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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?
In many animals, glucose, rather than starch, is transported by the blood through the body to all the cells. Starches in many foods are digested to yield glucose. Why is the digest
What else is carried in the plasma? In addition to proteins, plasma having salts (ions), glucose, lipids and amino acids, hormones, carbon dioxide and urea
Asteroid impacts: The hypothesis which links certain mass extinction events with the impact of the comet or asteroid, most particularly the mass extinction 65 million years which
Checkpoints and Cell Cycle Control Cell cycle checkpoints are control mechanisms which ensure the fidelity of cell division within eukaryotic cells. These checkpoints confirm w
basis of genetic transplantation
Convert 3.5°F to Celsius Four hundred pounds is how many kilograms?
Q. What are some prophylactic measures against HIV infection? The major prophylactic measures against HIV infection are: the use of condoms in sexual relations, not to share ne
what is the taxonomic classification for the protist Archaeplastida?
Vegetative Development - Differentiation It is referred to as qualitative changes that lead to increased specialisation. For example, the formation of cells and tissues of roo
What is yellow fever? Yellow fever is a viral infection that happens mainly in Central Africa and in the Amazon region of South America. It is prevented through vaccination and
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