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Microbes, also known as microorganisms, are tiny, unicellular organisms that are invisible to the naked eye. While certain microorganisms are helpful in daily life, others are hazardous to our health. Pathogens are the name for dangerous germs. Bacteria, viruses, protozoa, fungi, and a few species of worms are among the microorganisms that cause disease. As soon as they enter the host cell, they interfere with or harm normal cellular functions. Larger-scale diseases are caused by this.
Also read: Microbes in Human Welfare
| Table of Content |
Key Terms: Microbes, Disease, Microorganisms, Treatment, Prevention
What are Microbes?
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Microbes are too small to be seen with the human eye. Pathogens are hazardous microbes that are capable of causing microbial diseases. However, not all bacteria are dangerous and do not result in microbial infections.
Human bacterial disease and other microbial diseases are caused by dangerous germs using a variety of techniques and hazardous habits. Microbes are single-celled organisms that can be found wherever on the planet, even inside our bodies. There are four main categories of microorganisms that typically cause illness. They are viruses, fungi, bacteria, and protozoa. Microorganisms' capacity for pathogenicity makes them effective in infecting their hosts.
The four sites indicated below all allow for the entry of microbes into the body:
- Respiratory system, such as the flu virus that affects the mouth and nose.
- Digestive system (mouth and oral cavity), for instance, Vibrio cholera, which causes cholera.
- Escherichia coli, which causes cystitis, can affect the urinary tract.
- Skin surface breaks, such as those caused by the tetanus-causing Clostridium tetani.
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| Related Concepts | ||
|---|---|---|
| Sewage Treatment | Ganga Action Plan | Leprosy |
| Microbiology | Vitamin B-12 Deficiency | Biogas |
| Biology and Human Welfare | Bio Control Agents | Microbes as Biofertilizers |
What are Diseases?
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There are several diseases brought on by microbes that are spread from various sources. To take the necessary precautions at the appropriate moment, one needs to properly understand them. According to studies, there are more bacteria-related disorders than ever before, so appropriate safety measures must be performed.
Microbes and Diseases
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Microbes and Diseases are explained in detail below:
Virus
Viruses are little, parasitic critters. The diseases spread by viruses are referred to as viral diseases since a virus is a viral organism. They have the ability to spread numerous infectious diseases that have a detrimental impact on one's health. Sometimes these bacteria liberate themselves from the cell, killing the cell. This clearly proves the link between germs and diseases. Some diseases brought on by viruses include the common cold, measles, mumps, smallpox, HIV, HSV, etc.
Adaptable Medical Procedures
In this sense, immunity systems can be employed to combat diseases brought on by microorganisms because they help to remove infections. Antiviral medications are available to treat illnesses including hepatitis C and HIV. There is proof that some viruses, like HSV, can live permanently in a person's body and regenerate. There are historical instances of microbial infection being disregarded by therapies.
Bacteria
The particular bacterium or pathogenic bacteria is to blame for the development of bacterial diseases in humans. Human diseases brought on by bacteria include cholera, diphtheria, and other illnesses that are frequently mentioned or well-known among people.
The human body contains billions of bacteria, many of which are referred to as "good bacteria" because they benefit physical health. However, there are also dangerous bacteria that can spread illness. Even so, they are effective at dispensing chemicals that can easily contribute to physical harm. Numerous hazardous diseases are brought on by bacteria. Bacteria are the cause of cholera, TB, anthrax, etc.
Adaptable Medical Procedures
The list of bacterial illnesses is extensive, and antibiotics are typically used to treat them. Antibiotics have the power to totally eradicate germs by gradually halting their ability to reproduce.
Fungal Infections
There are countless diseases in this world that are brought on by bacteria and their carriers. One group of microorganisms that cause infection and are found everywhere in the environment is fungi. They are essentially yeasts and molds, and they may be found in our bathrooms as well as other wet places like soil and patchy regions. Molds are typically detectable, but occasionally they might be difficult to spot with the naked eye because they are so tiny. Fungi can develop in wet, humid parts of the body and cause illnesses like ringworm and athlete's foot.
Treatment
Similar to the list of bacterial diseases, antifungal medications can treat fungal diseases. The type of fungi that a person has on their body determines the course of treatment. Additionally, antifungal creams are offered on the market.
Protozoa
Parasites and various other ill-causing microbes are protozoa. These are little, single-celled creatures that feed on hosts and obtain their nourishment from them. Malaria, cholera, sleeping sickness, dengue, and amoebic dysentery are some of the most prevalent ailments that can be contracted from these bacteria.
Treatment
Antiparasitic medications can treat a variety of protozoal disorders. The disease brought on by these parasite germs can be treated with a number of medications that are sold at chemist stores. Similar to bacteria and fungi, the type of protozoa ruling a person's body determines how they should be treated.
Microbes and Diseases
Prevention
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Preventive measures that one can adhere to in order to eradicate the disease-causing bacteria.
- Upholding hygienic standards: It's crucial to wash your hands frequently, especially before eating, cooking, or touching your mouth or eyes. The majority of microorganism-based diseases have developed as a result of improper practices.
- Never share personal belongings: Nobody should have access to a person's private belongings. The list includes particular objects like toothbrushes, handkerchiefs, and glasses for drinking. Diseases and microbes are related to one another. A minor error in your step might have serious repercussions.
- Obtaining the right vaccines: This idea is really important. You have a good chance of avoiding diseases brought on by bacteria, fungi, viruses, and protozoa if you receive the right vaccinations. Hepatitis B, cough, and other illnesses are constrained by this strategy.
- Food cleanliness: Uncleanliness is mostly to blame for diseases that are spread by microbes. All types of cleanliness must be kept up during food preparation while being properly sanitized. The spread of bacteria and diseases can be significantly slowed down by maintaining good sanitization and hygienic practices.
Things to Remember
- Microbes are more commonly referred to as microorganisms because they are too small to be seen with the human eye.
- Pathogens are hazardous microbes that are capable of causing microbial diseases.
- Viruses are little, parasitic critters. Some diseases brought on by viruses include the common cold, measles, mumps, smallpox, HIV, HSV, etc.
- Antiparasitic medications can treat a variety of protozoal disorders.
- Fungi can develop in wet, humid parts of the body and cause illnesses like ringworm and athlete's foot.
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Sample Questions
Ques: What kind of microorganisms are in the human body? (2 marks)
Ans: Microbes are microscopic, living things that can be categorized as bacteria, protists, or fungi. They are numerous and perform a variety of essential roles in the human body. However, some microorganisms are also known to be harmful and cause diseases in people.
Ques: What characteristics characterize bacteria as beneficial or bad? (2 marks)
Ans: Finding "good" or healthy bacteria is one of the most frequently questioned questions in this area of biology. Although there is a large list of diseases caused by bacteria, it is also true that without bacteria, there would have been no plants on earth since there would have been no soil.
These are referred to as "good bacteria" or "healthy bacteria" since they assist in adjusting all the necessary conditions for food digestion. They are crucial for destroying the organic substances required for energy consumption. These beneficial microorganisms contribute to the body's efficient operation. On the other side, harmful health problems are brought on by pathogenic germs.
Ques: Do algae a fungus or bacteria? (3 marks)
Ans: In general, algae are photosynthesis-based organisms. These are typically referred to as plants. They are occasionally referred to as protozoa. They are typically classified as organisms like plants, fungi, bacteria, and others that are not thought of as animals.
They cannot be classified as either plants or animals. Some are unicellular, while others are single-celled. It's fascinating to note that despite algae's resemblance to moss, they cause significant harm to even plants. Thus, the presence of algae in ponds or rivers indicates a dirty environment and an unbalanced ecology.
Ques: How do bacteria impact life? (2 marks)
Ans: For instance, each human body contains 10 bacteria for every human cell, and these microbes support immune system development, aid in digestion, make vitamin K, and detoxify toxic substances. Of course, bacteria are necessary for the production of many of the items we eat, like bread, cheese, and wine.
Ques: Write a short note on pathogens. (3 marks)
Ans: An organism that causes or has the potential to cause disease is typically referred to as a pathogen. A pathogen is a bacterium that can harm a host, according to our definition.
This definition prompts the question of what it is about the microorganism that makes it capable of causing disease or damage, which leads us to an ongoing discussion that dates back to the establishment of the germ theory of disease in the late 19th century. Many of the primary pathogenic microbes were encapsulated or toxigenic bacteria in the early days of the germ theory era, which argued that there were fundamental differences between pathogenic and non-pathogenic germs.
Ques: What part does the diversity of microbes play in human health? (2 marks)
Ans: Exposure to a wide range of microbes improves our bodies' capacity to create an effective defensive response to illnesses. The production of "memory cells," which preserve a record of all the infections our bodies come into touch with, is another function of our immune system.
Ques: What kinds of microorganisms are dangerous, for instance? (2 marks)
Ans: There are numerous kinds of dangerous bacteria that can spread through a number of various media. Escherichia coli (E. Coli), Pseudomonas aeruginosa, and Streptococcus Pyogenes are a few of the most dangerous bacteria known to man.
Ques: What part do bacteria play in preventing chemical-induced environmental deterioration? (3 marks)
Ans: Biopesticides and bio-fertilizers, which are both microbes, are utilized as pesticides and fertilizers to lessen environmental deterioration. As bio-fertilizers, bacteria such as AZ spirillum, Azotobacter, Rhizobium, and others improve soil nutrients by fixing atmospheric nitrogen in the soil.
They inhibit the growth of insect pests as bio-pesticides (Bacillus thuringiensis). Trichoderma, a kind of fungus, is an efficient biocontrol agent for a variety of plant infections. Baculoviruses belonging to the nucleopolyhedro virus genus are employed as biological controls for species-specific, narrow-spectrum insecticidal treatments.
Ques: Explain the "hygiene hypothesis" theory. (1 mark)
Ans: According to the "hygiene hypothesis," in order for our immune systems to grow properly, they must be exposed to specific bacteria when we are still children.
Ques: Identify the bacteria that is a clot-busting agent. Mention the action it takes place. (2 marks)
Ans: Microbe The clot-busting enzyme streptokinase is produced by streptococcus. It has a fibrinolytic effect that dissolves blood clots that form in the blood arteries of myocardial infarction patients, preventing heart attacks in those people that could otherwise happen due to clot blockage.
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