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The high demand for nurses and other medical professionals has resulted in a dramatic enrollment increase in nursing schools and colleges who offer medical training. All these students are required to pass a course in microbiology, which tends to trip up many students. The proposed book will demystify the complex topic of microbiology in a way that students will gain the necessary skills required for several different branches of the medical profession.
use is in line with the body of the microscope. You’ll find the magnification marked on the objective. Sometimes the mark is color coded and other times the magnification is etched into the side of the objective. Resolution The area that you see through the ocular eyepiece is called the field of view. Depending on the total magnification and the size of the specimen, sometimes the entire field of view is filled with the image of the specimen. Other times, only a portion of the field of view
(Table 3-3). Bright-Field Microscope The bright-field microscope is the most commonly used microscope and consists of three lenses. These are the ocular eyepiece and the objective. Light coming from the illuminator passes through the specimen. The specimen absorbs some light waves and passes along other light waves into the lens of the microscope, causing a contrast between the specimen and other objects in the field of view. Specimens that have pigments contrast with objects in the field
their habitat. This is referred to as dimorphism, the property of having two forms of growth. For example, some fungi appear nonfilamentous when growing outside their natural habitat but filamentous when growing in their natural habitat. Such changes in appearance can make it challenging to identify a particular type of fungus. Fungal classification is based on the type of sexual spores the fungi produce. Listed below are examples of the divisions of the kingdom Fungi: • Zygomycota.
is used to treat giardiasis. Diiodohydroxyquin Diiodohydroxyquin is used to treat intestinal amoebic diseases. However, the drug can cause damage to the optic nerve if the dosage is not carefully controlled. Metronidazole Metronidazole combats parasitic protozoa and obligate anaerobic bacteria. It is used to treat vaginitis caused by Trichomonas vaginalis, giardiasis, and amoebic dysentery. Nifurtimox Nifurtimox is used to combat Chagas disease. However, nifurtimox can cause side effects,
4. disinfection 5. degerming 6. E 7. A 8. B 9. D 10. C Chapter 7 1. mutation rate 2. Francois Jacob and Jacques Monod 3. transcription 4. translation 5. G 6. A 7. F 8. B 9. C 10. D 11. E Chapter 8 1. genetic engineering 2. genetic material 3. restriction fragment length polymorphosis 4. recombinant DNA technology 5. recombinant DNA 6. B 7. D 8. A 9. E 10. C Chapter 9 1. Carl Linnaeus 2. five kingdoms 3. Monera 4. Plantae 5. Eukarya 6. D 7. B 8. C and E 9. F