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Ordinary osmosis cannot be used to purify water. If the applied pressure exceeds osmotic pressure then water starts moving from solution side to pure solvent side. This is reverse osmosis, by which pure water is squeezed out of impure water.
Advantage: this process removes lead, calcium, magnesium, sodium, chloride, nitrate, sulphate, etc.
Disadvantages: it requires large volume of water. It may take as much as 90 gallons of water to recover 5 gallons of usable water.
What are trophic levels? How many trophic levels can a food chain have? The Trophic levels correspond to positions on a food chain. thus producers always belong to the first tr
Zebrafish are raised in fish tanks with one family per tank. The mutation spadetail is a recessive lethal. A stock tank for spadetail was made by crossing two carriers. The fish in
Matthew Meselson and Frank Stahl grew bacteria in media having either N14 or N15 for various numbers of cell divisions. DNA from the bacterial samples were isolated and spun within
Northern blot is a technique for analyzing mixtures of RNA by transfer of size-separated RNA fragments to a synthetic membrane, the presence and rough size of one particular type
SKELETA L TISSUES - These connective tissues form the endoskeleton of the vertebrates. These support the body, protect the various organs and help in locomotion. Skel
Q. What is the cause of the immunodeficiency presented by AIDS patients? The cause of the immunodeficiency obtainable by AIDS patients is the destruction of CD4 T helper lympho
Explain about Skeletal muscle These are attached to the bones by tendons, which help in the movement of the part of the skeleton. These muscles are controlled by our conscious
Which two gases are exchanged when living organisms breathe? Oxygen and carbon dioxide are the gases exchanged when living organisms breathe.
Explain Transition Period from Renaissance to Modern Period? The transition period from the Renaissance to the Modern period produced many notable workers and much literature.
Which of the following best defines the reason why DNA ligase is needed to complete the replication of internal chromosomal segments? A. DNA ligase is able to delete the last n
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