Microbiology

Are bacteria generally more resistant to antibiotics when they grow in suspension or in a biofilm? Why? Draw and label a typical bacterial growth curve. Describe what is happening during each of the major phases. … Read More »Microbiological Metabolism Study Questions

Bacterial metabolism results in products that are used for the synthesis of cellular constituents, like peptidoglycan, LPS, proteins, nucleic acids, etc..  You learned about the mechanisms of bacterial transcription of mRNA, DNA replication (including types… Read More »Biosynthesis

Fermentation refers to the breakdown of a monosaccharide to pyruvic acid and  then usually to lactic acid.  It is also called the glycolytic cycle and is the process by which facultative bacteria produce ATP under… Read More »Fermentation of Sugars in Microorganisms

The growth of most medically important organisms is enhanced by the presence of oxygen, which acts as the hydrogen acceptor in the final stages of energy production catalyzed by the flavoproteins and cytochromes of the… Read More »Aerobic and Anaerobic Growth and Metabolism

Bacteria cannot reproduce without a source of energy and the building blocks of cellular constituents (e.g. amino acids, carbohydrates, lipids). Minimum requirements for growth are a source of carbon and nitrogen, an energy source, water… Read More »Bacterial Metabolism

Growth Cycle Bacteria reproduce by binary fission:  one cell divides to form 2 progeny cells.  This results in exponential (logarithmic) growth. 1. Number of cells     1     2     4     8     16 Exponential           20     21     22     23… Read More »Growth Cycle in Microbiology

Learning Objectives: You should be able to: explain how bacteria reproduce and the potential effects of a short vs. a long generation time on the production of disease. describe the different forms of bacterial growth… Read More »Metabolism in Microbiology