Atp is a that is most closely related chemically to
a-monosaccharide; glucose
b-amino acid; alanine
c-amino acid; gtp
d-nucleotide; gtp

ATP is a nucleotide in which is also called the nucleoside triphosphate. So it is classified as a nucleotide in the first statement. In the second blank, the answer is GTP, for ATP's closely related chemical is the GTP. The correct answer in the choices above is letter D.

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.