Common Microorganisms Essay examples

Common Microorganisms Essay examples

Length: 1014 words (2.9 double-spaced pages)

Rating: Strong Essays

Open Document

Essay Preview


Microorganisms such as bacteria, fungus, mold, and yeast are present and common in almost every environment on earth. The normally microscopic organisms can easily be seen using differing types of agar, which creates an ideal environment for the organisms to form colonies, which are groups of hundreds of organisms that can be seen with the naked eye. In order to see individual microorganisms, it is necessary to use the magnification of a high-powered microscope.
These techniques of microbiology are used in the following five experiments. The first experiment used Trypticase Soy Nutrient Agar (TSA), which can grow a wide variety of organisms and contains casein and soybean meal and a minute NaCl, to study the effectiveness of alcohol as a skin antiseptic. The second experiment tested the effectiveness of different kinds of mouthwashes as antiseptics using TSA as well. Experiment number three explored the normal human flora existing on skin and in nasal cavities, and two types of agar were used, including TSA and Mannitol Salt Agar, which contains manitol sugar, phenol red, and 7.5% NaCl. Mannitol Salt Agar tests for the presence of staphylococci bacteria that can survive in the salt that inhibits the growth of most other bacteria. Some forms of staph bacteria ferment mannitol and produce a yellow color around the colonies, which can easily be seen against the red background. The fourth experiment studied the number of bacteria in a diluted sample of uncooked hamburger meat using nutrient agar and a Quebec counter to count the colonies. The final experiment involved the growth of yeast cells under aerobic and anaerobic conditions.

- Trypticase Soy Nutrient Agar
-     Mannitol Salt Agar
-     Sterile alcohol swab
-     Listerine mouthwash
-     Tubes of nutrient agar
-     Diluted hamburger meat
-     Quebec colony counter
-     Apple juice
-     Anaerobic yeast culture
-     Hemacytometer
-     Iodine
Experiment 1. Effectiveness of alcohol as an antiseptic
1)      All experiments must be done in a sterile environment; Lysol can be used to sterilize the a...

... middle of paper ...

...ide had a lot of large tan colonies and dense, small colonies. The Listerine side seemed to destroy all most all of these small colonies, but the larger colonies were actually more numerous. The other mouth washes used were salt water rinse and Scope. The salt water did almost no damage to the bacteria, and the Scope killed the most.
     In experiment three, there were a lot of different kinds of organisms persent on the agar. On the plate that contained nasal micro-organisms, large yellow colonies appeared on the Mannitol Salt Agar, indicating Staphylococcus aureus. On the TSA side, small creamy white colonies were also present. These could possibly be yeast. On the plate that contained the skin swab, there was a large amount of large, fuzzy white and black growth, which is mold. There was a single light-orange colony on the TSA side, possibly a growth of Flavobacterium.
     In the fourth experiment, there were a number of different kinds of colonies on the EMB plate with the meat swab. There were black dots, which indicate the presence of E-coli, pink dots, which indicate lactose-fermenters, and a few white and gray colonies.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Microbes As A Microorganisms Essay

- Microbe is a microorganism, that is known as a bacterium that cause diseases or fermentation. Microbes can have a powerful impact on each individual’s health and well-being. The role of antibiotics is through the influence of things that the cells of bacteria have. ("Microbe", 2017, p.2). This essay will briefly outline a range of common microbes that affect human health and discuss the benefits and risks of antibiotics, and discuss a range of therapeutic uses of microbes.  For many years antibiotics have treated respiratory infections....   [tags: Bacteria, Common cold, Microorganism]

Strong Essays
1090 words (3.1 pages)

Essay On Microorganisms

- Billions of microorganisms, living creatures’ invisible to the naked eye, live among us. Microorganisms reside everywhere, and exist in our beds, hair, water, skin, soil, furniture, clothes, air, and even our food. When we touch something, they adhere (attach) to our hands. Prokaryotes make up microorganisms (microscopic organisms without a nucleus or special organelles or structures), and present strong toxins to us eukaryotes (organisms with a nucleus and special organelles). The naked eye observes macroscopic organisms (large creatures) such as animals and plants, but only microscopes can perceive microorganisms (microscopic organisms)....   [tags: Bacteria, Microbiology, Organism, Microorganism]

Strong Essays
1174 words (3.4 pages)

Evaluating Methods Of Controlling The Growth Of Microorganisms Essay

- Evaluate methods of controlling the growth of microorganisms in industrial scale Bacteria can be found everywhere some harmless and some very dangerous. Therefore methods are used to prevent and control microorganisms. On an industrial basis this is done in the food industry, medical field pharmaceutical and biotechnology. As microorganisms can poison as well as kill by infectious diseases. One method of controlling microorganism growth is by using temperature when there is low temperature it reduces enzymes activity and slows down the growth of microorganisms....   [tags: Bacteria, Microorganism, Microbiology]

Strong Essays
1478 words (4.2 pages)

Microbiology Is The Study Of Microorganisms Essay

- Although many people do not know about microbiology, the scientific developments within this area are used in everyday life. Microbiology is the study of microorganisms, including bacteria, viruses, fungi and parasites. The study of microorganisms has allowed scientists to discover the pharmaceutical drugs and treatments; such as vaccines and antibiotics, which can be used to treat against the harmful species of microorganisms. The clinical use of these treatments have greatly reduced the mortality due to infectious disease, and have also contributed to the eradication or significant reduction and control of formerly devastating infections such as smallpox, polio and hepatitis, now rare in d...   [tags: Bacteria, Microbiology, Antiseptic, Infection]

Strong Essays
1522 words (4.3 pages)

Essay about Microbiology And The Study Of Microorganisms

- What is microbiology, and why is it important. Microbiology is the study of microorganisms. Microorganisms are too small to be seen by the naked eye. Microbiology utilizes microscopes and microscopy to observe the microorganisms. In general, microbes have many forms and functions and are important because they have both beneficial and detrimental effects on essentially every aspect of our planet. Beneficial Microbes are utilized or manipulated to create numerous good that people around the world consume....   [tags: Bacteria, Microbiology, Cell wall, Archaea]

Strong Essays
802 words (2.3 pages)

Essay on The Study Of Microorganisms Is Called Microbiology

- The study of microorganisms is called microbiology. Viruses, Bacteria, Protozoa, Fungi and Worms all come under this category. They have an incredible impact on our daily lives, even though these organisms are tiny and can only be seen when under a microscope. Named microbes for short, it is estimated that there are about 5 million trillion, trillion microbial cells Earth. The largest mass of living material on earth is constituted collectively by microbes. They are tied to the activities of all living things as they degrade organic matter and also provide key nutrients....   [tags: Bacteria, Microbiology, Escherichia coli]

Strong Essays
1082 words (3.1 pages)

Microorganisms: Staphylococcus Epidermidis Essay

- ... Microorganisms are in several groups depending on there preferred temperatures. The first type is Psyrophiles. These bacteria prefer cold weather. Usually found in negative five degrees Celsius to fifteen degrees Celsius. Generally located in the Antarctic and Artic regions feed by run off of glaciers. The next is Mesophiles. These bacteria prefer moderate temperatures of twenty five degrees Celsius to forty five degrees Celsius. These bacteria are typically found in the soil and live on humans....   [tags: skin, human body]

Strong Essays
776 words (2.2 pages)

Essay about The Community of Microorganisms that Reside in the Epithelia of Humans

- ... The final step for the DNA extraction was elution where the pure DNA was release. Proceeding the extraction of DNA the results of the 16s gene amplification were examined through gel electrophoresis it was analyzed by estimating the size of the PCR bands with marker bands. After measuring the success of the extraction, a technique called TA cloning was started. Cloning of PCR products was done by using partially purified amplified products with spin columns. Cleaved at the appropriate restriction sites and ligated into restricted vectors....   [tags: human body microbiome]

Strong Essays
1042 words (3 pages)

Microorganisms and the Great Potato Famine in Ireland Essay

- ... People naturally find it disturbing and dirty, however there are good types of Fungi, often referred to as friendly fungi. In 1928 Penicillin, one of the most famous of antibiotic drugs was discovered having derived it from the fungi called Penicillium. This discovery has since has a huge impact on helping people across the globe. However, not all is it seems, there are some nasty fungi that can cause diseases in plants, animals and people. A famous one being Phytophthora infestans. This caused the Great Potato Famine in Ireland in the mid 1800’s which resulted in a million deaths....   [tags: microbe, fungi, spreading ]

Strong Essays
837 words (2.4 pages)

Clorox Is Very Effective on Bacteria Essay

- ... what he was seeing was bacteria fungi and Protozoa he called his findings " animalcules" because of this knowledge it triggered what is called the enlightenment age of biology. In 1678 leeuwenhoek sent his data and information along with detailed drawings of his findings to the Royal Society of London. The newfound information of the kassim,2 existence of bacteria baffled the inhabitants of Europe they realized they got sick because of bacteria not bad omens ....   [tags: ridding surfaces of microorganisms]

Free Essays
767 words (2.2 pages)