PPT-Chapter 5 Microbial Genetics

Genetics The study of what genes are how they carry information how information is expressed and how genes are replicated Gene A segment of DNA that encodes a functional product usually a protein. 1 Microbial Growth:4Refers to an increase in cell , not in cell size.4Bacteria grow and divide by binary a rapid and relatively simple process. Requirements for GrowthPhysical Requirements1. : Microb 1. 19. Copyright © McGraw-Hill Global Education Holdings, LLC. Permission required for reproduction or display.. Introduction to . Microbial . Taxonomy. Taxonomy. science of biological classification. A. Metabolism. 1. Anabolism. A) synthesis reactions (building up). 2. Catabolism. A) lysis reactions (breaking down). B. Enzymes. 1. proteins that facilitate chemical reactions. Microbial Metabolism. Eric J. Raes, P.E. ., LSRP. Engineering and Land Planning . Dora Ogles, Brett Baldwin, Kate Clark & . Anita Biernacki. Microbial Insights Inc.. Kerry Sublette, Ph.D., Kate Key. University of Tulsa. in vitro. CLS 212. Microbicidal. . Microbicidal is the process or an agent that . kills. the microorganism. . The suffix . -. cidal. or . –. cide. means . ??( . See chapter 8 page 131. ). . Ignaz. . Semmelweis. and Joseph Lister developed the first microbial control methods.. Mid 1800s. Before aseptic surgical techniques ~10% of all deaths were due to nosocomial infections. Delivering mothers as high as 25% death rate. A. Metabolism. 1. Anabolism. A) synthesis reactions (building up). 2. Catabolism. A) lysis reactions (breaking down). B. Enzymes. 1. proteins that facilitate chemical reactions. Microbial Metabolism. A. Structure of DNA. 1. discovered by James Watson and Francis Crick in 1953. 2. stores genetic information for the production of proteins. 3. composed of nucleotides. A) a nucleotide is composed of a nitrogenous base, sugar, and phosphate. In the Environment. Table 9.1 Terminology of Microbial Control. Figure 9.1 A plot of microbial death rate.. Basic Principles of Microbial Control. Action of Antimicrobial Agents. Alteration of cell walls and membranes. Microbiology. Microbial Growth. Microbial requirements for growth:. 1. . Physical. A. . Temperature. Optimal growth temperature. Permissible range. human pathogens optimal = . 37°C. Microbial Growth. A characteristic that an organism can pass on to its offspring through its genes is called what?. A TRAIT. The passing of traits from parents to offspring is called what?. HEREDITY. 2. The scientific study of heredity is called what?. Microbial growth is the increase in number of cells, not cell size. Microbial Growth. The Requirements for Growth: . Physical Requirements. Temperature. Minimum growth temperature. Optimum growth temperature. 1. . Discovered . by James Watson and Francis Crick . in 1953. 2. . Stores . genetic information for the production of proteins. 3. . Composed . of nucleotides. A) . A . nucleotide is composed of a nitrogenous base, . Microbial Genetics. Genetics. : the science of heredity. Genome. : the genetic information in the cell. Genomics. : the sequencing and molecular characterization of genomes. Gregor. Mendel. Grew pea plants .