Micro-Organism Biology of Mosquitoes - Click to Solution

Question: Discuss about the Micro-Organism for Biology of Mosquitoes. Answer: Micro-organisms are living organism which is too small to be seen by naked eye and is visible under a microscope. It may be unicellular or multi-cellular or in clusters. It is present everywhere on earth and plays a significant role in maintaining the ecosystem. It helps in oxygen production, decomposition of organic material, providing nutrient to plants and marinating health. But some are pathogenic and cause disease in plants and humans. The microorganism is classified into six types according to their specific function. Each type has their own cellular composition, morphology, locomotion and production. The features of different kinds of micro-organisms are as follows: Bacteria: These are a prokaryotic unicellular organism. Its cell wall is made up of peptidoglycan, and they divide by binary fission. According to shapes, it is classified in to four types-bacillus (rod-shaped), coccus (spherical), spirilla (spiral) and Vibrio (curved shape). They locomote using flagella. It is also classified as gram positive and gram negative bacteria due to a difference in cell wall structure and a way the structure stains. According to gaseous exchange, it is divided into anaerobic, aerobic and facultative anaerobes. It is also divided into heterotrophs, autotrophs or saprophytes according to the way they utilize energy. Archaea: One feature that distinguishes archaebacteria from true bacteria is its cell wall structure. It lacks peptidoglycan in their cell wall. They can survive in adverse environmental condition. Based on these characteristics, it is divided into halophiles (living in the saline environment), thermophiles (found in extremely hot temperature), psychrophiles (living in cold-temperature) and methanogens (methane-producing organisms). They utilize different energy sources like hydrogen, carbon dioxide, and sulfur. They use sunlight using bacteriorhodopsin pigments (Madigan et al. 2012). Fungi: Fungi like mushrooms, molds and yeast are eukaryotic organisms. These are multi-cellular, and cell wall is composed of chitin. They may be decomposers absorbing organic material from environment, symbionts having a symbiotic reaction with plants and parasite harming the host. Absorption takes place by hyphae and release of spores. Protozoa: These are unicellular eukaryotes. They obtain nourishment through the specialized structure, and their cell wall is composed of cellulose. They have a whip like flagella, tiny cilia, and pseudopodia for locomotion. There is great diversity in protozoa and different means of nutrition (Lwoff 2014). Algae: Algae or Cyanobacteria may be unicellular or multicellular. They live in a damp environment and obtain nourishment by photosynthesis. Viruses: Virus is non-cellular consisting of DNA or RNA and surrounded by a protein coat. Although they are microgorganism they also behave as the non-living organism. This is because it does not reproduce outside host cells and they cannot metabolize on their own (Hattaf et al., 2012). Some microorganism is beneficial for humans while some may be harmful and cause diseases. Commensal is organism that causes no harm to host cells. The human gut contains a variety of microorganism, but there may be some bacteria in food which has a beneficial effect on health. They are commensal bacteria and have a probiotic effect. They supply the host with necessary nutrients and defend against pathogens (Kamada et al. 2013). Pathogens have a contrasting role from commensals. These are harmful microorganism responsible for the causing major diseases in humans and plants.They invade the host through different pathways and reproduce inside the host to cause different diseases (Ostfeld 2015). Microbes are present everywhere in the environment. They develop the ability to adapt to the different environmental condition. They are transmitted in the environment in various ways for their survival. Disease or infection occurs when microbes are transmitted from one person to another by coughing or sneezing. The microbes travel through the air to other person and causes diseases like common cold, flu and tuberculosis. Close contact with body parts also passes germs from one individual to others. Examples are HIV, which causes AIDS and Neisseria gonorrhea which causes gonorrhea. These microbes move to another person through sexual intercourse. Bacteria also enter the body by touching infectious materials like feces. Rotavirus and Giardia lambia are passed through this way. It may also be transmitted through droplet transmission and contamination of soil and water. Example Pseudomona aeruginosa grows in the warm and moist area (Clements 2012). Microbes gain access to entry and exit of the human body through two ways-by mucosal surface within the body such as respiratory tract, digestive or urinary tract and by epithelial surfaces such as damaged skin due to insect bites or wounds. As they enter the body, they invade and infect the host cell and then escape. Horizontal transmission takes place by body surface or through the blood stream. Vertical transmission occurs by the placenta during birth or by the colostrums. Infectious diseases are caused by microorganisms like virus, bacteria, fungi and parasites. The disease does not occur abruptly after entry into the human body. It follows a series of events which lead to the appearance of diseases. This chain consists of pathogens, mode of transmission, route of entry and a susceptible host to infect. The pathogen is the first link in the infection chain. Immune systems in the body also act to fight against the entry of foreign body. The level of exposure that leads to diseases depends on the virulence of microorganism, the resistance of host cell and amount of microorganism entering into the body. Certain groups of people are more vulnerable to infection because of weak immune systems. Example are children, elderly and immune-compromised patients (Nash et al. 2015). The chain of events includes entry of infectious agent into a susceptible host, exit, and transmission to the new host. All the events occur in chronological order for an infection to develop. The first step is colonization when microorganism enters the body, grows and multiplies. Entry occurs through wounds or oral mucosa. Some colonize at the site of entry while many migrate to cause systemic infection in different organs. The disease occurs when the immune system cannot destroy pathogen and pathogens enter the body to cause damage by release of toxins or destructive enzymes. Example-Clostridium tetani release toxins that paralyze muscles. Continuous infection occurs only when the body is not able to fight the pathogen after initial infection. For repeating any infectious cycle in the new host, pathogens have to leave existing reservoir and cause infection in the new host. Route of transmission of infection has already been discussing above. For a disease to occur, organism attache s to the target site, multiply rapidly and obtain nutrients from host cells and survive an immune attack from host cells. This multiplication of microorganisms leads to an appearance of various symptoms in the human body which helps to diagnose diseases. Example Escherichia coli causes cystitis and Clostridium tetani causes tetanus (Anderson 2013). All infection does not lead to disease because of the role of the immune system. The immune system consists of a network of cells, tissues and organs that function together to protect the body against diseases. White blood cells or leucocytes stored in spleen and bone marrow fight aginst antigen entering the body. Phagocytes engulf foreign body, and lymphocytes develop memory after initial infection to give a quick response in case of the second invasion by pathogens. B lymphocytes and T lymphocytes destroy the antigens entering into the body. When antigens are detected, it triggers the B lymphocyte to produce antibodies which bind to specific antibodies. This antibody remains in the immune system and gives a speedy response if the particular antigen is encountered again. That is why a person infected with chickenpox does not get the disease again (Parham 2014). This section will discuss logical sequence of symptoms, cause and treatment of malaria. This disease is transmitted by the bite of Anopheles mosquito. This infected mosquito carries the parasite Plasmodium vivax. When a mosquito bites any person, the parasite enters the bloodstream, travels to the liver and matures. After many days, the mature parasites enter and infect red blood cells. These parasites multiplies in the blood cell and burst out. The symptoms develop after 2-4 weeks of infection (Gazzinelli et al. 2014). Common symptoms include shivering, high fever, vomiting, nausea, headache, muscle pain, etc. The disease is confirmed by physical examination which detects enlargement of spleen or liver. The condition can be avoided by taking anti-malarial drugs and using mosquito repellents to prevent mosquito bites. The medicines for malaria are chloroquine, quinine, etc. which are active against the parasites formed in blood. Treatment also depends on the type of infecting parasit e, the area of infection and accompanying illness of the patient (Breman and OMeara 2015). From the whole study, it can be concluded that the essay gave a detailed explanation of the relationship between microorganism and diseases. It gave the feature of common types of bacteria and explained the role of commensal and pathogens. It highlighted the ways microorganisms are transmitted and their route of entry into human body to cause diseases. It discussed the chain of events that lead to the manifestation of disease symptoms starting from entry pint of the pathogen. It also gave an example of cause and treatment of one infectious disease. Reference Anderson, R.M., 2013.The population dynamics of infectious diseases: theory and applications. Springer. Breman, J.G. and OMeara, W.P., 2015. Intermittent preventive treatment for malaria in infants: moving forward cautiously [editorial].Journal of Infectious Diseases,192, pp.1869-1871. Clements, A.N., 2012.The biology of mosquitoes, Volume 3 Transmission of viruses and interactions with bacteria(Vol. 3). Cabi. Gazzinelli, R.T., Kalantari, P., Fitzgerald, K.A. and Golenbock, D.T., 2014. Innate sensing of malaria parasites.Nature Reviews Immunology,14(11), pp.744-757. Hattaf, K., Yousfi, N. and Tridane, A., 2012. Mathematical analysis of a virus dynamics model with general incidence rate and cure rate.Nonlinear Analysis: Real World Applications,13(4), pp.1866-1872. Kamada, N., Chen, G.Y., Inohara, N. and Nez, G., 2013. Control of pathogens and pathobionts by the gut microbiota.Nature immunology,14(7), pp.685-690. Lwoff, A. ed., 2014.Biochemistry and physiology of Protozoa. Elsevier. Madigan, M.T., Martinko, J.M., Stahl, D.A. and Clark, D.P., 2012. Cell structure and function in Bacteria and Archaea.Brock biology of microorganisms, p.49. Nash, A.A., Dalziel, R.G. and Fitzgerald, J.R., 2015.Mims' pathogenesis of infectious disease. Academic Press. Ostfeld, R.S., 2015. Interactions between mammals and pathogens: an introduction.Journal of Mammalogy,96(1), pp.2-3. Parham, P., 2014.The immune system. Garland Science.

I wanna be yours by John Cooper Clarke Essay Example For Students

I wanna be yours by John Cooper Clarke Essay This poem has no deep meaning but only one of deep desire for some-one. It is quite a childish poem as It uses only very simple words, Is ungrammatical and uses childish rhymes. It also does not use grammatically correct words such as wan. It Is very Informal, Like what someone would say In a serenade to a person. This poem has a very strong central message with very little deep meaning. The central message is desire and about the amount of will people can have to love one ND another. This comes across very strongly because not many people would be willing to become household items for Just anyone, they would have to care for that person very deeply. The tone of this poem could go either way. The poem sounds very happy because it has a very strong rhythmic beat, almost like a song. However if read closely seems very sad because the speaker cares for this person so strongly and their love does not seem to feel the same It Is a poem of true desperation. The feeling In this poem stays the same all the way through because It Is a very repetitive poem. This poem makes you think about how loving someone so much that it hurts. The imagery you get when reading this poem is that it is a man speaking as he talks about doing household chores:- Vacuum cleaner. Which you wouldnt be worth writing about if it was a woman talking because the chores dont affect men. The image conjured in my mind when reading this mean is from the sasss:- electric heater. This would not be applicable now because we have central heating and so would not need an electric heater. I personally visualize women with perfect hair Like In Stafford Wives and men with top hats and golf umbrellas singing In the rain (but not using the umbrellas). There is no punctuation in sight in this poem. All the lines start with lower case letters and there are no full-stops or commas to break up the poem. This means the poem should be read quickly like the speaker is trying to rush his feelings out. It also ivies a informal rule-breaking poem. This is shown through out the poem by the slang and the fact that no developed vocabulary is used. This poem is very rhythmic. It has an easily obtained beat and has a cheerful tone even though some of the poem is depressed. There are also a lot of rhyming words which give a stronger beat and more laid back, light hearted approach. The l wan be yours at the end of every verse Is Like a short summary, almost a chorus. At the end there is a plea of someone trapped in a loveless relationship, a plight yours.

Internship Essay Sample - The Ideal Skills to Use to Land That Dream Job

Internship Essay Sample - The Ideal Skills to Use to Land That Dream JobDo you want to be a part of the workforce in the next five years? Then, the best thing that you can do is to have an internship experience. In fact, if you're not one of those who have had this kind of experience before, then read on to find out some tips and techniques on how to write an internship essay sample.There are many people who would suggest that you start with an essay that you can write according to your appropriate academic background. If you have a degree in business, then you could choose from a range of topics to write about. However, if you don't have a degree in any of these fields, then you will need to prepare a topic that will interest you.Another great way to start is by taking up a subject that you have passion for. Many students love to write about the working experience of their family. If you've been involved in such an experience, you will surely be in a better position to write about t he experience. This is an excellent opportunity to develop your writing skills.You should also consider including some interesting facts about yourself when writing your internship experience. You must include about your job experience in order to highlight your working experiences. If you're going to write about your job experience, you need to be able to describe how your work experience has improved your skills and abilities.The most important point to consider when writing your internship essay sample is the ideas that you have gained from your work. You must mention about the experiences that you've had in your workplace. For example, you might have worked at a particular position for two years. Once you're done with your work, you can add something about what the most amazing experience was about.The other thing that you need to consider when writing your internship essay sample is the subjects that you have studied. It's common to write about the subjects that you have studie d. It will be much easier for you to include it in your essay since you know that you'll get useful information from it. If you know the subjects that you have studied, then there will be no problem in describing the experiences that you've gained from it.Writing your internship essay sample is one of the most important things that you can do if you want to get in touch with the things that you have learned in your previous jobs. If you want to be successful in the workforce, then do this in order to capture the attention of employers.

Manila free essay sample

Figure in state-space where the output is OL(t). 8. Show that the system in the previous Figure in the text yields a fourth-order transfer function if we relate the displacement of either mass to the applied force, and a third-order one if we relate the velocity of either mass to the applied force. 9. Find the state-space representation in phase-variable form for each of the system shown in the Figure. 10. For each system shown in the Figure, write the state equations and the output equation for the phase-variable representation. 11. Represent the following transfer function in state space. Give your answer in vector-matrix form. 12. Find the transfer function G(s)=Y(s)/R(s) for each of the following systems represented in state space. 13. Use MATLAB to find the transfer function, G(s)=Y(s)/R(s), for each of the following systems represented in state space. 14. Repeat problem 13 using MATLAB, the Symbolic Math Toolbox, and Eq. We will write a custom essay sample on Manila or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page (3. 73). 15. Gyros are used on space vehicles, aircraft, and ships for inertial navigation. The gyro shown in the Figure is a rate gyro restrained by springs connected between the inner gimbal and the outer gimbal (frame) as shown. A rotational rate about the z-axis causes the rotating disk to precess about the x-axis. Hence, the input is a rotational rate about the z-axis, and the output is an angular displacement about the x-axis. Since the outer gimbal is secured to the vehicle, the displacement about the x-axis is a measure of the vehicle’s angular rate about the z-axis. The equation of motion is: Jxd2Oxdt2+DxdOxdt+KxOx=JwdOzdt Represent the gyro in state space. 16. A missile in flight as shown in the Figure, is subject to several forces, thrust, lift, drag, and gravity. The missile flies at an angle of attack, a, from its longitudinal axis, creating lift. At the same time, the manipulator must provide sufficient force to perform the task. In order to develop a control system to regulate these forces, the robotic manipulator and the target environment must be modeled. Assuming the model in the Figure, represent in state-space the robotic manipulator and its environment under the following condition. a. the manipulator is not in contact with its target environment. b. the manipulator is in constant contact with its target environment. 22. In the past, Type-1 diabetes patient need to inject themselves with insulin three to four times a day. New delayed-action insulin analogues such as insulin Glargine require a single daily dose. A similar procedure to the one described in Pharmaceutical drugs absorption case study of this chapter is used to find a model in concentration time evolution of plasma for insulin Glargine. For specific patient State space model matrices are given by: Where the state vector is given by a. Find the system’s transfer function. b. Verify the result using MATLAB. 23. A linear, time invariant model of the hypothalamic-pituitary-adrenal axis of the endocrine system with five state variables has been proposed as follows: 4. In this chapter, we described the state-space representation of single input single output systems. In general, systems can have multiple inputs and multiple outputs. An autopilot is to be designed for a submarine in the Figure to maintain a constant depth under severe wave disturbances. We will see that this system has two inputs and two outputs and thus the scaler u becom es a vector, u, and scaler y becomes a vector, y, in the state equations. 25. Experiments to identify precision grip dynamics between the index finger and the thumb have been performed using a ball-drop experiment. A subject holds a device with a small receptacle into which an object is dropped, and the response is measured. Assuming a step input, it has been found that the response of the motor subsystem together with the sensory system is with the form: Convert this transfer function into a state-space representation. 26. State-space representation are, in general, not unique. One system can be represented in several possible ways. For example, consider the following systems: Show that these systems will result in the same transfer function.

Definition and Examples of Deductive Arguments

Definition and Examples of Deductive Arguments Deduction is a method of reasoning from the general to the specific. Also called deductive reasoning and  top-down logic. In a deductive argument, a conclusion follows necessarily from the stated premises. (Contrast with induction.) In logic, a deductive argument is called a syllogism. In rhetoric, the equivalent of the syllogism is the enthymeme.​ Etymology From Latin, leading Examples and Observations The fundamental property of a deductively valid argument is this: If all of its premises are true, then its conclusion must be true also because the claim asserted by its conclusion already has been stated in its premises, although usually only implicitly.Scientific Deduction and Rhetorical DeductionFor Aristotle, scientific deduction differs in kind from its  rhetorical  counterpart. True, both are conducted according to the laws of thought. But rhetorical deduction is  inferior for two reasons: it starts with uncertain premises, and it is enthymematic: it generally relies on audience presuppositions to supply missing premises and conclusions. Because conclusions cannot be more certain than their premises and because any argument is deficient in rigor that relies on audience participation for its completion, rhetorical deductions can yield at best only plausible conclusions. . . .Syllogisms and EnthymemesVery rarely in literary argument do reasoners make use of the complete sy llogism, except to render perfectly apparent the premises from which the conclusion is deduced, or to show some fault in reasoning. Deductive arguments take various forms. One premise, or even the conclusion, may not be expressed if obvious enough to be taken for granted; in this case, the syllogism is called an enthymeme. One of the premises may be conditional, which gives the hypothetical syllogism. A syllogistic argument may be involved in a statement with its reasons, or with its inferences, or may be diffused throughout an extended discussion. To argue effectively, with clearness and cogency, the reasoner must have his deductive framework clearly in mind at every point of his discussion, and keep it before the reader or hearer. Pronunciation di-DUK-shun Also Known As Deductive Argument Sources H. Kahane,  Logic and Contemporary Rhetoric, 1998Alan G. Gross,  Starring the Text: The Place of Rhetoric in Science Studies. Southern Illinois University Press, 2006Elias J. MacEwan,  The Essentials of Argumentation. D.C. Heath, 1898

Obesity Essay Example | Topics and Well Written Essays - 250 words

Obesity - Essay Example It has estimated that in the United States of America two third of the population has either increased weight or is suffering from obesity. Furthermore, it has been classified that one third of the population belonging to the age group of above twenty years is suffering from obesity (Weight Control Information Network 2010). There are many underlying factors that have been leading to this problem. Increased consumption of fats and reduced burning of calories through exercise has resulted in obesity. Reduction in physical activities by children leads to increase in obesity amongst the young generation. The advancement of technology has made the person more reliable on machines for all their works and has resulted in reduction of physical activities. Video games and other forms of entertainment has made people more restricted to indoors and has led to decrease in outdoor activities and games and hence resulted in aggravating the problem of obesity (Biddle et al 2009). The epidemic of o besity needs to be tacked with different measures. Physical activity needs to be promoted and awareness should be created amongst the people regarding the problems that may result due to this condition. Children should be trained in schools and sports activities should be encouraged amongst them. The media should also play a role by promotion of activities and measures that can reduce this issue (Boyse 2008, Biddle et al 2009).

Early Childhood Education- The High Scope Curriculum Research Paper - 2

Early Childhood Education- The High Scope Curriculum - Research Paper Example Of the entire curriculums one of the most effective and efficient process is that using the High Scope Curriculum (HighScope, 2009). This report will deal with analyzing the benefits and drawbacks of the High Scope Curriculum and based on the discussion the effectiveness of the approach will be analyzed. The High Scope Curriculum approach has been developed and refined over the last forty years and this method provides numerous strategies and techniques that can be utilized to assist children at the early stages to become problem solvers and independent thinkers (YMCA, 2009). The approach was originally developed and introduced to assist and serve the children ‘at risk’ in the Michigan area (YMCA, 2009). A research had been conducted by David Weikart, the Director of Special Services to assess the reasons for the number of children failing in school. The research brought out results that highlighted the need for early intervention and using the theories of Jean Piaget, he discovered the need for early introduction of ‘Active learning’ (YMCA, 2009). The High Scope Curriculum involves a high degree of active learning throughout the program. The curriculum includes a few early age indicators like the need and initiative of the children to learn new things by asking questions and looking for answers and also trying to solve problems. These steps form the key development indicators for the growth and development of the children and help the educators to develop and design better active learning programs for the children (High/Scope Educational Research Foundation, 2009). The High Scope Curriculum also takes into account the knowledge and the strengths of the children by exposing them to a wide range of learning experiences and also providing them with opportunities to learn things that interest them and learn based on experience. Also the High Scope educators allow the