The movement of water from an area of higher water potential to an area of lower water potential across a semipermeable membrane is termed as:

The organisms that keep their internal fluids isotonic to their environment by maintaining an internal salinity similar to their ambient conditions are called:

ADH secretion stimulates the synthesis and insertion of which of the following into the membranes of the distal convoluted tubule and collecting duct principal cells?

Which portion of the nephron is impermeable to water?

Nitrogenous wastes tend to form toxic ammonia, which must be converted into a less toxic form before being eliminated from the body. Reptiles and birds convert ammonia to _________, while mammals convert it to ________.