The answer is IgA.
The immunoglobulin can occur as a monomer or dimer. The dimeric form is called secretory-IgA because it is also secreted by glands that
produce saliva, tears, sweat, and in the lumen
of the gastrointestinal tract. It is the most secreted Immunoglobulin.
Answer:
c. Visual association areas
Explanation:
The visual association areas are part of the cerebral cortex and are responsible for allowing human beings to have special perception, movement perception, visual perception processing and recognition of familiar objects. These areas are extremely important for the maintenance of human activities, and the deterioration or disturbance of these causes serious problems, difficult to be resolved.
The correct option is C.
Pilli is a long protein filament which attach reproducing cells together during conjugation. This attachment allows the cells to exchange the genetic materials, that is, plasmid between them.
The best adapted organisms are most likely to survive
