The closer to the equator a place is the hotter it will be, as the Sahara desert is right on the equator it is one of the hottest places on Earth, and to answer your question, Average yearly temperatures generally decrease as you move further away from the equator.
According to reaserch ,
The presence of cellular structures in eukaryotic cells are similar to prokaryotes. Mitochondria and chloroplasts are thought to have once been prokaryotic cells that were incorporated into larger prokaryotic cells. There are a number of biochemical similarities between the eukaryotic organelles and prokaryotic cells. Eukaryotic organelles are still the same size as the prokaryotic cells from which they are believed to have been derived.