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MSU BIO 101 - Weird Life
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Three Domains of LifeBacteria (Procaryotic)Archea (procaryotic)Eucarya (Eucaryotic)Protista KingdomFungi KingdomAnimal KingdomPlant KingdomHow long can organisms live?A butt ton of years (if you are a tree)Is this alive?Kingdom: animaliaPhylum: ChordataSubphylum: TunicataClass: ThaliaceaOrder: pyrosomidaFamily: PyrosomatidaeGenus: PyrosomaMicroorgnaisms Bacteria, archea, and ProtistaThe bacteria and archea are the most numerous organisms on earth and have been around more than 3.5 billion years.Protista (with complex eucaryotic cells) appeared 2.1 million years ago.Most bacteria can live in the human body and make humans ill.FALSEBacteriaEcosystem health and personal health depend on bacteriaBacteria inside your body produce vitamins and help you digest your foodBacteria living on your skin protect you form infections by fungi and other bacteriaNiche is occupiedGood bacteria make antibodies to kill invadersThe bacterial populations change over time.Antibacterial soapsGood or bad?Both. It kills both the good and the bad bacteria on your hands.In hospital situations, it is very good to have antibacterial soaps.BacteriaIndispensable member of ecosystemsImportant source of photosynthesis in the oceanSymbiotic relationship with animalsSymbiotic relationship with plantsDecompositionBacteria in your world — some need oxygen, others are killed by it.Archea4 GroupsHalophiles: Salt lovingDead sea, Great Salt LakeThermoacidophiles: Heat and acid lovingSulfolobus— Hot springsSome can live in boiling waterMethanogens: AnaerobicMake methane (Natural Gas)Deep Ocean, Swamps, intestinal systemsPsychrophilesLive in very cold temperaturesHow do bacteria get their energy?They are photosynthetic, heterotrophic, and chemosynthetic.How do bacteria Live: Alone or in groups?They live alone and in groupsCaulobacter crescentus reproducing by binary fissionCells may adhere or stick to one another after fission forming chains of bacteria.Formation of microbial communitiesSometimes bacteria stick to a solid surface and make a gel that cements them their and traps other microbes too.StromatolitesFormed by huge colonies of cyanobacteriaOldest fossil ones are 3.5 billion years old.Hamelin Pool, Shark bay, Australia where water is twice as salty as the ocean.BiofilmsBiofilms are composed of populations or communities of microorganisms adhering to environmental surfaces. These microorganisms are usually encased in an matrix that they themselves make. Biofilms may be found on any environmental surface in which sufficient moisture is present.Often form on contact lenses, joint replacements, water pipes, etc.What uses do people have for viruses, Bacteria, and Archea?Germ WarfareIndustrialFood productionLaundry detergentsMedicinesBioterrorismGenetic engineeringProtista— The kingdom that Biologists Love to HateAll eucaryotic (Large, complex cells)Mostly single celled, some colonial, a few multicellularAutotrophs, Heterotrophs, or Decomposers or more than one mode of nutrition!Plant like, Animal Like (protozoa) or fungus likeImportant groups of ProtistaPhytoplanktonCalled algae, most unicellularmost float in waterPerform much of photosynthesis on earth.Seaweed!ZooplanktonPrimary consumers of phytoplanktonMost unicellularImportant in aquatic food webPhytoplankton— DiatomsHave glass (silica) shells as protection against predatorsUse in abrasives.Multicellular Protista — seaweedBrown algae fastest growing on earth.ZooplanktonBorticella— live in pondsFungus like Protista that infect potatoesPhytophthoraFungus infecting a potato leafChapter 8 has the bacteria and virusesBI0 101 1st Edition Lecture 11Outline of Last Lecture I. Male anatomyII. Female anatomy III. Hormones in uterusIV. SemenV. ContraceptionVI. FertilizationVII. BirthVIII.InfertilityIX. Birth control Pills Outline of Current Lecture II. Three Domains of lifeIII. BacteriaIV. Antibacterial SoapsV. ArchaeVI. BiofilmsVII. ProtistaCurrent LectureThese 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. Three Domains of Life- Bacteria (Procaryotic)- Archea (procaryotic)- Eucarya (Eucaryotic)o Protista Kingdomo Fungi Kingdomo Animal Kingdomo Plant Kingdom How long can organisms live?- A butt ton of years (if you are a tree) Is this alive?- Kingdom: animalia- Phylum: Chordata- Subphylum: Tunicata- Class: Thaliacea- Order: pyrosomida- Family: Pyrosomatidae - Genus: PyrosomaMicroorgnaisms Bacteria, archea, and Protista- The bacteria and archea are the most numerous organisms on earth and have been around more than 3.5 billion years.- Protista (with complex eucaryotic cells) appeared 2.1 million years ago. Most bacteria can live in the human body and make humans ill. - FALSE Bacteria- Ecosystem health and personal health depend on bacteria- Bacteria inside your body produce vitamins and help you digest your foodo Bacteria living on your skin protect you form infections by fungi and other bacteria Niche is occupied Good bacteria make antibodies to kill invaders The bacterial populations change over time.  Antibacterial soaps- Good or bad?- Both. It kills both the good and the bad bacteria on your hands.o In hospital situations, it is very good to have antibacterial soaps. Bacteria- Indispensable member of ecosystemso Important source of photosynthesis in the oceano Symbiotic relationship with animalso Symbiotic relationship with plantso Decomposition Bacteria in your world — some need oxygen, others are killed by it. Archea- 4 Groupso Halophiles: Salt loving Dead sea, Great Salt Lakeo Thermoacidophiles: Heat and acid loving Sulfolobus— Hot springs Some can live in boiling watero Methanogens: Anaerobic Make methane (Natural Gas) Deep Ocean, Swamps, intestinal systemso Psychrophiles Live in very cold temperatures How do bacteria get their energy?- They are photosynthetic, heterotrophic, and chemosynthetic. How do bacteria Live: Alone or in groups?- They live alone and in groups Caulobacter crescentus reproducing by binary fission- Cells may adhere or stick to one another after fission forming chains of bacteria.  Formation of microbial communities- Sometimes bacteria stick to a solid surface and make a gel that cements them their and trapsother microbes too. Stromatolites- Formed by huge colonies of cyanobacteria - Oldest fossil ones are 3.5 billion


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