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Picture from http://berkeley.edu/news/media/releases/2006/12/21_microbes.shtml http://sustainabledesignupdate.com/?p=409 http://www.mycology.adelaide.edu.au/gallery/hyaline_moulds/?template=print
Eukaryotic microbesEukaryotic microbes: Eukaryotic microbes: we considered unique features of each, their niche in the environment, and whether they might cause disease.Algae: as photosynthetic organisms, why are they so important in the environment? What features of algae
are considered when classifying them? What are some potentially harmful effects of algae?Fungi: what features of fungi make them so unique that they are grouped in their own kingdom? How do
fungi reproduce? Fungi are placed into groups according to what feature? What is the major contribution of fungi to ecosystems? What are some differences between yeasts and molds? What is a dimorphic organism? What are some potentially harmful effects of fungi? How can fungi cause disease?
Protozoa: In what kingdom are protozoans found? What is the distinguishing feature of Mastigophora, Sarcodina, Ciliophora, Apicomplexa? How do they reproduce? Why is their complex life cycle a challenge in treating (or preventing) disease caused by protozoans?
What is a parasite? What is a saprophyte? Which type of the above organisms can be parasitic? Which types can be saprophytes?
Helminths: what are the three major types of worms that we discussed in class? Be able to give examples of each, the disease they cause, and explain how they are transmitted to the host?
What do we mean by primary and secondary host? Which is which?Vector: what is the difference between a mechanical vector and a biological vector? Give examples of each.
What do we mean by “vector control” and how is it achieved? Why might this help reduce the spread of certain diseases?
-any organism living upon dead or decaying organic matter.-obtain nutrients from dead organic matter.-Most fungi in eukaryotes some bacteria in prokaryiotes
Mycobateria
Picture from http://en.wikipedia.org/wiki/Saprotroph
___________ are organisms that live and feed onfeed on dead organic matter. -Most fungi and some bacteria.
___________ are organisms that breakdownbreakdown complex organic (dead or decaying organisms) intointo simpler mineral components. -Fungi, bacteria, and protozoa.
Saprophytes
Decomposers
What is the difference saprophytes from decomposers?
•ReproductionReproduction - polymorphic ___________ ~ Vegetative or feeding form Favorable environment ___________ ~ Resting form, also can reproduce Adverse conditions Protective cyst wall within the cytoplasm. Lack of nutrient, moisture or oxygen, toxic.. For dispersal and survival. - Sexual syngamy- gametes from different individuals. autogamy- gametes are formed and then fuse. Conjugation - Asexual ~ Binary fission; Budding; Schizogony (multiple fission)
___________- can exist as mold/hyphal/filamentous form or as yeast. Fungi grow … as mycelia(mold) in soil or spores in the air. as yeast-like cells in the body.
___________- can exist as mold/hyphal/filamentous form or as yeast. in fungi Spores in the air are inhaled develop into yeast-form in the lungs disease