Help needed please!!

What are the four basic classes of organic molecules how do they differ structurally and functionally

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.

Which of these correctly describes the difference between processes that take place in prokaryotic and eukaryotic cells?