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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?
Which of the below terms is also called "cancer of the blood" - an uncontrolled, greatly accelerated production of white cells. Is it: a) Leukemia b) Polycythemia c) sick
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What is the difference between the concepts of food chain and food web? The chain method is a theoretical model to study the energy flux in ecosystems. Actually in an ecosystem
how is urea formed in the human body?
Extremes of Heat and Cold Deserts are regions of aridity with rainfall of less than 20 cm per year and the soil, though L, fertile, is too porous to retain any water. In summer
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Explain Direct Microscopic Count - Measurement of Microbes? The most obvious way to determine microbial number is through direct counting under a microscope. In this method, a
Explain Monascus species Most of the reports of food colourants from microbial sources involve Monascus species, particularly Monascus purpureus, followed by Rhodotorula speci
Explain the Occurrence of vitamin B 6 Vitamin B 6 activity is attributed to the 3 compounds-pyridoxol (pyridoxine), pyridoxal and pyridoxamine, generally comprised in the vit
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