegetation, microbes. When they turn from animal stage into fungal stage, they look beautiful and they"re ecologically important b/c they eat bacteria and etc. They"re invisible while gliding through soil; if they weren"t there, there may be population explosions of certain organisms. White birch on bottom right, and each individual fur is stemonitis (2 diff kinds of slime mould fruiting bodies) So the fruiting bodies are sometimes called sporangia: a body that produces spores. Capillitium are threads that serve to keep the structure open and keep spores from collapsing (seen on top right); spores are in the spaces between the threads.
