It has recently become possible to "weigh" dna molecules by
Answers
Answer:
It has recently become possible to “weigh” DNA molecules by measuring the influence of their mass on a nano-oscillator. FIGURE shows a thin rectangular cantilever etched out of silicon (density 2300 kg/m3 ) with a small gold dot at the end. If pulled down and released, the end of the cantilever vibrates with simple harmonic motion, moving up and down like a diving board after a jump. When bathed with DNA molecules whose ends have been modified to bind with gold, one or more molecules may attach to the gold dot. The addition of their mass causes a very slight—but measurable—decrease in the oscillation frequency.
Answer:
General Nucleic Acid Data:
One dalton is 1.67 x 10-24grams, so the human genome weighs 3.59 x 10-12 grams (10-12 grams is also known as a picogram).