The U.S. Environmental Protection Agency said Wednesday that the average fuel economy of 2015 model-year vehicles increased 0.5 mile per gallon to a record high of 24.8 miles per gallon. Mazda had the highest average fuel economy of 29.6 mpg, the EPA said. Fiat Chrysler had the lowest, at 20.8 mpg. Most manufacturers improved over 2014, but General Motors Co. and Toyota Motor Corp. both had lower fuel economy in 2015 because they produced more trucks. Weight loss is one reason that fuel economy is increasing.
Prokaryotes and eukaryotes both have a plasma membrane. Prokaryotes also have a cell wall. Some eukaryotes also have cell walls, including plant cells and fungi. Prokaryotes and eukaryotes both have a plasma membrane. Prokaryotes also have a cell wall. Some eukaryotes also have cell walls, including plant cells and fungi.
Membranes. Most prokaryotes are bacteria, while humans, animals, plants and fungi are eukaryotes.The prokaryotic cell has only one membrane, the plasma membrane, which surrounds its cellular contents.The eukaryotic cell also has a plasma membrane, but, in addition, it is filled with many membrane-enclosed compartments.itochondria and Chloroplasts. Eukaryotes contain mitochondria or chloroplasts. Mitochondria within animal cells and chloroplasts within plant cells look like prokaryotes. Mitochondria and chloroplasts are similar in size and features to prokaryotes.