Noun. 1. ATP-a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions. adenosine triphosphate. nucleotide, base-a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA).TP-a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions. adenosine triphosphate. nucleotide, base-a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA).
The snowy owl (Bubo scandiacus) is a large, white owl of the typical owl family. Snowy owls are native to Arctic regions in North America and Eurasia.Younger snowy owls start with darker plumage, which turns lighter as they get older. Males are almost all white, while females have more flecks of gray plumage.his yellow-eyed, black-beaked white bird is easily recognizable. It is 52â71 cm (20â28 in) long, with a 125â150 cm (49â59 in) wingspan. Also, these owls can weigh anywhere from 1.6 to 3 kg (3.5 to 6.6 lb). It is one of the largest species of owl and, in North America, is on average the heaviest owl species.
There aren't many birds or mammals that prey on the Great Horned Owl, but it does have its threats. Like most species, man plays a role in threatening the population of Great Horned owls.Loss of habitat through urban sprawl decreases the owlâs nesting and hunting territories. Canadian and Pacific Northwest Great Horned owls are very dark, while the birds found in arid regions are usually very sandy in color. 2  In the Arctic they are practically white. 3  If a Great Horned owl was the same size as a human, its eyes would be as big as oranges. 4  Great Horned owls take life-long mates.