Biology 200B Lecture 4 Mon. Jan. 26 Prokaryotes I. Kingdoms and DomainsII. Archaea and BacteriaIII. Microbe Abundance and DiversityIV. Prokaryote Cell StructureV. Metabolic DiversityVI. Difference in quality of lifea. Germ Theory of Diseaseb. Koch’s Postulates Wed. Jan. 28 Protists (chapter 30) I. Protistsa. Definition “Protista”b. Protest diversification II. Origin of mitochondria III. Origin of ChloroplastsIV. Sexual reproductionV. Protists as pathogens Chapter 30 ProtistsProtists: “Protista,” all eukaryotes except fungi, animals, and plants- Paraphyletic- Many single-celled, some multicellular- Group in which multicellular organisms evolved Protist diversification: innovative structures for support, protection, and feeding- Formation of nucleus and endomembrane system - Protective coverings (“shells”)- Pseudopodia – flexible membrane and dynamic cytoskeleton allowing them to move andhunt- Engulf their prey These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Origin of Mitochondria: The endosymbiosis Theory1. Mitochondria – the size of bacteria and replicate by fission 2. Mitochondria and bacteria have their own ribosomes3. Have their own genomes4. Have double membranesOrigin of Chloroplasts: Primary endosymbiosis – protists ate a photosynthetic cyanobacterium; result was PlantaeSecondary endosymbiosis – then other kinds of protists ate themSexual Reproduction: evolved in protists- Significant evolutionary innovation - Asexual reproduction – mitosis- Sexual reproduction – meiosis and fusion of gametes - Adult is diploidMany protists are pathogens – make you sick- Malaria – caused by Plasmodium protest- STDs Protists power the aquatic food chain and influence the global carbon cycle- Act as carbon sinks that could help reduce global warming- Iron is a limiting factor in electron transport chain for
View Full Document
Unlocking...