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Galvanotaxis - Modes of Cell Movement
Galvanotaxis considers to the movement of cells in response to a potential variation between cells. It is suggested that there are voltage differences among embryonic regions that could play an important role in morphogenesis. Minute electric fields of the order of 10 to 100 mv/mm appear to be enough to alter the direction of nerve growth. Nuccitelli and Erickson (1984) displayed that embryonic chick fibroblasts migrate toward negative pole when cultured in small steady electrical field. Early chick embryos, regenerating blastema of amphibians and moth ovaries while transportation of yolk proteins occurs, arc some of the structures where large electric currents have been detected.
Q. What are the procedures of the photochemical stage of the photosynthesis process? Photolysis of water, with liberation of molecular photophosphorylation and oxygen of ADP, w
mode of respiration in difrent animals
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Q. What is the difference between primary ecological succession and secondary ecological succession? The Primary ecological succession is the changing sequence of communities f
Lipids are essential fats that have much importance to the human body. Lipids are biological molecules that are insoluble in aqueous solutions and soluble in organic solvents are c
GROWTH AT DIFFERENT LEVELS - 1. Molecular level - It involves synthesis of new molecules and their aggregation into organellae. 2. Cellular level - It includes
What is the first polar body? How different is it from the oocyte II? In oogenesis the oogonium differentiates into oocyte I (2n) and this cell enters meiosis. After finishing
What is the thigmotropism? The Thigmotropism is the growth or movement of the plant in response to mechanical stimuli (touch or physical contact), as when a plant grows around
Q. How to check Quality of grains? Food grains for human consumption are whole or broken kernels of cereals, millets and pulses. According to PFA, they shall be free from added
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