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Essay on Microorganisms

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SOP for Masters in Microbiology

During my graduation I have been exposed to the basics as well as practical aspects of microbiology. I took full advantage of the opportunity during practical sessions to evaluate and monitor microbial cultures and samples. Participation in seminars and conferences further sparked my interest. I haveВ engaged myselfВ regularly in extracurricular activities such as creative writing, singing and c...

Serratia marcescens & Bacillus cereus Report

The patient presenting with vomiting likely has food poisoning due to the contamination of a starchy dish such as pasta salad or rice. Bacillus cereus can be characterized by nausea and vomiting within ½ - 6 hours after ingesting the contaminated food. Other symptoms may include abdominal pain and headache. There is also a diarrheal type of food poisoning due to B. cereus, however in this instanc...

Micro Lab - Bacteria

Briefly describe the steps required to aseptically transfer bacteria from an unknown to a tube of liquid broth. Answer: To aseptically transfer bacteria from an unknown to a tube of liquid broth you have to flame the loop or wire before you begin to sterilize it. Then you remove the caps from the tubes and flame the mouths of the tubes to prevent air-borne contamination. Next, you have to pick up ...

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Identification of Microorganisms by Differential Staining

Finally, in the case of gram-negative bacteria, E. coli is visualized as pink capsular colonies in the differential staining slides. Utilized as a main fermenting agent with tremendous genetic diversity, it has historically been used in the making of beer, bread and rice wine. (US National Library of Medicine. May 2010)). While E. coli does exist in the human body, introduction of harmful variants...

Identifying Micrococcus luteus

Initial antibiotic selection depends on age, past history, extra-articular infection, and fluid Gram stain findings, (Beers, & Berkow, 1999).” In hospitals, the bacteria can be transmitted by hospital staff who may have failed to wash their hands properly by going from one patient to another. The main transmission path is direct or indirect contact with contaminated persons or objects. It ca...

Identifying Unknown Bacteria

Staphylococcus aureus is a spherical shaped gram-positive bacterium that is responsible for many diseases. This bacterium is most commonly found in the respiratory tract and on the skin, and although it may not always cause disease, it is the common cause of respiratory and skin infections and frequently associated with food poisoning (Lindsay 2008). This bacterium has also had its entire genome ...

Lab Report about Simple Staining of Microbes

It is suggested that a smaller amount of microbes are smeared on the glass slide to prevent the sample from looking so dense under the microscope, thus preventing us from seeing the shape and size clearly. Next, increase the amount of the negative stain to ensure more visibility of the cells under the microscope. Lastly, clean the lens of the microscope before use to avoid confusing images in the ...

Microbiology Laboratory Report

The crystal violet iodine complex washed away and leave the negative gram bacteria colourless. On the other side, grams differentiator has dehydration effect of the cell wall of gram positive bacteria which causes the pores of cell wall shrink. The crystal violet iodine complex tightly bound into multi-layered, staining of bacteria purple. The colourless negative gram bacteria can be visible with ...

Effects of Tonicity on Cell Membrane

The potato was flexible and not too rigid or flaccid. The potato placed in solution C was the most similar to the control potato, which was not placed in any fluid. The purpose of this experiment was to be able to differentiate and recognize what Hypertonic, Hypotonic and Isotonic are and how it looks through the microscope. The members of group one were able to differentiate and recognize this! T...

Spread of Infection by Microorganisms

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Bacterial Transformation Lab Report

In the plate containing –pGLO LB/Amp, there was no bacteria found on the plate. This is because a plasmid was not present to transform the bacteria to become resistant. On the plate containing –pGLO LB, there was TNTC with bacteria. This is because it is the control plate and nothing in the bacteria or the plate was changed or transformed. From this lab, there were no errors. Everything ran pe...

Phylum Sarcodina

Phagocytosis is involved in the acquisition of nutrients for some cells, and, in the immune system, it is a major mechanism used to remove pathogens and cell debris. Bacteria, dead tissue cells, and small mineral particles are all examples of objects that may be phagocytosed. eat algae, bacteria,other protozoans,and tiny particle of dead plant. Inside of amoeba is jelly like fluid called cytoplasm...

The Pandemic Virus

There was lots of evidence in the movie that supports Lederberg’s view on this. When people first started getting sick and dying, it spread so fast people didn’t know what to do or how to handle the virus. The virologists also didn’t discover that the virus was airborne until at the hospital were the doctors isolated the infected patients with the virus from the other patients and a man in a...

The Structure of Cells

One of the most common prokaryotic cells would be bacteria, they are the smallest cellular organism. It has no true nucleus but it does have a nucleiod region where its DNA is found. It has the flagella for movement on the outside along with the cilia. The cell membrane controls what goes in and out of the bacteria cell. The cell wall protects the bacterial cell and gives it its shape and structur...

Formation of Ascospores

Then, new septa arev formed to divide the cells int three. The three cells are binucleate crook cell, uninucleate tip cell and a uninucleate basal cell. The binucleate crook cell would develop into the ascus and is called Ascus mother cells. The two nuclei in the ascus mother cell fuse to form one diploid nucleus. The cell that contains the diploid nucleus elongate. The diploid nucleus under goes ...

Unicellular organism

Scientists discovered all the differences between multicellular organisms and unicellular organisms and this laid the foundation for the rest of biology to develop. The advanced study of the structure of all animals and plants would not be impossible without proper knowledge about the cell structure of these organisms, since the cells are the primary life force and no organism can be alive without...

Fighting Bacterial Growth

Another error was that since these Petri dishes were left out for 2 days, there was re-growth in the bacteria in and around the zones of inhibition, like the ammonia in the individual data. In the lab, the chemicals were tested on bacteria to see how much of the bacteria will get killed. What kind of items then would create the most bacterial growth? If bleach was used on different kinds of bacter...

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