BISC 121Lg Lecture Notes - Lecture 9: Mixotroph, Euglena, Heterotroph
Document Summary
Protists are the most diverse eukaryotes: most protists are aerobic. Have mitochondria for cellular respiration: many are photoautotrophs. Have chloroplasts for photosynthesis: many are heterotrophs, some are mixotrophs, meaning that they can be both photoautotrophs and heterotrophs. Venus flytraps are an example of a mixotroph. Chloroplasts of euglena shrink down in continuous darkness and they only get energy through heterotrophy. They change their method of getting energy depending on the. Nutrition is not a reliable taxonomic characteristic environmental conditions: useful for understanding environmental adaptations of protists. Most mobile protists move with a flagella or cilia at some point in their life cycle: eukaryotic flagella are extensions of the cytoplasm with 9+2 microtubule support. Some protists can reproduce both sexually and asexually. Many protists form resistant cells called cysts and can survive harsh conditions. Protists are found almost anywhere with water and in most places with soil: plankton have protists.
