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Week 7 Diversity
bio 1100
Term | Definition |
---|---|
Evolutionary tree's _____ show which groups are more primitive or advanced. | Do not |
Evolutionary trees | reveal the evolutionary history of species and the sequence of speciation events that give rise to them. |
Clade | a group of organisms believed to have evolved from a common ancestor. |
Sister Taxa | Closest relatives of another given unit in an evolutionary tree. |
Basal Taxon | Directly connected to ancestral lineage, oldest species. |
Branch point | Where lineages diverge. |
Polytomy | An unresolved pattern of divergence. |
3 domains of life | Bacteria, Archaea, Eukarya. |
Domain Archaea | Lack membrane bound organelles, don't have a real nucleus, live in extreme environmental conditions, resistant to traditional antibiotics. |
Domain Bacteria | Lack membrane bound organelles, don't have a real nucleus. |
Domain Eukarya | have membrane bound organelles, including a nuclear envelope. |
Taxonomical Catagories | Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. Do koalas prefer chocolate or fruit generally speaking. |
Domain | Bacteria, Archaea, Eukarya. |
Kingdom | Protista, Plantae, Fungi, Animalia. |
Domain Eukarya | Unicellular -> Protist. Multicellular -> Autotrophs -> Kingdom Plantae OR Multicellular -> Heterotrophs and if they ingest food they are kingdom animalia, if they absorb food they are kingdom fungi. |
Yeast is a | Unicellular fungus |
Algae is a | Multicellular protist |
Animal-like protists | Some protists, such as Trichomonas Vaginalis shown here, move around and hunt for prey like an animal |
Fungi-like Protists | Some protists, such as the plasmodial slime mold shown here, live as heterotrophs and form sheet like colonies of cells like a fungus. |
Plant-Like Protists | Some protists, such as the kelp forest shwon here, are multi cellular and photosynthetic like a plant. |
Photosynthetic groups | Plants (land), Algae (aquatic), Cyanobacteria (aquatic-pond) |
Protists are an important component of | Plankton |
Anemone | Protects Dinoflagellate and Clown fish but also gives food leftovers to Clown Fish |
Clown fish | Urine of clown fish has high concentration of ammonia that Dinoflagellate converts to protein, also cleans anemone. |
DinoFlagellate | Protist that live in between the cells of the anemone, produces sugars through photosynthesis that feeds the anemone, |
Cocci | Spherical bacteria |
Bacilli | Rod Shaped bacteria |
Spirilli | Spiral shaped bacteria |
Mutualistic Symbiosis Bacteria | Thousands of species of bacteria live in the intestines of animals helping in digestion and protection. |
Photosynthesis Bacteria | Cyanobacteria use photosynthesis to produce sugars and release oxygen. |
Parasitic symbiosis bacteria | Bacteria produce the majority of infectious diseases in humans |
Nitrogen Fixation and decomposition step 1 | Nitrogen gas is "fixed" by soil-dwelling bacteria, producing ammonia and other compounds containing nitrogen. |
Nitrogen Fixation and decomposition step 2 | The nitrogen compounds are further modified by other bacterias into a form that can be taken up by plants and used to build proteins. |
Nitrogen Fixation and decomposition step 3 | Nitrogen moves through the food chain as organisms eat plants and then are themselves eaten. |
Nitrogen Fixation and decomposition step 4 | Animals wastes and dead animals and plants are broken down by soil bacteria that convert the nitrogen in the tissue back into nitrogen gas. |
Nitrogen is necessary to build all _______, the components of every _______molecule | Amino Acids, Protein. |
For nitrogen the most important reservoir is ________ | Atmosphere. |
Protists | Disease causing microbes |
Malaria a Protist-Caused Illness Step 1 | Following the bite of a Plasmodium-infected mosquito, malaria-causing protists take up residence in healthy red blood cells. |
Malaria a Protist-Caused Illness Step 2 | Once inside a red blood cell, Plasmodium cells modify the cells, surface proteins, making it difficult for the immune system to fight the malarial infection. |
Chitin | Makes fungi and plant cell walls |
Peptidoglycan | make bacteria cell walls |
Cellulose | Make plant cell walls |
Heterotrophic | An organisms that cannot fix carbon from inorganic sources but uses organic carbon for growth. |
Autotrophic | An organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions. |
Decomposers | An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material. |
Mutualist | Organism that benefits from a relationship with another organism that benefits from same relationship. |
Parasits | An organism that lives in or on another organism and benefits by deriving nutrients at the hosts expense. |
Structure and ecological role of Bacteria | Capsule, Cell Wall, Plasma membrane, Cytoplasm, Chromosome, Plasmid, Pili, Ribosomes, Flagellum, help difestion in intestines, cyanobacteria = photosynthesis, nitrogen fixation, and some bacteria cause infectious disease. |
Structure and ecological role of Archaea | Basically same as Bacteria except unicellular, without cell walls, produces slime mold (as a decomposer) and parasitic in the sense they produce malaria mutualistic role in anemones, photosynthetic role in algae |
Structure and ecological role of Fungi | Hyphae, cell wall, root hair, plasma membrane |
Structure and ecological role of Protists | producing 70-80% of worlds oxygen, being a main food source for aquatic animals and a major decomposing agent of dead material. Unicellular, and multicellular that contain a nucleus enclosed in a membrane |
Fungi are decomposers or Symbionts, meaning? | Fungi acquire energy by breaking down the tissues of dead organisms or by absorbing nutrients from living organisms. |
Fungi are Sessile, meaning? | Fungi are anchored to the organic material on which they feed. |
Fungi have cell walls made of _______ | Chitin. |
Mycorrhizae | Mycorrhizal fungi grow in association with the roots of plants, receiving sugar from the plant while transferring nitrogen and phosphorus from the soil to the plant. |
Protists are | All eukaryotes that are not plants, animals or fungi |