Class Note for MIC 205A at UA 2
Class Note for MIC 205A at UA 2
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This 7 page Class Notes was uploaded by an elite notetaker on Friday February 6, 2015. The Class Notes belongs to a course at University of Arizona taught by a professor in Fall. Since its upload, it has received 16 views.
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Date Created: 02/06/15
Eukaryotes Functional Anatomy and Eukaryotic Microbes Eukaryotes DNA in nucleus surrounded by membrane DNA in several chromosomes DNA associated with histones and nonhistone proteins Other organelles include endoplasmic reticulum Golgi lysosomes mitochondria chloroplasts Eukaryotes Cell walls chemically simple none in animal cells Usually divide by mitosis 10100pm in diameter Algae fungi protozoa Animal and plant cells Evolution of Eukaryotes First living cells were prokaryotes Endosymbiotic theory Organeles inside eukaryotic cells arose from engulfed prokaryotic cells Mitochondria and chloroplasts have DNA that resembles prokaryotic DNA Ancestors of mitochondria were 02 requiring bacteria Ancestors of chloroplasts were photosynthetic bacteria Emergence of Eukaryotic Cells There exist Contemporary Endosymbionts Photosynthetic cyanobacteria pink inside flagellated protozoan Cyanophora Eukaryotic Cell Structures J External Structures to Know Flagellum Cilia Glycocalyx Cell Wall fungi Plasma membrane Glycocalyx Complex multisugar polysaccharide Plus bers capsule orslime layer 92 arrangement Elf micrutubules irir Side a flagellum Cell Walls lnternal Structures to Know Nucleus 39 Algae ceHUIosei P d39nv Endoplasmic reticulum ribosomes mannans SIOZ CaCO3 Golgi apparatus Fungi chitin poly NAG Lysosome Yeasts glucan and mannan Mitochondria Protozoa pellicle instead of cell Chloroplasts wall Notice all the complex internal membranes Enuoplamm mm um Cmamalln Nucleus mum Nuclear pun mum Rough Endoplasmic Reticulum Smooth Endoplasmic Reticulum Golgi Lysoso mes Lysoso mes Chloroplasts Cmnwnnst mum mm mammarel ms mommies 1 sum M um wand Eukaryotic Microbes Fungi Protists Algae Protozoa Helminths multicellular animals worms not really considered microbes Fungi Largest living beings Michigan fungus extended across 40 acres est weight 10 tons Hyphae hypha are long filaments Spores germinate to form new fungus Can reproduce sexually or asexually Very important ecologically the degraders Fungi Yeasts are unicellular others are multicellular Most are saprophytic Beneficialfungi decompose dead plants symbiotically help plants absorb water and nutrients are farmed by ants for food are eaten by humans produce foods and medicines Pathogenic Fungi Fungal diseases are mycoses Cutaneous mycoses Fungi have keratinase degrade keratin on skin nails and hair Systemic Mycoses Spread throughout the body Pathogenic Fungi Examples ringworm athletes foot Pathogenic Fungi Systemic mycoses Usualy caused by soil fungi Specia problems in immunocompromised hosts Example Valley Fever Coccidioides immitis Protists Algae and Protozoa Algae photosynthetic protists Aquatic Rarely pathogenic if ever Primary medical threat is from neurotoxins A Pathogenic Algae Pfiesteria piscicida A pathogenic Dino agellate Dino agellates known for red tidesquot Inhalation causes neurological skin eye respiratory and gastrointestinal symptoms Lichens Symbiosis Between Fungus and Alga Protozoa 65000 species Singlecelled Most are nonpathogenic and free living water Complex life cycles Protective capsule is called a cyst Protozoan Morphology mm A Pathogenic Flagellated Protozoa Gialdia lambfa giardiasis infects small intestines A Pathogenic Flagellated Protozoa Trypanosoma cruzi Chaga s Disease infects nervous system and heart carried by kissing bugs 16 18 million infections 50000 deaths year Helminths r v Multicellular macroscopic animals Pathogenic Helminths Flukes Tapeworms Hook worms Pin Worms What You Should Know Similarities and differences between prokaryotic and eukaryotic cells Location and function of all structures discussed in class What You Should Know What You Should Know 0 Morphology of eukaryotic microbes 0 Types of eukaryotic microbes unicellular or multicellular fungi most macroscopic beneficial uses algae some macroscopic example pathogens lichens macroscopic protozoa unicellular helminths macroscopic
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