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Given that DNA replication is achieved by bumbling Brownian motion and ordinary thermodynamics in a biochemical porridge at a temperature of 35 C, it's astonishing that the error-rate of DNA replication is about 10-9 per replicated nucleotide. How can this reliability be achieved, given that the energetic difference between a correct base-pairing and an incorrect one is only one or two hydrogen bonds and the thermal energy kT is only about a factor of four smaller than the free energy associated with a hydrogen bond? If ordinary thermodynamics is what favours correct base-pairing, surely the frequency of incorrect base-pairing should be about
if an oscillation of a mass on a spring has 16 times the energy of another oscillation of the same mass on the same
The question reads: A spaceship is approaching a space station at aspeed of 1.8 x 105 m/s. What is the change in frequency
Two capacitors of capacitance 3C and 5C (where C = 0.06 F) are connected in series with a resistor of resistance R = 6.5. How long will it take the amount of charge in the circuit
What is a multiplex PCR? What differs in this reaction from a traditional PCR?
(a) If a person can jump a maximum horizontal distance (by using a 45°projection angle) of2.17mon Earth, what would be his maximum range on the Moon, where the free-fall acceleration isg/6andg= 9.80 m/s2?
A torsion pendulum is made from a disk of mass m = 7.1 kg and radius R = 0.71 m. What is the angular frequency of oscillation of this torsion pendulum
a spring has a constant k=8.75 N/m. if the spring is displaced 8.150 m from its equilibrium position, what is the force that the spring exerts
A bottle has a mass of 35.00g when empty and 98.44g when filled with water. When filled with another liquid, the mass is 88.78g. What is the specific gravity of this other fluid
at what speed must an object be moving in order that it haskinetic energy 1.50 times its rest energy
a what is the rate of energy loss in watts per square meter through a glass window 1.6 mm thick if the outside
An astronaut at rest on Earth has a heartbeat rate of 75 beats/min. When the astronaut is traveling in a spaceship at 0.89c, what will this rate be as measured by the following: an observer also in the ship, an observer at rest on Earth
An isolated conducting sphere has a 9cm radius. One wire carries a current of 1.000 002 0 A into it.Another wire carries a current of 1.000 000 0 A out of it. How longwould it take for the sphere to increase in potential by800 V?
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