Microbiology
Unit 4 Exam
Answer the questions fully, but do NOT more than is need to answer the questions (don’t write on and on and on….). Do Not COPY AND PASTE from any source. Please use your own words to answer. No plagiarism. You Must use Turnitin to submit the exam.
Water and Sewage Microbiology:
1. List the steps of in a water purification plant.
a. Screening to separate the large contaminants from the water
b. Coagulation to attract small contaminants
c. Sedimentation where water sits and finishes coagulation
d. Filtration to remove any small remaining contaminants and particles
e. Disinfection by disinfecting chemicals such as chlorine to kill microorganism or remaining bacteria
2. Explain the differences between primary, secondary, and tertiary sewage treatment.
a.
…show more content…
Primary treatment involves the process of sedimentation. This process removed suspended solids form the waste. Secondary treatment removes and dissolves biodegradable matter from waste. Tertiary treatment involves the removal of any other contaminate present in the waste.
3. Describe a septic tank and explain its function.
A septic tank is large water tight tank that allows the removal of wastewater from a building and begins the primary treatment process by separating solids and organic materials before the wastewater is disposed.
Food and Dairy Microbiology:
1. Define pasteurization and describe its use in the dairy industry.
a. Pasteurization is using a high temperature for a short period of time to kill organisms that live in the milk. In the dairy industry, it is used to kill organisms that cause disease and help the milk to not spoil.
2. Explain the accepted standards in food and dairy analysis.
a.
3. List the steps in cheese making.
a. Choose Quality Milk
b. Standardization- includes
I expect to learn the biochemical differences in bacteria from this lab. Also, how to identify different species of bacteria. Material & Methods For the first day of the practical, an unknown specimen was provided
Due October 19th, 2015 Erin Gibbs: 200270053 Dr. Andrew Cameron Bio 222 Written Assignment 1 1. Health officials realized that the mysterious illness was not caused by a bacterium because the pathogen would be identified quickly in comparison to a virus, which is more complicated (CBC, 2013). 2. It was hard to identify the infectious agent because SARS presented as flu-like symptoms with a rapid onset and is similar to the common flu (CBC, 2013). People who had other underlying health problems made it difficult to identify symptoms of SARS because it made it hard to differentiate (CDC, 2013).
Answer these questions in their entirety. For each of these questions, you should do some research and cite the sources you’ve found to support your position You may use the book as one source. Bring the book and your notes to class. Look for other sources by researching academic articles, newspaper articles, magazine articles, excerpts from books, etc. to support your answers.
Being able to identify unknown microbes from systematic testing is what makes the field of microbiology so important, especially in infectious disease control. Using the testing procedure laid out by the microbiology field we are able to identify unknown bacteria present in our everyday lives, and along the way learn a lot about their characteristics that separate them from other types of bacteria. Being able to do this is vital in order for us to understand why microbes are present in certain places, how they are able to grow and what restricts their growth, that way they can be combatted if necessary. These techniques for determining unknowns are also important for isolating and testing infectious disease microbes in order to prevent spreading. Another important aspect of being able to identify unknown microbes is the
The unknown bacteria was then tested on multiple selective and differential media. Growth was present on the MacConkey Agar and the colonies were the same color as the plate, which told me my bacteria was gram negative and did not ferment lactose. There was no growth on the Mannitol Salt Agar, and this told me the unknown was not salt tolerant and did not
1. A viruses is a non-living infection agent and can be found anywhere. it has no cell organelles. They are eliminated by the immune system. Viruses are the smallest in size of all the microbes.
However, in real life, there are several ways to purify water, including boiling, chemical treatment, and filtration. A study published in the Journal of Environmental Health Sciences found that ceramic water filters are an effective way to remove bacteria from contaminated water sources (Wegelin et al., 1998). Nutrient Requirements: In the book, the characters struggle to find food, and they are forced to hunt and gather their own food. However, it is important to understand the nutrient requirements of the human body to survive.
Introduction The purpose of this lab is to use control variables to help identify different macromolecules. Biological systems are made up of these four major macromolecules: carbohydrates, lipids, proteins and nucleic acids. Carbohydrates are sugar molecules (monosaccharides, disaccharides, and polysaccharides) which make them the most abundant macromolecule on the earth. Lipids (oils and fats, phospholipids and steroids) are insoluble in water and perform many functions such as energy source, essential nutrients, hormones and insulators (Lehman, 1955).
Exercise 14: Unknown Identification Lab Report The purpose of the study was to identify the unknown bacterium using various biochemical tests in addition to using scientific methods in determining the outcome of the hypothesis. Each biochemical test will help determine the bacteria based on specific characteristics of each organism. I was giving unknown number 232. The first procedure that needed to be done after obtaining unknown bacterial mixture was to isolate the two bacteria in a pure culture using the streak plate method described in Microbiology Laboratory Manual Eight Edition. The material used was trypticase soy agar (TSA) plate, nutrient plate, starch agar, hydrogen peroxide, iodine reagent and microscope.
The effects of alcohol on Biological Membranes. Introduction In this experiment it will be analysed the damage alcohols can have on biological membranes. Membranes are made up of lipids and proteins. Membranes usually help maintain the balance in a cell as it holds all the cellular materials.
Chlorine is accurately put so as to prevent active chlorine remaining at the opening of the plant. Advantages And Disadvantages I. Advantages: - Desalination plants can provide clean drinkable water in areas where no natural supply of drinkable water exists. II. Advantages: - water turns of safe to drink and it is not dangerous or isn’t hazardous to any living thing. III.
The process of pasteurization is when the bacteria is heated to kill the infectious disease and then controlled once the bacteria is cooled. The controlled bacteria are then safe to inject towards humans and
My knowledges of molecular biology, biochemistry and microbiology have grown, but I know there is a lot to learn and, as always, to keep learning is my final goal. This is the moment to challenging myself and pursuit other experiences in an area that involve Biochemistry and Molecular Biology. I want to continue my education at the Graduate Program in Biochemistry and Cell Biology at Rice University. This program is the best option to continue improving my scientific and professional skills. The privileged research conditions of your university, the facilities, the faculty and the outstanding researcher lines make this university the perfect place for a doctoral training.
The action of the government under superfund are divided into two i.e. removal action which is immediate response to eliminate further threats from the waste site and remedial action which is to provide long term solutions in order to cleanup the toxic waste site. (Mark, 1994). In meeting standards, two general approaches can be considered in setting up a standard for cleanup in various toxic waste sites; there should be equal standards for states or federal uniform numerical concentration limits and a specific site standard that is based on the evaluation of factors like health of human ecological risk, technical feasibilities and as well cost. (Pieter,
Introduction By the year 2025, the Philippines is believed to be brought to a water crisis if no new sources of water are developed or found to meet the growing demand of the citizens. (Sapnu, R., Balabo, D., & Cervantes, D., 2007) "There is a Japan International Cooperation Agency study that says that if we will not conserve water, there may be some problems. But of course we can always start conserving now and look for other sources," Lopez (2013) said. Studies have shown how water conservation and appropriate water utilization are significant as early as today.