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What is Specific defence mechanism
Specific: These relate to specialized cells located throughout the body which respond to invasion of foreign materials/microorganisms such as bacteria, virus, fungi or unwanted substances produced or entering the body. Some specific cells are fixed in tissues such as thymus, lymph nodes, bone marrow, spleen, lymphoid tissue of the respiratory, gastrointestinal and genitourinary tract, kupffer cells of the liver and Peyer's patches of the small intestine.
KARYOTHEC A OR NUCLEAR MEMBRANE It is also called Nucleolemma, term given by Erclab & Hertwig. Karyotheca composed of two unit membranes separated by a 150-300 A° wide p
Chemical Stress - Atmospheric imbalances At least two components of the environment, oxygen and carbon dioxide that plants require are predominantly in the gaseous form. As yo
In this section, we shall discuss a classic example of natulal selection in action. In the preceding unit, it was stated that natural selection always aims at eliminating alleles,
Explain Receptor Proteins These are built into the membrane of a nerve cell and they detect chemical signals released by other nerve cells. Receptor proteins are involved in
CELL MEMBRANE It is biological, thin, elastic, flexible & selective permeable membrane. Term "Cell membrane" was coined by Negeli & Crammer 1855. Term " Plasma membr
Q. What is the difference between heterologous and homologous immunoglobulins? Homologous immunoglobulin is the human from the same species immunoglobulin and In case of inocul
Palpation: Use the ball of one hand and move the hand from one side of the posterior thorax to other. Note presence of swelling, masses, muscle tone, fremitus and crepitation.
The Alanine cycle Follow the alanine link in the alanine cycle. The process goes as under: 1) Pyruvate formed from glycolysis in the muscle is converted to alanine by t
What are some examples of organs and tissues where mitosis is more frequent, less frequent or practically absent? Generally in vertebrates mitosis is more frequent in a tissue
General characteristics of phylum
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