Sign Up Now
Get instant access to over 1 million+ study documents
OR
Already registered? click here to login
By creating your account, you agree to our terms of service, privacy policy and student honor code.
Microbiology
1
Agar is a gelling agent derived from red algae that is commonly used in microbiology laboratories. Unlike other gelling agents such as gelatin, agar is not affected by heat and remains solid at boiling temperatures. This property makes agar an ideal medium for growing microbes, as it can be sterilized by heating without damaging the cells. In addition, agar is less expensive and easier to prepare than other types of media, making it a popular choice for use in the laboratory. The first scientist to use agar for growing microbes was German microbiologist Robert Koch, who employed the medium to culture bacteria in the late 19th century. Thanks to its many advantages, agar continues to be an important tool in microbiology research today.
2
In the late 18th century, a French scientist named Louis Pasteur was studying the process of fermentation. Fermentation is a chemical reaction that occurs when yeast or bacteria break down sugars in food. This process can be used to produce alcohol or to preserve food. Pasteur was curious about how fermentation occurred, and he began to investigate the role of microbes in the process. He found that different microbes were responsible for different types of fermentation. For example, yeast was responsible for fermenting beer, while bacteria was responsible for fermenting milk. Pasteur's work helped to improve our understanding of fermentation and paved the way for new discoveries in microbiology.
3
The swan-necked flask is a type of glass container with a long, curved neck. The neck of the flask is sealed at one end, and has a small opening at the other. This allows air to enter the flask but not exit. Pasteur used swan-necked flasks in his experiments on spontaneous generation to prove that microbes could not spontaneously generate in the presence of air.
4
Attenuated microbes are live microbial cells that have been deliberately weakened so that they are no longer virulent. The process of attenuation involves exposing the cells to conditions that promote mutations, such as high temperatures or UV radiation. The purpose of attenuation is to create a safe vaccine that can still provide immunity.
Microbiology & Spontaneous Generation Microbiology is the study of microbes that are practically invisible to the human eye. Although microbes are usually associated with causing and aiding disease, they are essential organisms in the ecological world. They allow for life to thrive and are of great interests for food, scientific, and medical industries (Black, 2008). The term microorganism encompasses bacteria, protozoa, fungi, archaea, parasites, algae, prions, and viruses (Nester, Anderson, &
Question 14 The main criteria that should be considered is the type of infection based on microbiological evidence. Additionally, it is important to determine whether or not there was onsite mishandling which may have led to E. coli being present on particular products. The scope of the outbreak would also be important, as it would show either a local outbreak, or a more widespread one that would indicate a larger producer. Question
Microbiology Microbes Microbial metabolism is referred to as the manner in which microbes find their nutrients and energy that makes them live and reproduce. The paper will describe metabolic requirement for Staphylococcus aureus and Clostridium botulinum that provide them with environment that support their growth. The paper also summarizes mechanism of action by which drug inhibits the growth of Pseudomonas aeruginosa. Staphylococcus aureus Staphylococcus aureus is as facultative anaerobic gram-positive cocci that is able
Microbiology How to discover the causative agent of a new disease and its mode of transmission: The standard epidemiologic triangle model of infectious disease causation, asserts that communicable diseases are the result of the contact between the agent, surroundings and the host with the vector. Transmission in particular happens if the agent leaves the host or reservoir via an exit portal and then it is moved (transmitted) in a particular form and
This is primarily because two sprouting facilities in two states were linked with the implicated alfalfa sprouts and only one lot of seeds from Idaho State was common to Michigan and Virginia. Therefore, the likely point of contamination include during growth or harvesting, seed processing, in storage, or during transportation of the food. This implies that the identification of the actual point of contamination requires collection of more information
Quality in the Clinical Microbiology Laboratory The objective of this study is to define quality in the microbiology clinical laboratory including its major components. Toward's this end, this study will examine what constitutes quality in the laboratory setting and will list and discuss the activities in the laboratory that are designed to assure quality from collection of specimen to reporting. Quality management in the clinical microbiology field was initiated in the decade