Department of Biological Sciences University of Cape Town BIO1004S – Biological Diversity Microbes, Fungi, Algae and Plant Diversity Lecture 1 What are the key concepts being taught in the lecture? Note: This is an overview lecture that briefly describes what will be covered in the next three weeks. Key terms to define in this lecture: Microbes: Fungi: Algae: Plants: Domain: Eukarya: Archaea: Bacteria: Autotrophs: Heterotrophs: Inorganic carbon: Organic carbon: Eukaryote: Prokaryote: Phylogeny: Monophyletic: Polyphyletic: Lichen: Fruticose: Foliose: Crustose: Bryophytes: Gymnosperms: Angiosperms: Gametophyte: Sporophyte: Additional definitions: Questions to test your understanding: What is the difference between a domain and a kingdom? Department of Biological Sciences University of Cape Town Differentiate between a photoautotroph and a chemoautotroph. Differentiate between a photoheterotroph and a chemoheterotroph. Why are phylogenetic studies important to understanding life on earth? What are the direct and indirect evidence for photosynthesis in bacteria? What are the main differences between prokaryotic cells and eukaryotic cells? List the main challenges that land plants had to overcome when colonising the terrestrial environment. List and describe the four main groups of plants? Briefly outline the major milestones on the evolution of life on Earth. Department of Biological Sciences University of Cape Town Examples (Describe fully, including all relevant details): Major Nutritional Modes Mode of Nutrition Energy Source Autotroph Photoautotroph Chemoautotroph Heterotroph Photoheterotroph Chemoheterotroph Carbon Source Prokaryotes in fossil records Fungi – General Description Fungi – Basidiomycota and Zygomycota Lichen – General description and 3 main growth forms Algae – Stramenopila Plants – Describe general classification/phylogeny of plants Examples Department of Biological Sciences University of Cape Town Lecture 2 What are the key concepts being taught in the lecture? Key terms to define in this lecture: Linnaean classification: Binomial classification: Virus: Viral genome: Membrane: Capsid: Viral DNA: Hydrolytic enzymes: Lysosomes: Vaccines: Viroids: Prions: Additional definitions: Questions to test your understanding: What is a binomial species name? Describe how to write a binomial species name. List the eight levels (in order) of the Linnaean classification system. Department of Biological Sciences University of Cape Town Why are viruses not considered to be truly “living”? Describe the viral reproductive cycle What are some of the impacts that viruses can have on living cells? What are the three main classes on animal viruses? What is the main characteristic that differentiates these three? Examples (Describe fully, including all relevant details): Viruses – tobacco mosaic disease Department of Biological Sciences University of Cape Town Viruses – Viral infections in humans Prions – Mad cow diseas and Creutzfeldt-Jakob disease (CJD) Types of double-stranded DNA viruses Types of double-stranded RNA viruses Types of single-stranded RNA viruses COVID-19 Department of Biological Sciences University of Cape Town Lecture 3 What are the key concepts being taught in the lecture? Key terms to define in this lecture: Prokaryotes: Endosymbionts: Cell organisation: Unicellular: Colony: Cocci: Bacilli: Peptidoglycan: Extremophile: Halophile: Thermophile: Endosymbiotic: Plastid: Additional definitions: Questions to test your understanding: Which Domains contain prokaryotes? How do we distinguish between the three domains of life? What is the size range of prokaryotes? Provide an answer in um and mm. Department of Biological Sciences University of Cape Town List and describe the three most common shapes of prokaryotes. What are the main differences between a prokaryotic cell and a eukaryotic cell? Compare the characteristics of the three domains of life. What are the two main types of bacteria that we find. What technique do we use to differentiate them? Discuss the endosymbiotic origin of eukaryotes. List the key evidence for the endosymbiotic origin of mitochondria and plastids (chloroplasts). Department of Biological Sciences University of Cape Town Examples (Describe fully, including all relevant details): Cyanobacteria Bacteria - Chlamydias Bacteria - Spirochetes Bacteria - Cyanobacteria Bacteria - Gram-positive Bacteria Disease causing bacteria - Humans Department of Biological Sciences University of Cape Town Lecture 4 What are the key concepts being taught in the lecture? Key terms to define in this lecture: Eukarya: Fungi: Symbionts: Co-radiation: Multicellular: Heterotrophs: Exoenzymes: Decomposer: Parasite: Myco-heterotrophic Symbiosis: Hyphae: Mycelia: Chitin: Septate: Coenocytic: Haustoria: Plasmogamy: Haploid: Diploid: Heterokaryon: Karyogamy: Spore: Germination: Zoospores: Zygosporangium: Mycorrhizae: Asci: Ascocarps: Basidium: Basidiocarp: Basidiospores: Additional definitions: Department of Biological Sciences University of Cape Town Questions to test your understanding: What does the phrase “Fungi are a sister kingdom to Animalia” mean? Discuss the evidence for the origin of Fungi. Discuss the role of Fungi in the environment. Describe the structure of a Fungi. Differentiate between Septate hypha and Coenocytic hypha. Discuss the life cycle of Fungi. Department of Biological Sciences University of Cape Town List and describe the five main lineages of Fungi. What are some of the important uses of Fungi in everyday human life. Examples (Describe fully, including all relevant details): Fungi – Symbiotic Fungi in the Cape Flora Fungi – Symbiotic Fungi in orchids Fungi – Animal symbiosis Department of Biological Sciences University of Cape Town Fungi – Chytridomycota Fungi – Zygomycota Fungi – Glomeromycota Fungi – Ascomycetes Fungi – Basidiomycota Fungi – Lichen symbiosis Department of Biological Sciences University of Cape Town Fungi – Examples of myco-heterotrophic and partially myco-heterotrophic plants Lecture 5 What are the key concepts being taught in the lecture? Key terms to define in this lecture: Protist: Thymidylate synthase (TS): Dihydrofolate reductase (DHFR): Morphology: Alveoli: Flagella: Chlorophyll: Diatoms: Alternation of generations: Haploid: Diploid: Sporangia: Spore: Zygote: Sporophyte: Gametophyte: Chlorophyll a: Chlorophyll b: Phycobilins: Additional definitions: Department of Biological Sciences University of Cape Town Questions to test your understanding: Discuss the phylogenetic origin of Eukaryotes. What is a Protist? Discuss the origin of Algae. Fully describe the life cycle of an Algae. What are the three main groups of Seaweeds? List and describe. Why would you find mostly red algae in the tropics, but mostly brown algae in the higher latitudes? Department of Biological Sciences University of Cape Town What are some of the human uses of Algae? Examples (Describe fully, including all relevant details): Algae - Alveolata Algae – Alveolata - Apicomplexans Algae - Stremenopila Algae – Stremenopila - Diatoms Algae – Stremenopila - Kelp Department of Biological Sciences University of Cape Town Red Algae Green Algae Brown Algae