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Examine table.s and express a) The energy required to break one bond in DNA in eV, b) the kinetic energy of an air molecule (10^(-2) J in eV, c) The daily intake of a human adult in kilocalories.

Answer» <html><body><p></p>Solution :a) Energy required to break one bond of DNA is: <br/> `(10^(-20)/(1.6 xx 10^(-19) J//eV) =~ 0.06 eV` <br/> Note, 0.1eV = 100meV (100 millielectron <a href="https://interviewquestions.tuteehub.com/tag/volt-1447797" style="font-weight:bold;" target="_blank" title="Click to know more about VOLT">VOLT</a>). B) the kinetic energy of an air molecule is <br/> `(10^(-21))/(1.6 xx 10^(-19)J//.eV=~ 0.0062eV` <br/> this is the same as 6.2 meV. <br/> c) The average human consumption in a <a href="https://interviewquestions.tuteehub.com/tag/day-944776" style="font-weight:bold;" target="_blank" title="Click to know more about DAY">DAY</a> is <br/> `10^(7)/(4.2xx 10^(3)J/kcal) -~2400 kcal` We point out a common misconception created by newspapers and magzines. They mention food <a href="https://interviewquestions.tuteehub.com/tag/values-25920" style="font-weight:bold;" target="_blank" title="Click to know more about VALUES">VALUES</a> in calories and urge us to restrict diet <a href="https://interviewquestions.tuteehub.com/tag/intake-1046890" style="font-weight:bold;" target="_blank" title="Click to know more about INTAKE">INTAKE</a> to below 2400 claories. What they should be saying in kilocalories (kcal) and not calories. A person <a href="https://interviewquestions.tuteehub.com/tag/consuming-931375" style="font-weight:bold;" target="_blank" title="Click to know more about CONSUMING">CONSUMING</a> 2400 calories a day will soon starve to death 1 food calorie is 1 kcal.</body></html>


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