Do bacteria have brains?
No ,bacteria is sigle celled organism ,it doesnot contain brain or other organs .its just a single cell
How does gut bacteria influence the brain?
How does gut bacteria influence the brain?Bacteria in the human body outnumber our own cells 10:1. Most of those bacteria reside in the gut. Research shows that when the balance between healthy bacteria and disease-causing bacteria is changed (in the gut of rodents), they became more bold or more anxious.In a 2011 study of the "microbiome-gut-brain axis," published in Gastroenterology mice that are breed to be timid, were given an antibiotic. They became bold and adventurous and reverted back to their previous timid selves once the antibiotic was stopped.Mice that were raised in sterile environments (no bacteria), had more stress hormones. When fecal samples from healthy mice were implanted, they became normal in their stress response, but only if the implant took place prior to being weaned. Also in another study, mice that were fed probiotics were more resilient to getting depression.Further gut bacteria research on rodents shows that the gut bacteria influence neural development, brain chemistry and many other behavioral phenomena, including emotional behavior, pain perception and the stress system response.The human gut, is often referred to as the "second brain,", and it is the only organ to have its own independent nervous system embedded in the gut wall. Although the gut bacteria affect our brain (via the immune system and , the brain also affects gut bacteria. Stress alters the bacteria balance and can leave the host open to infections, and other problems, and mood disorders such as anxiety and depression. This is due to the vast number of neurochemicals the gut bacteria produce, for example they produce about 90% of our seratonin (a neurotransmitter responsible for making us feel happy. Research on infant monkeys whose mothers got startled by loud noises during pregnancy, had fewer gut bacteria; and students who were in exams had less gut bacteria than they had at the beginning of the school year. It is further believed that the bacteria imbalances are responsible for increasing inflammatory cytokines which affect the body and brain. People who had more inflammatory cytokines were more likely to suffer from anxiety and depression.That gut feeling
Do Germs Have Eyes or a Brain?
germs are living creatures. They can multiply and create havoc. As to 'thinking', they do not have brains like humans. But germs, virus particularly, mutate, just like the swine flu now. How they mutate, is a process occuring at the RNA/DNA level. As to eyes, nose, brains, legs... nope. They do not have that. They may have 'villi', which is similar to 'leg'. Different germs are destructable in different form. Eg, a drop of blood on the table surface, HIV virus is no longer dangerous but hepatitis virus is still there (for up to 2 weeks) even if some one has wipe away the blood (with just plain water).
What is the role of E. coli bacteria in the human intestines?
It is a natural part of the human digestive flora - It produces vitamin K2 - and prevents the establishment of some hostile bacteria in the body. Another good thing about E. Coli is that it is easy to cultivate and culture and study, especially in the genetics programs. According to Wikipedia: http://en.wikipedia.org/wiki/E._coli "Escherichia coli (pronounced /ˌɛʃɪˈrɪkiə ˈkoʊlaɪ/) (E. coli), is a bacterium that is commonly found in the lower intestine of warm-blooded animals. Most E. coli strains are harmless, but some, such as serotype O157:H7, can cause serious food poisoning in humans, and are occasionally responsible for costly product recalls. The harmless strains are part of the normal flora of the gut, and can benefit their hosts by producing vitamin K2, or by preventing the establishment of pathogenic bacteria within the intestine. E. coli are not always confined to the intestine, and their ability to survive for brief periods outside the body makes them an ideal indicator organism to test environmental samples for fecal contamination. The bacteria can also be grown easily and its genetics are comparatively simple and easily-manipulated, making it one of the best-studied prokaryotic model organisms, and an important species in biotechnology. E. coli was discovered by German pediatrician and bacteriologist Theodor Escherich in 1885 and is now classified as part of the Enterobacteriaceae family of gamma-proteobacteria"
What would happen if all the bacteria in your gut died?
Food digestion impaired: Your ability to digest fibre will be affected.Lack of Vitamins: The food that you eat helps in creation of a rich, thriving environment for microorganisms which in turn produce compounds essential for human survival like Vitamins.Increased susceptibility to infections: The beneficial bacteria in the gut prevent infection and colonisation by pathogenic microorganisms. Germ free mice are far more infected by common enteric pathogens than normal mice. The gut flora influences the immune system as well. Absence of a proper microbe niche in gut, leads to improper production of antibodies and cytokines.Thin colonic mucus layer: Presence of bacteria in intestine helps in forming a thick mucus layer lining. The rate of epithelial cell turnover in also increased.Hormone levels varied: The microbes produce hormones and chemicals which affect us both physiologically and psychologically. Gut microbiota have been shown to regulate stress levels in mice.
What happens to gut bacteria after bodies decay?
As another answerer said, gut bacteria are the seeds of decomposition. After death, when the walls of the cells break down and the immune system is no longer fighting the bacteria from eating the internal organs(what causes decomposition in the first place), gut bacteria will begin to eat the organs, eventually breaking down the walls and turning it all into sludge, which is a process called autolysis. Autolysis is the first stage of decomposition, also called the fresh stage, and its what causes the changes in skin coloration and marbling and things like that. It's when you get to the end of the second stage where bodies have the disturbing tendency to burst from the gasses released during autolysis that you have some dispersal of the gut bacteria into the atmosphere, and some where they just keep eating until there's nothing left to eat. After there's nothing left to eat, they just disperse back into the environment of wherever the body decomposed.