The pathogen tries to infect the body. The defense mechanism of the body resists the entry of the pathogen. If pathogen succeeds the infection is established and the body becomes sick.
Once the body activated, killer T cells it recognize pathogen and destroy them. In response that will create memory B cells and T cells specific to a certain pathogen, so if it ever came back it will be killed immediately.
This type of reponse is the adaptive response which develops over the life span and "learns" and "remembers". This makes antibodies in response to antigens.
A fever happens in order to weaken the pathogens inside the body. Once they are weakened, it is hard for them to reproduce and it is easier for the body to dispose of the pathogens. But if a fever gets too high, it breaks down protiens and can lead to permanent brain damage and damage to other parts of the body.
With SOME diseases (not all of them) once you are exposed to the disease your body develops an immunity to that disease.
Depends on factors such as temperature but normally it happens very fast
When ice is exposed to warm air, the ice will begin to melt and become a liquid once more
A very broad answer to a very broad question... A "pathogen" as defined by a dictionary would be, "any disease-producing agent, esp. a virus, bacterium, or other microorganism." First- a "pathogen" in drinking water will cause nothing unless someone or something drinks the water or if the "pathogen" enters the body/host by some other means... Second- even once the "pathogen" enters the body it may still cause nothing, as the quantity of the "pathogen" must be sufficient to cause the would be disease... Third- because a "pathogen" could be any one of millions of things, what disease would be caused by your hypothetical "pathogen in the drinking water" would depend entirely on what it is... You should seriously consider being more specific about your question. If you are interested in a specific pathogen and the associated disease, please try again.
by catching it and getting over it will sometimes makey you immune but there is really no way to become 'immune' to a diseaseThe immune system has the capacity to adapt to new diseases and generate pathogen-specific immunity.
Memory B cells act like an internal vaccine because once it fights the pathogen off it will recognize it. This is how they make vaccines because they inject you with a small amount of the pathogen not enough to harm you so your memory B cells recognize it.
True Pathogen- are capable of causing disease in healthy persons with normal immune defenses ex. influenza virus, plague bacillus, and ect Opportunistic pathogen- cause disease when the host's defenses are compromised or when they grow in part of the body that is not natural to them
Microorganisms are living things that are so small that they can not be seen by the naked eye. When a microorganism causes a disease it is then called a pathogen. A host is a scientific term used to refer to whatever the pathogen is living in. So a host could be an animal, such as a human, or even a plant. An infection occurs once a pathogen enters a host. Disease occurs after infection once the pathogen disrupts homeostasis, or "the balance", in the host's normal functions. The study of this process is known as pathology, and the process of a disease being caused by a pathogen in a host is called pathogenesis.
The TB pathogen enters the body through inhalation of airborne droplets containing the bacteria. These droplets are released when an infected person coughs, sneezes, or speaks. Once inhaled, the bacteria can travel into the lungs and cause infection.