Abstract Four pure, unidentified cultures of (gram positive cocci) bacteria, labelled A-D were cultured on various agar media. Also an API test was simulated to identify another unidentified bacterium. Identification of bacteria is important when choosing an effective treatment for a microbial-causing illness. This experiment focused on the cultural and biochemical characteristics of bacteria in aid of identification. Under aseptic conditions, each of the four […]

Fighting Bacterial Growth The purpose of this lab was to determine the effectiveness of antiseptics, disinfectants, and antibiotics on bacteria. The hypothesis was that if bleach was used, it would be the most effective because bleach is commonly used to clean and disinfect various things. The variables that were tested were antibacterial soap and Scope mouthwash for the antiseptics; bleach and ammonia for the disinfectant; […]

Bacteria Growth Requirements Microbiology Life as we now it has ended. What is left you ask? Well it is said the only thing that could survive an incident that could end our known way of life is a roach and a pack or Twinkies. In truth the great survivor would be microorganisms. Microorganisms can survive where most cannot due to their size, nutritional needs, energy […]

Title of the Experiment: Enterobacteriaceae Identification: The Enterotube II System Learning Objectives: After completing this exercise we were able to inoculate an unknown bacterium that belongs to the Enterobacteriaceae by using technology effectively with a Enterotube II. An Enterotube II is a miniaturized multi-test system for rapid identification of enterbacteriaceae. We then evaluated the test results and generated a five-digit code for the unknown bacterium. […]

In the world, some people see bacteria as something that is harmful and that causes nothing but illness and infections. Bacteria can actually be helpful as well. It can provide vitamins to your body, help digestion, destroy bad organisms, help make medicines and also help out with the environment. In this research paper, it will describe two bacteria that are helpful and sometimes harmful to […]

Rapid detection and identification of bacteria in food and clinical laboratories Abstract Modern technological progress has affected how microbiology is practiced. There is emphasis on the minimalisation of laboratory costs, cost-efficiency and reliability of tests for efficient bacterial identification from food cultures. Before using any technology, it is recommended that the products’ performance characteristics be first tested, particularly as theses characteristics, are often not determined […]

OBJECTIVE: 1. To distinguish the bacteria abilities to metabolize various substrates and end products formed. 2. To observe the growth of different bacteria species in term of structures and its morphology based on different chemical substance applied. 3. To observe physiological and immunological properties utilized by different species of bacteria. INTRODUCTION: Bacteria biochemical testing can determine the types and numbers in terms of colony forming […]

Archaea is considered to be another domain, besides Prokaryotes (which include bacteria) and eukaryotes (which include plants, animals, fungi and protests). Eukaryotes have a well-defined nucleus, membrane cell structure. On the other hand prokaryotes have a well-defined cell wall and contain an irregular nucleus. Archaea was defined in the 1970’s, and it was observed that they survived at high temperatures (above 100 degrees centigrade), pressure […]

Genetic transformation is a process that primarily is inserting new DNA into an organism to change that organism’s trait. This process has many useful benefits when used correctly in different organisms. In this lab, bacteria was transformed by inserting DNA for Green Fluorescent Proteins. The DNA for these proteins were taken from bioluminescent jellyfish Aequorea victoria. One of the main lessons of the lab is […]

Students were assigned unknown organisms and the objective of the lab tests was to identify of the unknown organisms. A microorganism can be identified as an organism that can be through the aid of the microscope. In a typical condition, microorganisms are said to contain cells that are in singular mode. A perfect example of such microorganisms is such as bacteria, fungi, some types of […]