PPT-General Bacterial Cell Structure

LecNo2 Dr Oruba Cellular Organelles   1 Ribosomes These are 18 nm particles which are scattered in thousands of them in the cytoplasm Each particle unit is of 70S type which consists of two subunits large one of 50S and a small one of 30S The concentration of Mg. Lecturer : Dr. . Thanaa. . Rasheed. Historical Introduction Concerning the Development of the Science of Microbiology.. -. The golden age of Microbiology began after the year 1850. . Many scientists contribute to the science of Microbiology.. 1000. 1000. 1000. 1000. mm. Micrometre. n. m. Nanometre. Micrometre. Millimetre. 5. 0.005. 0.000005. 1.  .  .  . 1.  .  .  . 1.  . 3.  . 7.  .  .  .  . 0.5.  .  .  . 0.001. 0.000001. 1000. 2. Prokaryote & Eukaryote. Evolution. 3. Cellular Evolution. Current evidence indicates that . eukaryotes evolved from prokaryotes. between 1 and 1.5 billion years ago. Two theories:. 1. . Infolding theory. Phenotypic and genotypic Variability of Bacteria. Overview . Phenotypic variation :. . phenotype : The physical expression of various characters by bacterial cells in a given environment. . These properties are determined by its genome and by environment. . College of Fisheries, . Kishjanganj. BASU, . Patna. Microbial Genetics. Microbial Genetics. Glossary:. Strain . or clone. :. A clone is a population of cells that are genetically . ideal pure culture.. Significance and Impact. The findings offer clues to the evolutionary origins of the potent toxins that enable bacterial pathogens to cause human diseases such as cholera and diphtheria. .. Research Details. - 2022(MICROBIOLOGY) Group - A History of Development of Microbiology Development of microbiology as a discipline, Spontaneous generation vs . biogenesis. Contributions of Anton va n Leeuwenhoek, I. Remind ourselves with the Structure And the Functions Of The Genetic Material. Nucleic acids structure . There are two major classes:. Deoxyribonucleic acid (DNA) . : The most common macromolecule that encodes genetic information. . How are Prokaryotes Different from Eukaryotes?. The way their DNA is packaged. No nucleus. Not wrapped around . histones. The makeup of their cell wall. Bacteria- peptidoglycan. Archae- tough and made of other chemicals, distinct to them. Dr.Qurat-Ul-Ain. Department Of Microbiology. KEMU,Lahore. . Two Basic Types of Cells. _____________________. ______________. Size of Living Things. 1 m = 100 cm = 1,000mm = 1,000,000 . µ. m = 1,000,000,000nm. cell. Surface structure:. 1-Capsule. 2- Cells wall…. Peptidoglycan . 3- Cell membrane…. bilayer. 4- Appendages Flagella and . Pili. . Interior structure:. Cytoplasm (protoplast). Gas vacuoles. /. 10. /. 2019 Dr. . oruba. Khalid . abbas. . . Lec. . : 2. . Welcome To. Meet the Microbes!. Coccus. Bacillus. Vibrio. Spirillum. . Mycoplasma. El-. Khateeb. Major clinical manifestations of immune disorders. Disorder. Associated Disease. Deficiency. B cell deficiency – deficiency in . Ab. mediated immunity. Recurrent bacterial disease (otitis media, recurrent pneumonia. 2021-2022. Third class. Dr. . Luma. T. Ahmed. Microbiology.  . Microbiology.  . Microbiology. is the science dealing with all microorganisms. Microorganisms. are creatures that are not directly visible to the unaided eye (naked eye). All these creatures are living in nature. Part of these is living in a saprophytic form on soil, water, vegetation and so on. Some of these saprophytic microorganisms may invade the body of human or animal causing important diseases ( .