Bacterial Growth Requirements

Microorganisms can survive where most cannot due to their size, nutritional needs, energy requirements, and are very good at adapting to different environments (Black 2008). Microorganisms require two things to live a long healthy life, and these are physical and nutritional factors. Physical factors include pH, temperature, oxygen concentration, moisture, hydrostatic pressure, osmotic pressure, and radiation (Black 2008). Nutritional factors include carbon, nitrogen, sulfur, phosphorus, trace elements, and sometimes vitamins (Black 2008). For the purpose of this exercise I will focus on E. coli. Pathogenic Escherichia coli will be discussed since it is a common, but dangerous bacterium. E. coli in humans is found in the intestines. This bacterium is very durable, meaning that it is well-adapted to its habitat. For example, it can grow with glucose being the only food source. This bacterium can also grow with or without O2. If located in anaerobic habitat it can it will use the fermentation process producing mixed acids and gases (Todar 2012). This bacterium has shown that it can also use anaerobic respiration when NO3 or NO2 is available. Chemicals, pH, temperature, are a few signals that determines how E. coli will respond (Todar 2012). When it senses a change in the environment it can swim toward or away from anything useful or harmful. Temperature can also affect E. coli. A change in temperature allows E. coli to change pore diameter of its outer membrane to accommodate certain nutrients, or to exclude something harmful. E. coli also rations its nutrient supply by taking in account how much is available in its environment. This means that it will not take in nutrients unless it has enough to feed more bacteria that will be produced (Todar 2012). As you can see, this amazing microbe has the ability to adapt to its environment and in some case overcome. Imagine the microbes that are out there that has not be identified yet. Reference Black, J. (2008). Microbiology principals and explorations. (7th Edition ed. ). Jefferson City: GGS Book Services. Todar, K. (2012). Todars online textbook of bacteriology. Retrieved from http://www. textbookofbacteriology. net/e. coli. html Bacterial Growth Requirements Microorganisms can survive where most cannot due to their size, nutritional needs, energy requirements, and are very good at adapting to different environments (Black 2008). Microorganisms require two things to live a long healthy life, and these are physical and nutritional factors. Physical factors include pH, temperature, oxygen concentration, moisture, hydrostatic pressure, osmotic pressure, and radiation (Black 2008). Nutritional factors include carbon, nitrogen, sulfur, phosphorus, trace elements, and sometimes vitamins (Black 2008). For the purpose of this exercise I will focus on E. coli. Pathogenic Escherichia coli will be discussed since it is a common, but dangerous bacterium. E. coli in humans is found in the intestines. This bacterium is very durable, meaning that it is well-adapted to its habitat. For example, it can grow with glucose being the only food source. This bacterium can also grow with or without O2. If located in anaerobic habitat it can it will use the fermentation process producing mixed acids and gases (Todar 2012). This bacterium has shown that it can also use anaerobic respiration when NO3 or NO2 is available. Chemicals, pH, temperature, are a few signals that determines how E. coli will respond (Todar 2012). When it senses a change in the environment it can swim toward or away from anything useful or harmful. Temperature can also affect E. coli. A change in temperature allows E. coli to change pore diameter of its outer membrane to accommodate certain nutrients, or to exclude something harmful. E. coli also rations its nutrient supply by taking in account how much is available in its environment. This means that it will not take in nutrients unless it has enough to feed more bacteria that will be produced (Todar 2012). As you can see, this amazing microbe has the ability to adapt to its environment and in some case overcome. Imagine the microbes that are out there that has not be identified yet. Reference Black, J. (2008). Microbiology principals and explorations. (7th Edition ed. ). Jefferson City: GGS Book Services. Todar, K. (2012). Todars online textbook of bacteriology. Retrieved from http://www. textbookofbacteriology. net/e. coli. html Bacterial Growth Requirements The nutritional requirements of a bacterium such as E Coli are revealed by the cell’s elemental composition. These elements are found in the form of water, inorganic ions, small molecules and macromolecules which serve either a structural or functional role in the cells. Bacteria thrive by four things oxygen, food (nutrients), warmth and time but two others can be moisture and acidity. Nutrients are needed for energy, nitrogen (for DNA and proteins), phosphorus (for energy), and others. Warmth is needed so the bacteria can stay warm. Oxygen is needed so the bacteria can make energy and time is needed for the bacteria to complete binary fission over and over again. Acidity is needed so the bacteria can survive in its environment. Highly base or acidic environments may harm the bacteria and hinder its lifespan. In order to survive and grow, microorganisms require a source of energy and nourishment. Bacteria are the most primitive forms of microorganisms but are composed of a great variety of simple and complex molecules and are able to carry out a wide range of chemical transformations. Depending on their requirements and the source of energy used they are classified into different nutritional groups. Most microorganisms grow well at the normal temperatures favored by man, higher plants and animals. Certain bacteria grow at temperatures (extreme heat or cold) at which few higher organisms can survive. Most bacteria grow best in an environment with a narrow pH range near neutrality between pH 6. 5 and 7. 5. Microbes contain approximately 80-90% water and I f placed in a solution with a higher solute concentration will lose water which causes shrinkage of the cell. Some bacteria have adapted so well to high salt concentrations that they actually require them for growth. Nitrogen and phosphorus are particularly critical because they often control the rates of photosynthesis. Carbon is significantly more abundant than either of them and oxygen and sulfur are more abundant that phosphorous. Nitrogen and phosphorous are less available to plants relative to their growth requirements than are other elements. Phosphorus is often in short supply and limits plant and algae growth. Nitrogen is a major constituent of all proteins and of all living organisms. A lack of nitrogen can limit growth of plants, since nearly three quarters of its atmosphere consists of natural gas, N2. REFERENCES A New Way to Look at Microorganisms. (n. d). American Scientist, 93(6), 514. Bacterial Growth Requirements The nutritional requirements of a bacterium such as E Coli are revealed by the cell’s elemental composition. These elements are found in the form of water, inorganic ions, small molecules and macromolecules which serve either a structural or functional role in the cells. Bacteria thrive by four things oxygen, food (nutrients), warmth and time but two others can be moisture and acidity. Nutrients are needed for energy, nitrogen (for DNA and proteins), phosphorus (for energy), and others. Warmth is needed so the bacteria can stay warm. Oxygen is needed so the bacteria can make energy and time is needed for the bacteria to complete binary fission over and over again. Acidity is needed so the bacteria can survive in its environment. Highly base or acidic environments may harm the bacteria and hinder its lifespan. In order to survive and grow, microorganisms require a source of energy and nourishment. Bacteria are the most primitive forms of microorganisms but are composed of a great variety of simple and complex molecules and are able to carry out a wide range of chemical transformations. Depending on their requirements and the source of energy used they are classified into different nutritional groups. Most microorganisms grow well at the normal temperatures favored by man, higher plants and animals. Certain bacteria grow at temperatures (extreme heat or cold) at which few higher organisms can survive. Most bacteria grow best in an environment with a narrow pH range near neutrality between pH 6. 5 and 7. 5. Microbes contain approximately 80-90% water and I f placed in a solution with a higher solute concentration will lose water which causes shrinkage of the cell. Some bacteria have adapted so well to high salt concentrations that they actually require them for growth. Nitrogen and phosphorus are particularly critical because they often control the rates of photosynthesis. Carbon is significantly more abundant than either of them and oxygen and sulfur are more abundant that phosphorous. Nitrogen and phosphorous are less available to plants relative to their growth requirements than are other elements. Phosphorus is often in short supply and limits plant and algae growth. Nitrogen is a major constituent of all proteins and of all living organisms. A lack of nitrogen can limit growth of plants, since nearly three quarters of its atmosphere consists of natural gas, N2. REFERENCES A New Way to Look at Microorganisms. (n. d). American Scientist, 93(6), 514.

Discussion Question Assignment Example | Topics and Well Written Essays - 250 words - 10

Discussion Question - Assignment Example If the company will just rely on company-owned stores, it will not be able to achieve the international exposure that it needs. One believes that franchising is the key to increasing the company’s market share worldwide. It will not be financially draining for the company unlike if company-owned stores are established. Another major organizational change which one proposes is for the company to require their store managers to conduct weekly meetings with the sales staff. This is being suggested because one believes that the sales staffs are the people who would know exactly what the customers want. At present, the sales staffs are not consulted about the scents or products that the customers prefer. One believes that management should give importance to the sales staff by asking feedback from them. This could be done through the weekly meetings. Furthermore, this will motivate the sales people more because they will realize that their opinions are important to the company. The organizational changes proposed above will hopefully help the company improve its profitability and at the same time lead them to the road towards global success. The implementation of the suggested changes may take some time but it will definitely benefit the company in the long

1.Critically examine assessment and interventions for a specific Essay

1.Critically examine assessment and interventions for a specific client group (dual diagnosis) presenting with alcohol or drug misuse - Essay Example The slightly modified term â€Å"co-occurring substance misuse and mental health problems† refers more specifically to the observation that these co-occurring substance use and mental issues are frequently associated with the misuse of drugs and alcohol in ways that may complicate and contribute to psychological illness. In this context, the term â€Å"substance misuse† refers to the use of illegal drugs, the illicit use of prescription drugs and/or the excessive use of alcohol. When substance misuse and mental health problems co-occur in the same individual, this is termed a â€Å"dual diagnosis† or â€Å"co-morbidity†, although it should be noted that these two terms may apply more generally to any two conditions existing simultaneously in the same individual. The increased awareness of the co-existence of mental health and substance abuse issues in clients seeking or requiring psychological treatment represents an acknowledgement that mental health issues may have complex, multi-faceted origins that require individualized approaches to treatment and recovery (Drake & Wallach, 2000). It has also drawn attention that many individuals who are substance abusers are not simply guilty of criminal or excessive behaviours, but may abuse drugs or alcohol in the context of undiagnosed or untreated mental illness (Brems et al., 2006). The purpose of this essay is to explore some of the current assessment and therapeutic approaches to the treatment of clients presenting with this type of dual diagnosis, including cognitive behavioural therapy (CBT), motivational interviewing (MI), and brief interventions. Cognitive behavioural therapy is a therapeutic approach that is based on the premise that psychological issues are the product of aberrant thought processes and associated behaviours (Mueser et al., 2005). The goal of this approach is