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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?
Q. Why does not a long lasting vaccine against common cold exist yet? Viruses that present a high mutation rate like the virus that causes the common cold escape easily from th
A 70-year old woman presents with a 1-hour history of crushing substernal chest pain. Shortly after admission, the patient expires. An autopsy reveals calcium deposits in the intim
PLACENTA - A common tissue of foetus & mother (uterus) which is physical, physiological & endocrinal connection is known as placenta. FUNCTIO N - To provide nutrients
Relative to carrying capacity, what may result from unbridled continued growth of our population.
Pick up just a tiny bit of soil and you will discover a whole new world. Researchers have found that one pinch of soil may contain more than 30,000 protozoa, 50,000 algae, 400,000
What are quantitative data? Give two examples of quantitative data. Quantitative data are data that can be calculated in numbers. Examples contain the dimensions of an objec
Illustrate the theory of Goldman according to corneal transparency. Goldman's Theory: The fibrils are small in relation to light and do not interfere with light transmissi
What is crossing over? In which period of meiosis does this event occur? Crossing over is the eventual exchange of chromosomal fragments among homologous chromosomes. The pheno
Hydrops allantois (Hydro allantois) This condition is uncommonly seen in dairy cattle and buffaloes. Accumulation of excessive allantoic fluid may be progressive after mid ges
What is the cost-benefit relationship regarding sewage treatment as a method to fight water pollution? To treat sewage is much cheaper for society. The non treated sewage pollu
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