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Practical Microbiology for Nurses

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الكلية كلية التمريض     القسم قسم التخصصات التمريضية     المرحلة 2
أستاذ المادة ميس هادي جبر       04/07/2018 07:07:11
fungi grow at comparatively slow rates , are requiring several days to weeks to form macroscopically visible colonies. usually, the growth will spread over the entire culture plate .
fungi characteristic
1. fungi produce spores on brightly colored aerial hyphae.
2. the fungi have two form molds and yeast.
3. most fungi grow best at room temperature 25oc .
4. the basic medium for the culture of many molds (multicellular, filamentous fungi ) is sabouraud dextrose agar.
5. the high sugar concentration and low ph (5.6) of the fungus medium make it unsuitable for the growth of most bacteria, thus guarding against contamination -fungi grow well at ph 5.6 mold colonies may be examined directly in culture with a dissecting microscope.
6. it is better to teach away apportion of the growth and place it on a slide with a droping of water or stain ( a wet - mount) . an alternative method is a slide culture. the latter is more advantageous because one is able to study the growing mold and identify specific structures without disturbing the culture. the macroscopic aggregation (colony) of mold cells is called thallus,
7. thallus is composed of mass of strands called a mycelium, each strand is ahypha.
8. vegetative hyphae grow on the surface of culture media, they form aerial hyphae, and reproductive hyphae (that bear asexual reproductive spores or conidia).
9. the hyphae that grow below the surface of culture media are called rhizoidal hyphae.
10. the hyphal strand of some molds may be separated by across wall called a septum. hyphae that contain septa are called septate hyphae. molds with hyphae that lack septa are called coenocytic hyphae.
11. molds grow best at temperature 25oc (in lab), while the yeast grow best at temperature 37oc (in human)
12. some fungi have two form in (the same fungus body) molds and yeast called dimorphic fungous
13. the hyphal strand which carry conidia called conidiaphora, while the hyphal strand which carry sporangia called sporangiaphora. the spore inside the conidia and sporangia
14. fungi reproductive by sexual spore and asexual spore


المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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