A water desalination plant is set up near a salt marsh containing water that is 0.48 M . Calculate the minimum osmotic pressure that must be applied at 20.°C to purify the water by reverse osmosis. Assume is completely dissociated. Osmotic pressure = atm

Disinfection of impression materials is usually accomplished by a. sterilization with high heat. b. spray or immersion in a chemical disinfectant. c. sterilization with steam under pressure. d. allowing the impression to sit 24 hours in water until all the organisms die.

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

In the presence of oxygen, glycolysis is followed a. the krebs cycle b. lactic acid fermentation c. alcoholic fermentation d. photosynthesis