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Consider a simple spherical model cell that consists of cytoplasm and a plasma membrane.
The cell's initial volume is 2 nL and contains 0.2 M protein. The cell is placed in a large volume of 0.05 M CaCl2. Neither Ca++ nor Cl- can cross the plasma membrane and enter the cell. Are the 0.05 M CaCl2 solutions hypotonic, isotonic or hypertonic relative to the osmolarity inside the cell? Describe what happens to the mathematically cell as it achieves equilibrium in this new environment. What will be the final osmolarity of the cell? What will be its final volume?
Thalassemia Thalassemias are the commonest hemolytic anaemias or disorder seen in children in India. This is characterised by deficiency in the synthesis of one of the norm
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what is a proliferation
Q. What are the major representatives of the pteridophytes? Is this plant group phanerogamic or cryptogamic? The better known pteridophytes are the ferns and the maidenhairs, f
How is the concept of chromosome related to the concept of the gene? A chromosome is a DNA molecule and chromosome may contain several different genes and as well DNA portions
What is the Mendel's first law? The Mendel's first law postulates that a characteristic (trait) of an individual is always verified by two factors, one inherited from the fathe
Neuron A is a healthy neuron with all the usual ion channels. When at rest with a membrane voltage of R millivolts, neuron A produces no action potentials. The voltage thresh
Explain Point Mutations gene? Mutations involving single genes occur by addition, substitution, or deletion of a single base in DNA. Such mutations, called point mutations, ca
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BIOLOGY IN DISPELLING MYTHS AND MISBELIEFS - Varieties of myths still exist in our society, and can be removed by the knowledge of Biology. Some of these are- 1. Snake
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