1 Plant/Animal Cell Model (interactive) 2  Pumping Heart Cells. 3  Apoptosis (video) 4  Cell Cycle (interactive) 5  Mitosis (interactive) 6  Meiosis (interactive)  Microscopy.
Amtrakâs Acela Express is currently the fastest train in the US, capable of a maximum speed of 150 mph (241 km/h) â although it typically travels at about half that speed. Depending on whose definition you go by, that may or may not qualify it as a high-speed train. Source: State of California (PDF) via Inhabitat.
Answer Wiki. According to this chart the Lexington express #4 and #5 travel at about 2 mph faster than the local #6. But we, and everyone else who rides these trains, know the #6 seems always to race with the #4 and #5 and usually pulls ahead until it comes to a local station and must stop, allowing the express to pass.