eng
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chsl Typing test 2022

created Jun 30th 2022, 07:45 by Anjanbahuguna1


2


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135 words
29 completed
00:00
The antigen-antibody immunological reaction is used Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by an very often digested by macrophages and polymorphs. The proves of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody: the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.
Modern civilisation is completely dependent on energy, which has therefore to be abundant and also economical. About 85% of the world's energy is supplied by oil, coal and natural gas while nuclear, hydro, wind and solar power and biomass supply the rest, coal, nuclear and hydro are used primarily to generate electricity while natural gas is widely used for heating. Biomass is used both for heating and cooking. The wind and solar power is the future's hope as they are sustainable energy sources. Oil powers almost all machines that move and that makes oil uniquely versatile. Oil powered airplanes carry 500 people across the widest oceans at nearly the speed of sound. Oil powered machines produce and transport food. Oil powered machines are ubiquitous. Clearly, we live in the age of oil but it is drawing to a close.

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