The ATP molecule is composed of three components. At the centre is a sugar molecule, ribose (the same sugar that forms the basis of RNA). Attached to one side of this is a base (a group consisting of linked rings of carbon and nitrogen atoms); in this case the base is adenine.
<u>The structural differences between prokaryotes and eukaryotes:</u>
The main differences between the prokaryotes and eukaryotes are the presence of nucleus in the eukaryotic cells and its absence of nuleus in prokaryotes.
Also, prokaryotes are single-celled, so that a cell is a whole organism. On the other hand, eukaryotes are mostly multi cellular, and therefore more complex. More complex DNA is in the nucleus in eukaryotic cells, that allow them to carry out a wide range of functions. Prokaryotes, as a single cell, have the features of simple present.
The change of maximum heart rate (MHR) is the same from ages 20 to 26. At age 20, a person has an MHR of 200 bpm and at the age of 26, a person has an MHR of 194 bpm, there's a 4 bpm difference. While at the age of 40, a person has an MHR of 185 bpm and at the age of 46, a person has an MHR of 182 bpm, there's a difference 4 bpm. Therefore, the change in MHR for the same range (20-26) and (40-46) are the same.