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Explain Antibodies
Antibodies (also referred to as immunoglobulins and garnmaglobulins) are produced by plasma cells. They are Y-shaped proteins that each respond to a specific antigen. What is an antigen? The foreign matter (bacteria, virus or toxin) that enters the body and elicits a specific immune response by lymphocytes is called an antigen or immunogen. It stimulates the immune system to produce protective chemicals or special cells to destroy the antigens. These protective chemicals are called antibodies.
how many human body systems ?
Disposal of Chemical Wastes : We shall deal with some commonly occurring chemical wastes. If you need to know more details covering the disposal of a wide range of chemicals, you
Define the Factors That Influence the Facilitated Diffusion Facilitated diffusion is influenced by the following factors: Minor differences in the molecular structure ma
Explain Bile pigments - Constituents of Bile The red blood cells are broken down when they are old (life span of red blood cell is 120 days). They are taken up by the reticuloe
Explain the Duodenum The first part of the small intestine is called the diodenum. It is about 10 inches in length. At the mid-point of the duodenum, there is a common opening
what is global warming?
Hard and soft water in cleaning Prepare two samples of dirty cloth. Wash one in soft water with soap unless it is clean. Wash the other cloth in hard water for the similar leng
Chain Reaction: When the atomic nucleus splits, it not only gives off energy, but also throws out two or three more neutrons. 'These new neutrons can, in turn, split two or
descibe the factors which decidethe broad area of scientific activity?
Explain the Phagocytosis Phagocytosis includes the ingestion of particulate material including complete pathogenic microorganisms. The plasma membrane expands around the partic
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