what do you mean by bacteria? Discuss some beneficial bacteria and also write some harmful effects of bacteria
Answers
Bacteria, also called germs, are microscopic organisms not visible with the naked eye. Bacteria are everywhere, both inside and outside of your body. Bacteria can live in a variety of environments, from hot water to ice. Some bacteria are good for you, while others can make you sick.
Bacteria, also called germs, are microscopic organisms not visible with the naked eye. Bacteria are everywhere, both inside and outside of your body. Bacteria can live in a variety of environments, from hot water to ice. Some bacteria are good for you, while others can make you sick.Bacteria are single-celled, or simple, organisms. Though small, bacteria are powerful and complex, and they can survive in extreme conditions. Bacteria have a tough protective coating that boosts their resistance to white blood cells in the body.
Bacteria, also called germs, are microscopic organisms not visible with the naked eye. Bacteria are everywhere, both inside and outside of your body. Bacteria can live in a variety of environments, from hot water to ice. Some bacteria are good for you, while others can make you sick.Bacteria are single-celled, or simple, organisms. Though small, bacteria are powerful and complex, and they can survive in extreme conditions. Bacteria have a tough protective coating that boosts their resistance to white blood cells in the body.Some bacteria have a tail, called a flagellum. The flagellum helps a bacterium to move around. Other bacteria have sticky hair-like appendages that help bacteria them stick to one other, hard surfaces, and human body cells.
Bacteria, also called germs, are microscopic organisms not visible with the naked eye. Bacteria are everywhere, both inside and outside of your body. Bacteria can live in a variety of environments, from hot water to ice. Some bacteria are good for you, while others can make you sick.Bacteria are single-celled, or simple, organisms. Though small, bacteria are powerful and complex, and they can survive in extreme conditions. Bacteria have a tough protective coating that boosts their resistance to white blood cells in the body.Some bacteria have a tail, called a flagellum. The flagellum helps a bacterium to move around. Other bacteria have sticky hair-like appendages that help bacteria them stick to one other, hard surfaces, and human body cells.There are many bacteria in the human body, especially in the stomach and mouth. Bacteria are found on surfaces and in substances such as water, soil, and food.
Bacteria can be aerobic, anaerobic, or facultative anaerobes. These terms describe how they respond to oxygen. Aerobic bacteria need oxygen to live. Anaerobic bacteria will die around oxygen. Facultative anaerobes function best with oxygen but do not need it.
Some bacteria are good for you, including the bacteria in your digestive system, or gut. These bacteria help to break down food and keep you healthy. Other good bacteria can produce oxygen are used to create antibiotics. Bacteria are used in food production to make yogurt and fermented foods.
Some bacteria are good for you, including the bacteria in your digestive system, or gut. These bacteria help to break down food and keep you healthy. Other good bacteria can produce oxygen are used to create antibiotics. Bacteria are used in food production to make yogurt and fermented foods.The ecosystem relies on bacteria to function properly. For example, bacteria break down dead matter in the environment, like dead leaves, releasing carbon dioxide and nutrients in the process. Without the release of carbon dioxide, plants are unable to grow.
Though there are many more good bacteria than bad, some bacteria are harmful. If you consume or come in contact with harmful bacteria, they may reproduce in your body and release toxins that can damage your body’s tissues and make you feel ill. Harmful bacteria are called pathogenic bacteria because they cause disease and illnesses like strep throat, staph infections, cholera, tuberculosis, and food poisoning.
Answer:
What is Bacteria?
A bacterium is a single-celled (unicellular) microorganism that does not have a nucleus or any other membrane-bound organelles. Bacteria are sometimes called 'prokaryotes.' In Greek, 'prokaryote' literally means 'before the nut' (where 'the nut' is the nucleus.)
Bacteria adapt to become well-suited to their environments, and therefore come in many shapes and forms. However, they all have a few parts in common.
1. Capsule: A protective, often slimy, coating, often of sugars, that helps to protect the bacterium. It also makes bacteria virulent. This means the bacteria is more likely to cause disease, since it aids the cell in survival against attack. For example, the bacteria may survive an attack from the human body's immune system.
2. Cell wall: In bacteria, the cell wall is usually made of peptidoglycan, a protein and sugar compound. This structure gives the cell some rigidity and protection.
3. Cell membrane: As in most cells, the bacterium's plasma membrane acts by coordinating the passage of molecules into and out of the cell.
4. Cytoplasm: Again, as in many cells, the cytoplasm serves as a medium through which molecules are transported, as well as a system to maintain conditions (like temperature and pH) that are best for the cell.
5. Ribosomes: The main site for the bacterium's protein synthesis.
6. Nucleosome: A basic unit of chromatin, which won't be covered in this lesson.
7. Nucleoid: This is the region where the bacterium's DNA is located. Again, it's not the same as a nucleus because it's not surrounded by a membrane.
What is Bacteria?
A bacterium is a single-celled (unicellular) microorganism that does not have a nucleus or any other membrane-bound organelles. Bacteria are sometimes called 'prokaryotes.' In Greek, 'prokaryote' literally means 'before the nut' (where 'the nut' is the nucleus.)
Bacteria adapt to become well-suited to their environments, and therefore come in many shapes and forms. However, they all have a few parts in common.
Anatomy of a typical bacterium.
1. Capsule: A protective, often slimy, coating, often of sugars, that helps to protect the bacterium. It also makes bacteria virulent. This means the bacteria is more likely to cause disease, since it aids the cell in survival against attack. For example, the bacteria may survive an attack from the human body's immune system.
2. Cell wall: In bacteria, the cell wall is usually made of peptidoglycan, a protein and sugar compound. This structure gives the cell some rigidity and protection.
3. Cell membrane: As in most cells, the bacterium's plasma membrane acts by coordinating the passage of molecules into and out of the cell.
4. Cytoplasm: Again, as in many cells, the cytoplasm serves as a medium through which molecules are transported, as well as a system to maintain conditions (like temperature and pH) that are best for the cell.
5. Ribosomes: The main site for the bacterium's protein synthesis.
6. Nucleosome: A basic unit of chromatin, which won't be covered in this lesson.
7. Nucleoid: This is the region where the bacterium's DNA is located. Again, it's not the same as a nucleus because it's not surrounded by a membrane.
8. Flagellum: In many bacteria, a flagellum is present, and is the means by which the cell moves around.
beneficial bacteria
Good” bacteria, also known as beneficial bacteria, are defined as any bacteria that are beneficial to the body and enhance health. One of the most well known types of good bacteria are probiotics. Actually, most bacteria are “good.” Comparatively speaking, there are only a handful of “bad” bacteria out there.
5 harmful effects of bacteria in humans
Bacteria is present everywhere, including our entire body. Bacteria can be harmful, but some species of bacteria are needed to keep us healthy. The bacteria on the skin, in our airways, and in the digestive system are the first line of defence against pathogens that can cause infection and other problems. Each person has a personalized collection of bacteria, called the microbiome.
Some species of bacteria in the body can result in diseases, such as cancer, diabetes, cardiovascular disease, and obesity.
Staphylococcus aureus can cause something as simple as a pimple or as serious as pneumonia.
P. gingivalis can cause gum disease or pancreatic cancer as found in recent studies.
Klebsiella pneumonia can cause colitis, and subsequently, lead to colorectal cancer.
It can also cause simple allergies and chronic inflammation.