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Your Accelerated Eyes

When a beam of light hits your eye, a chain of events is set off that is really quite amazing.  Kendall J. Blumer (Washington University School of Medicine) describes a little of it in the Jan. 1 issue of Nature.1  You don’t have to understand the following description; just be glad you don’t have to […]

Life Runs on Waterwheels

The cells of every living thing are filled with molecular machines, and one of the most fascinating is a rotary motor called ATP synthase (see April 2002 back issue, opening paragraph).  This is a true mechanical/electrical motor, found in every living thing from bacteria to elephants and palm trees.  It is really two motors in […]

Intracellular Railroad Has Park-and-Ride System

Cells are like miniaturized cities, with elaborate transportation systems ferrying their cargo to and fro (see Feb. 25 headline).  Just like a city may have railroads, busses, cars and monorails, the cell has multiple kinds of transport motors: dyneins, kinesins, and myosins.  Scientists have learned that most of the roadways are like one-way monorails: actin […]
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