The correct answer is antigens and epitope.
An antigen is a substance which triggers an immune response in an organism. This can be either a foreign substance, such as a pathogen, or a specific part of the host organism (in this case this is an autoimmune response). The presence of an antigen activates a specific part of the immune system, called antibody. Each antigen has a specific antibody, which is tailored by the immune system accordingly. More specifically, the antibody has a specific structure, called paratope, which is complementary and binds like a key to a specific structure of the antigen, called epitope.
Soccer, out of them all it’s soccer
Strangler figs are plants that attach themselves to trees for their growth and support. They absorb nutrition from the host tree and cause it to struggle to obtain sunlight and nutrients. This indicates that Strangler figs is a parasite to the trees.
Orchids are also plants that attach themselves to tropical trees. However, orchids don’t harm the host. Orchids obtain sunlight and moisture from their surroundings. This indicates that orchids are in a commensalist relationship with the trees.
Both Strangler figs and orchids exhibit symbiotic relationship of two different kinds, namely, parasitism and commensalism.
Yes. The bubbling of hydrogen peroxide is due to the formation of oxygen from it by this following reaction:
H2O2 ==> H2O + O2
There's a release of dioxygen, that's why the reaction is foamy.
In fact, this chemical reaction is very slow. It takes several weeks for the hydrogen peroxide to be transformed into oxygen at room temperature. But like most chemical reactions, it can be accelerated, by heating, or by catalyzing it.
So, the liquid hydrogen peroxide that is sold in the stores is an unstable solution, especially when it's open. That's why these bottles should not be kept very long,
