You have a stock bottle of 4mM tetrodotoxin solution, but your protocol states that you need 2 ml of 0.5mM tetrodotoxin (MW=319.27 g/mol). How much of your 4mM

stock solution (liquid) should you use to make the 0.5mM solution?

the backbone of the dna and rna compound is sugar phosphate.

phosphorus cycle

explanation:

the phosphorus cycle is the way that compounds of the element phosphorus, an essential nutrient, are recycled in the environment. plants absorb phosphorus compounds from the soil, and decaying organic matter, including both plant matter and animal droppings, returns it to the soil. phosphorus is a vital part of atp, the energy currency of all cells, and is vital to all forms of life.