What kinds of clinical specimens may yield a mixed flora in bacterial cultures? Oral, Skin, or GI specimens 5. When more than one colony type appears in pure culture, what are the most likely sources of extraneous contamination? Individual colonies can be picked up on the inoculating loop, or straight wire and inoculated in to the fresh agar or brother media References Cowan, M. K. (2012). MICROBIOLOGY: A SYSTEMS APPROACH, THIRD EDITION.
2. How does your answer from Question 1 relate to the Linnaean classification system? Experiment 2: Classification of Organisms Data Tables and Post-Lab Assessment Table 2: Key Characteristics of Some Organisms Organism | Kingdom | Defined Nucleus | Mobile | Cell Wall | Photosynthesis | Unicellular | E. Coli | | | | Yes | | Yes | Protozoa | | Yes | Yes | No | | Yes | Mushroom | | Yes | | Yes | | | Sunflower | | Yes | Yes | Yes | Yes | | Bear | | Yes | Yes | | | | Start Does the organism have a defined
Examine your living organism and determine if it is a bacteria, achaean or a eukaryote. At each step in classification, check the requirements for each category to determine where the species belongs. You then would begin to ask yourself a series of questions about the organism one question will lead to another. If the organism cannot be identified through the questions you will than need to do a gram staining process. You will look at the bacteria through a microscope exposing the bacteria's cell wall to two types of stains: a violet and a red one.
Chemistry PAT Question 1 Polyhydroxybutyrate (PHB) is a biopolymer with properties very similar to that of polypropylene, though has all the benefits that come with biopolymers. PHB was first introduced to the scientific community by the scientist Maurice Lemoigne in 1926. He noticed that to produce PHB you need particular micro-organisms such as Alcaligenes Eutrophus or Bacilius megaterium undergoing physiological stress in an apparatus such as an agar dish to allow the micro-organisms to multiply. In order to achieve this stress there is a restriction to the amount of nitrogen the micro-organisms can attain thereby altering its nutrition. This is quite an efficient method of production and the amount of the PHB polymer yielded is around 30-80% of the dry weight of the micro-organisms used.
AP Biology Chapter 27 Lecture Notes Prokaryotes and the Origins of Metabolic Diversity I. The World of Prokaryotes A. They’re (almost) everywhere! An overview of prokaryotic life 1. Prokaryotes dominate the biosphere. Their biomass is at least 10 times greater than all eukaryotes.
| | | C) | Osmotic pressure caused the cell to rupture. | | | D) | The cell was damaged by bacteria. | | | | | | Feedback: Since the cells are in a hypotonic solution, water entered by osmosis until the osmotic pressure ruptured the cell. | | 6 CORRECT | | The semifluid environment inside the plasma membrane is called ____. | | | A) | endoplastic reticulum | | | B) | microtubules | | | C) | cytoplasm | | | D) | mitochondria | | | | | | Feedback: The cell's chemical processes take place in a semifluid material called the cytoplasm.
The “Golden age” of microbiology occurred in the late 1800’s, this is when many infectious diseases were identified (cliffsnotes.com). After World War п, antibiotics were discovered and many diseases such as pneumonia, tuberculosis, meningitis, and syphilis declined (cliffsnotes.com). Studying bacteria is still very important in today’s society in order to prevent any epidemics from
According to Battle (2009), the Helminthes eggs are being passed from an human host through their feces. References Battle, C.U. (2009). Essential of Public Health Biology: A Guide for the Study of Pathophysiology. Sudbury, MA: Jones and Bartlett.
* Describe how recombinant DNA technology can be used to produce vaccines. * Identify the appropriate steps in an outbreak investigation. * Assume the role of an epidemiologist to analyze disease data, design an epidemiologic study, and evaluate prevention and therapy for chronic and infectious diseases. Essential Questions 1. What is vaccination?