There are many diseases that fit into each of the four categories, if not one category, maybe two or more.
• The infectious category refers to an infectious disease that is caused by a biological agent such as a virus, bacterium or parasite. Infectious diseases are the invasion of a host organism by a foreign replicator, generally microorganisms, often called microbes. Microbes that cause illness are also known as pathogens. The most common pathogens are various bacteria and viruses. An infectious disease is termed contagious if it is easily transmitted from one person to another. An organism that a microbe infects is known as the host for that microbe. In the human host, a microorganism causes disease by either disrupting a vital body process or stimulating the immune system to mount a defensive reaction.
• An inherited disease is very different from an infectious disease, as inherited diseases are likely to pass onto descendants. Each cell in the body contains 23 pairs of chromosomes. One chromosome from each pair is inherited from your mother and one is inherited from your father. The chromosomes contain the genes you inherit from your parents. There may be different forms of the same gene. There may be a faulty version of a gene that results in a medical condition, and a normal version that may not cause health problems. Depending on which gene is the dominant gene, relies on whether a disease is inherited or not.
• Physical diseases usually involve the ‘physical’ appearance of a person, this could be permanent or temporary fixture. Physical diseases are diseases of the body, not the mind. Many things including bacteria, virus, and genes can cause physical diseases. Physical diseases can be divided into acute and chronic. E....
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... occur because of exposure to a fungus when there is a weakness in the body. This weakness can result from a compromised immune system or in an individual who provides a warm, moist environment in which the fungi can grow. Fungi usually reproduce either sexually or asexually, but asexual reproduction is the most common type of reproduction in most fungi. In sexual reproduction the male and female cells fuse, to produce spores inside a fruiting body. In asexual reproduction they reproduce by simply making little copies of themselves.
Protists are single celled eukaryotic organisms that are able to reproduce asexually and sexually. During sexual reproduction, two protists join and exchange genetic material in the nucleus. Prostist make people ill when they become human parasites they infect via puncture wounds and through consumption of contaminated food or water.
“There is no real definition for disease. ” This is a claim that Melody Petersen makes in her book. Most would define disease as an abnormality in regards to health. This seems logical, but it leads to the following question : what is “normal” ? What is the definition of “healthy” ? Asking major pharmaceutical companies these questions will most likely lead to the following conclusion: disease is malleable. In other words, it is open to a certain level of interpretation. According to Petersen, giant drug manufacturers consider disease to be a business. Thus, they create a market out of people’s physical or emotional shortcomings. In 1998, Pharmacia, a large American manufacturer of prescription drugs,
11.2) Asexual reproduction involves a single individual / parent who pass duplicates of all its genes to its offspring without the fusion of gametes. Sexual reproduction involves two parents who give rise to offspring that have unique combination of genes inherited from the two parents.
· genetics: occasionally the disease has a tendency to run in certain families (inherited or genetic predisposition), but this is not common.
Eukaryotic microorganisms can be defined as organisms whose cells contain a nucleus and other organelles enclosed in membranes. It is said that all multicellular organisms are eukaryotes which mostly comprises of animals, plants, and fungi. They are known to be much larger than prokaryotes which contain no nucleus because they are multinucleated organisms. Eukaryotes were said to have developed about 1.6 – 2.1 billion years ago. But that is only an approximation. We would not be here if eukaryotic microorganisms did not exist. These organisms tend to share a common origin and could be treated as a super kingdom, empire, or domain. Lastly, many unicellular organisms are also eukaryotes e.g protozoa. The types of eukaryotes are algae, yeast, fungi and protozoan.
A genetic disease is a mutation caused by the absence of a gene or by products of a defective gene. ("Genetic Disease") ("What Are Genetic Disorders?")
It is important to note that genes themselves do not cause disease genetic disorders are caused by mutations that make a gene function improperly. For example, when people say that someone has the cystic fibrosis gene, they are usually referring to a mutated version of the Cystic Fibrosis Transmembrane Conductance Regulator gene, which causes the disease. All people, including those without cystic fibrosis, have a version of the Cystic Fibrosis Transmembrane Conductance Regulator gene.
Smallpox is a disease from the variola virus. Smallpox has caused an estimated number of 300 million deaths in the 1900s alone. Smallpox is said to have been around since the ancient Egyptian times. The disease was eradicated in the late 20th century and two samples are still kept, one in U.S.A and one in Russia. Smallpox creates bumps and blisters all over the body and has been one of the most fatal epidemics the world has seen.
Disease. It is not everyday that a person hears that eye opening word. When anyone says the word disease, one’s mind goes to bad places. When a person begins to suspect that something is wrong with their body, they immediately seek a physician's help. Symptom after symptom a person becomes worried and afraid of that “what if feeling” that the one word leaves on someone. Diseases do not come very often but when they come, they come fast with lasting effects on one’s body. Sometimes, an individual diagnosed has to take a medicine or even multiple medicines that may not even help with the negative effects like pain. After running multiple tests, doctors begin to discuss possible treatments with the patient, while they are still in fear
Jack, Emily (2008). Diseases: A brief guide to causes, symptoms, history, and treatment. Retrieved from http://www.learnnc.org/lp/pages/4067
Dictyostelium discoideum is an amoeba in the class Dictyostelia which is a group of cellular slime molds, also known as social amoebae. Their life cycle begins when they hatch from spores into myxamoebae. In this stage they are unicellular amoebae that reproduce by mitosis. Mainly found in soil these amoebae have a very short life cycle, only 24 hours long. Dictyostelium discoideum have 3 methods of reproduction; mitosis, sexual reproduction, and asexual reproduction. The first method is carried out while the cell is in its unicellular form. The second mode occurs when cells of opposite mating types fuse together creating a macrocyst that forms a zygote that engulfs surrounding bacteria and as it germinates, haploid myxamoebae are released.
In this essay I am going to investigate whether health is easily defined as the absence of disease or physical injury. According to Health psychology (2009) ‘World Health Organisation defined health as a complete state of physical, mental and social well-being and not merely the absence of disease or infirmity’. In order to achieve good physical a nutrition diet is needed, healthy BMI, rest and adequate physical exercise is needed.
not related to lifestyle may be due to medical causes. Finally the forth type is a chronic
They are often spread through interactions between infected individuals and ones who are not. Often, day to day encounters among people initiate the spread of sickness without even being aware of their doings. Aside from people spreading sickness among each other, another method would be through contamination. Often food, water, or medical supplies that are not properly cleaned could increase the risk of contamination to uninfected individuals (Infectious Diseases). Overseas, issues developed causing an increase in spreading. When individuals travel overseas they are subject to a higher risk infection due to lack of sanitation in foreign countries. If infected, upon return home diseases could be spread in such a manner. Travelers and military personnel who may be vaccinated are still at risk of obtaining an illness. Individuals from foreign countries that find themselves in the United States also have the ability to spread illnesses if they are carrying an active virus (The Global Infectious Disease). Certain infections could eventually result in contact with an infectious disease physician. Those individuals who practice within such a specialty are educated in identifying and treating infectious diseases. Their route of treatment is conducted around each patient specifically to ensure the best care possible. It is often that post-care of a certain illness
Most of them are multicellular organism, with the exception of a few that are single cells called yeasts. In the beginnings of the studies of the living organisms the fungi was related in a closer way with the plants, because of similarities in lifestyle. But with the development of the Mycology, which is the branch that study the fungi, it was found that the fungi, even thought have similar characteristics with the animals and plants, it constituted a unique kingdom itself. One of the most general misunderstanding related with the fungi, is that it’s common to think that, as plant, they use the process of photosynthesis to elaborate their food, but they don’t. Instead, they used a method more similar to the animal digestive process, by using enzymes that break down nutrients into smaller pieces that they can then absorb. Fungi can cause a number of plant and animal diseases: in humans, ringworm, athlete 's foot, and several more serious diseases are caused by fungi. Because fungi are more chemically and genetically similar to animals than other organisms, this makes fungal diseases very difficult to treat. Many studies and researches are destined to investigate how to prevent and control the impact of Fungi in human society. Fungi are tremendously important to the planet we live on. They provide fundamental products including foods, medicines, and enzymes important to