What do pathogenic bacteria consist of?

Question

What do pathogenic bacteria consist of?

I need to know what makes a bacteria e.g. does it have a cell wall etc.

Answer 1

That's a pretty open question, so I'm giving a pretty broad answer. A pathogenic bacteria is any bacteria that causes disease in its host.

Obviously this is very dependent on a lot of factors. For example, E. coli is usually benign and exists happily in your digestive system without bothering anyone, but when a specific phage comes along the same E. coli turns into a flesh eating pathogen. A pathogen on one hosts can be completely harmless in another host. The definition is specific to bacterial species and host.

Answer 2

pathogenic bacteria are those that cause disease in an otherwise healthy person/animal or plant. All bacteria are unicellular and have a plasma membrane and a cell wall that contains a substance known as peptidoglycan which is analagous to the cellulose wall in plants. Bacteria can be characterised by a staining method into Gram negative (plasma membrane/thin peptidoglycan/outer membrane) which are particularly pathogenic as the bodies defences find it difficult to overcome such armour; or Gram positive (plasma membrane surrounding thick peptidoglycan layer).

Pathogens are able to resist the immune system's cells and chemicals and are able to cause disease with quite small numbers and are easily transmitted - usually through contaminated food, water etc. They either damage our cells directly or they release toxins which can kill even though the cells themselves are relatively harmless. For example botulism is caused by a toxin released by the microbe.
Tuberculosis symptoms are caused by our immune systems inflammatory response to a resistant bug. There are many different ways for these microbes to harm and kill but good hygiene and sanitory conditions is usually enough to minimise the chances of infection in this country as we are vaccinated against many of them.

Answer 3

Parasitic Bacteria

Parasitic bacteria are those which normally live off of another living organism, known as the host, since they require a food supply already prepared for their consumption, and generally do not develop outside the body of the host. The parasitic bacteria are of importance in sewage. They originate in the intestinal tract of human beings and animals and reach the sewage by means of body discharges. Included among the parasitic bacteria are certain specific types which, during their growth within the body of the host, produce toxic or poisonous compounds that cause disease in the host. These bacteria are called pathogenic bacteria. They may be present in sewage receiving the body discharges of persons ill with such diseases as typhoid fever, dysentery, cholera, or other intestinal infections.

Answer 4

Pathogenic bacteria have certainly a cell wall, as other bacteria have. However, certain species are more virulent as they possess an extra coat of slimy substance(polysaccharide) over their cell wall.....called as mucilage or capsule layer.
Further, pathogenic bacteria secrete toxins which destroy or disturb host tissue, thereby causing disease or disorder to the host.

Answer 5

Viruses are tiny geometric structures that can only reproduce inside a living cell. They range in size from 20 to 250 nanometers (one nanometer is one billionth of a meter). Outside of a living cell, a virus is dormant, but once inside, it takes over the resources of the host cell and begins the production of more virus particles. Viruses are more similar to mechanized bits of information, or robots, than to animal life. Whereas,Bacteria are one-celled living organisms. The average bacterium is 1,000 nanometers long. (If a bacterium were my size, a typical virus particle would look like a tiny mouse-robot. If an average virus were my size, a bacterium would be the size of a dinosaur over ten stories tall. Bacteria and viruses are not peers!) All bacteria are surrounded by a cell wall. They can reproduce independently, and inhabit virtually every environment on earth, including soil, water, hot springs, ice packs, and the bodies of plants and animals. Most bacteria are harmless to humans. In fact, many are quite beneficial. The bacteria in the environment are essential for the breakdown of organic waste and the recycling of elements in the biosphere. Bacteria that normally live in humans can prevent infections and produce substances we need, such as vitamin K. Bacteria in the stomachs of cows and sheep are what enable them to digest grass. Bacteria are also essential to the production of yogurt, cheese, and pickles. Some bacteria cause infections in humans. In fact, they are a devastating cause of human disease.

Answer 6

pathogenic bacteria are bacteria that invades the host cells and causes diseases ...

Answer 7

Bacteria consist of Cell wall, inside there is dna.
Usualy one supstance from vall couse immunology response whitch is manifestet with disease.

Answer 8

http://www.bacteriamuseum.org/niches/pbacteria/pathogens.shtml