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Determine about the microtubules
The microtubules are hollow tubular structures formed by a special arrangement of two proteins called the alpha and beta tubulins. The microtubules play a leading role during cell division. At that time the chromosomes attached to the mitotic spindle, composed of microtubular fibres, move apart due to contractions of the microtubule proteins. The motility of eukaryotic cells, the movement of flagella and cilia, the movement of the microvilli of the intestinal brush border cells, are all associated with microtubules. The movement of leukocytes in the blood stream and the transport of molecules along the axonal fibres are also due to contractions of the proteins constituting the microtubules. The cytoskeleton is, thus, an important structured feature of the cell, which is essential for the various kinds of movements associated with the cell and its internal structures. This is achieved by the special proteins that constitute the cytoskeleton, by a process of polymerisation and depolymerisation, resulting in changes in shape and thus resulting in movement.
Amphibian frog embryo
Cerebro-spinal Fluid - Formed mainly by choroid plexus and ependyma of ventricles. It comes out of medulla oblongeta by foramen of magandie and lushka . Slightly alkalin
Implant insertion The technique for insertion of the implant depends largely upon the system being used. In general, the final bone preparation site diameter is slightly smalle
The atomic number of the isotope 238U of uranium is 92. The nucleus of this isotope contains a) 184 protons, 92 electrons, and 54 neutrons. b) 92 protons and 146 neutrons. c) 92 pr
SIGNIFICANCE OF FERTILIZATION - 1. In fertilization process number of chromosome are diploid in zygote. 2. During fertilization male & female chromosomes are combi
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How do birds reproduce? Birds, like each vertebrate, have sexual reproduction. Their embryos develop within shelled eggs having extraembryonic membranes and outside the mother'
What is pasteurization of fruit juice?
Q. How does the depolarization of the neuronal membrane start? The primary cause of the neuronal depolarization is the binding of neurotransmitters released in the synapse by t
Dengue Dengue fever is a viral disease transmitted by mosquito bites that occurs worldwide in tropical and subtropical areas. Major epidemics have occurred in recent years in
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