Sodium and potassium are essential electrolytes that maintain water distribution in the body but are lost through sweat during exercise. Gatorade contains 160 milligrams of sodium and 45 milligrams of potassium per serving, while Powerade contains 150 milligrams of sodium and 35 milligrams of potassium per serving.
The number of chromosomes that a butterfly has varies widely. The  wood white butterfly can have anywhere from 56 to 106 chromosomes.  Some butterflies have as many as 380.
Top of page. Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. In fact, each species of plants and animals has a set number of chromosomes. A fruit fly, for example, has four pairs of chromosomes, while a rice plant has 12 and a dog, 39. Top of page.