0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How are they different between active immunity and passive immunity different?
Passive immunity involves the bodies defenses which do not change for different types of microbes. This would be like Natural Killer B cells which attack a wide variety of microbes. Active immunity involves your body becoming acclimated toward a bacteria or virus, such that future contact will spur on a triggered response. An example of this would be the production of antibodies.
Which of the two types of immunity requires white blood cells?
The Passive and Active Immunity's, why? Because they are immunity's that your body produces in response to a specific pathogen that has infected or is infecting your body.
Immunity uses helper cells and killer cells to identify and destroy abnormal cells?
Cellular immunity uses helper cells and killer cells to identify and destroy abnormal cells.
What cells types are specifically responsible for cell mediated immunity?
The b cells are specifically responsible for cell mediated immunity.
What is the role of memory cells in providing acquired immunity?
The idea of immunisation is that you expose the immune system to the pathogen, ennabling it to recognise the pathogen and produce mature memory Helper T cells. This means that upon its second exposure the immune system is activated faster and more efficiently, allowing the immune system to kill off the pathogen quicker. In some cases antibodies are produced that can neutralise toxins, preventing their damaging effects. If memory T cells were not produced then the immune system would have to re-learn how to fight a pathogen every time.
An example of artificial passive immunity?
Passive means that lymphocytes are not used means that plasma cells and memory cells or t cells both are not activated by antigen therefore no mitosis occurs!! ONE EXAMPLE: Injecting foreign antibodies into our body
What role do memory cells play in immunity?
no
How do you acquire passive immunity?
You can get passive immunity through a placenta when you are a fetus in your mothers womb or you can be injected with antibodies that have most likely been forced to grow due to somebody putting a disease in an animal such as a rabbit. Unfortunately passive immunity does not last very long because the antibodies are detached from their white blood cells which keeps them a live and also stores the antibodies in their memory so you can not become immune forever via passive immunity as it is only passive e.g. short lived/quick
Why is passive immunity of much shorter time or duration than active immunity?
With active immunity, the body has cells that produce antibodies to antigens composed of amino acids. The antigen could be a protein itself, or on a virus or bacteria. Once the body has a cell that can produce antibodies to this antigen, it differentiates into memory cells and plasma cells, which are the factories that produce the antibodies. With passive immunity, just the antibodies are given, such as an injection. Mothers also confer passive immunity to their children through breast milk. IgA (one of the 5 antibody classes) is secreted. This is temporary as it will bind the antigen, but will not induce production of their own protective antibodies.
How are they different between active immunity and passive immunity different?
Passive immunity involves the bodies defenses which do not change for different types of microbes. This would be like Natural Killer B cells which attack a wide variety of microbes. Active immunity involves your body becoming acclimated toward a bacteria or virus, such that future contact will spur on a triggered response. An example of this would be the production of antibodies.
Passive immunity does not last as long as active immunity?
Active Immunity is subdivided into two.First, the Natural Active Immunity which last a lifetime because our memory T-cells recognized the pathogen in our first exposure thus it was able to make anti-bodies againts it.Second,the Artificial Active Immunity which is commonly introduced to us by meas of vaccine.Examples of these are BCG,DPT,Hepatitis Vaccine,Tetanus Toxoid and OPV,these vaccine may contain LAM(Live Attenuated Microorganism) or dead microorganism that are being introduced to our body artificially that leads to activation of memory T-cells to also form anti-bodies, on the other hand it does not protect us for a lifetime.Serum Levels must be obtained and a booster shot is suggested in Hepatitis Vaccine after four years from the last dose recieved.
Compare passive immunity to active immunity?
Active Immunity - Vaccines are used for health purposes to expose our bodies to a particular antigen. These antigens are usually killed or severely weakened to decrease their potency. After destroying these pathogens, the body stores some T cells as memory cells, due to the fact they code for a particular antigen and can be when needed. This memory in T cells can be a means of artificially acquiring immunity while a genuine attack by a pathogen is a naturally acquired type of immunity. Passive Immunity - This is where immunity to particular antigens as a result of genetic traits passed on from parents rendering the offspring immune to a particular pathogenic threat.
Adaptive immunity is produced by which cell?
There are many cells involved in adaptive immunity and requires them to work together for a fully functional adaptive response. These cells include: CD4 (Th1 & Th2) T cells, B cells (plasma and memory), professional antigen presenting (APC) cells that include: dendritic cell, B cells and macrophages.
What immunity results when millions of memory b cells remain in the body?
Memory b cells provide long term immunity for a specific disease or antigen. As an example a vaccination for hepatitis A provides memory b cells that will attack the disease when it is present and remove it.
Which of the two types of immunity requires white blood cells?
The Passive and Active Immunity's, why? Because they are immunity's that your body produces in response to a specific pathogen that has infected or is infecting your body.
Antibodies are produced by what cells?
Antibodies are produced by B lymphocytes as the third line of defense to provide humoral immunity.
Why does passive immunity usually not last for long?
When you have immunity, your body has antibodies against a foreign organisms (i.e. bacteria and virus) . Usually this is achieved by exposure to these organisms. That is: 1. you get an infection (or vaccination with inactive parts of a bacteria or virus), 2.your body defeats the invader, 3. some of the cells in your body "remember" which antibodies they produced , 4. next time you are exposed to the same foreign organism, these cells quickly produce antibodies so you won´t get ill (i.e. you are immune) When you have passive immunity, it usually is due to a vaccination with antibodies. Your body hasn´t produced the antibodies on its own. So once the antibodies become too old and inactive, you are not immune any longer, and when you encounter the foreign organism again, it will be like a novel infection, because it has no memory cells, which can respond quickly.
