Examlex
HIV has an RNA genome that is converted to DNA when infecting a human immune cell.This type of virus is called a ________.
Solute Gradient
A solute gradient involves the variation of solute concentration across a distance, which can drive various biological processes, including diffusion and osmosis.
Medullary Concentration Gradient
A gradient of solute concentration in the kidney medulla that facilitates water reabsorption and urine concentration through osmosis.
Urea Molecules
Organic compounds and the main nitrogen-containing substance in the urine of mammals, formed in the liver from ammonia and carbon dioxide.
Ascending Limb
The part of the loop of Henle in the nephron that transports fluid from the lower to the upper parts of the kidney.
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