Answer:
Innate immunity is a non-specific immune system which provides defence against any pathogenic microorganism in early stages. It includes physical barrier such as skin, chemical barriers such as saliva, tears, et cetera, phagocytic cells such as macrophages, et cetera.
Acquired immune system is the one which develops after exposure to pathogen or antigen. It is highly specific in nature. It includes B-lymphocytes and T-lymphocytes. It includes the production of antibodies.
Vaccines are used to develop acquired immunity in people. The process is termed as vaccination or immunisation. Heat-killed or weakened pathogen or antigen is inserted into a person after which a person develops antibodies and memory cells against that pathogen or disease. So, the immune system acts more vigorously against that pathogen in secondary infection.
Thus, a person becomes immunised.
Answer:
Y- x+ Y-
Explanation:
when an atom loses electrons the atom the result is a positive ion. when an atom gains an electron, the result is a negative ion
Answer: Innovations
Explanation:
Innovation is of fundamental importance for enhancing organizational performance and the survival of an organization. Organizations must constantly analyze their external environments and their competition for innovation that may reduce or eliminate a competitive advantage. Innovation enables organizations to remain relevant in the competitive market, it also plays an important role in economic growth. The ability to resolve critical problems within an organization, depends on new innovations.
The cell is hypotonic, when the cell over-expands breaks.
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