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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.
What is a hormone? A hormone, as you may already know, can be described as a chemical substance which having been formed in one particular organ or a gland is carried in the bl
modes of nutrition and their examples
Q.What is soil erosion? The blowing away or washing away of land surface by wind or water is known as soil erosion.
Explain the Sensory and the Motor Neurons The peripheral nervous system consists of 1. Sensory neurons running from stimulus receptors that inform the central nervous syste
1. Define the cell theory. 2. Contrast the light microscope with the transmission electron microscope. 3. Describe the structure and function of the plasma membrane, chro
Advantages of water in chemical weathering Water is an essential factor of chemical weathering and when it contains dissolved salts and acids it is all the more effective. It
Explain the Gastric Phase - Mechanism of Secretion of Gastric Juice Another 45% of the gastric secretion is discharged in this phase. The mechanical presence of food in the ant
To show how soil is formed from rocks Carefully heat a piece of glass in a flame and then plunge it into cold water. The unexpected cooling of the glass causes it to contract u
what does occur chemiial changes during cleavage?
Define the process of Soil acidity Acid soils are made more suitable for agricultural use by liming which raises the soil pH. Soil acidity is commonly decreased by adding carb
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