5) Theoretically, ATP did not have to become our bodies' main energy currency. Two alternative carriers, acetyl phosphate and S-adenosylmethionine could have been utilized, rather than ATP. AG" for acetyl phosphate hydrolysis is -43.3 kJ/mol and AG" for S- adenosylmethionine hydrolysis is -25.6 kJ/mol. (a) Calculate the weight of each alternative energy carrier that would need to be consumed by humans on a 2000 calorie per day diet if our bodies could not recycle it. Assume a 50% absorption of energy from our diet. (b) If our bodies contain 25g of each alternative energy carrier and they CAN be recycled, how many times would each molecule of each energy carrier need to be recycled? (c) Comment on the special properties of ATP and why it is unlikely that these alternative carriers would be utilized biologically.
5) Theoretically, ATP did not have to become our bodies' main energy currency. Two alternative carriers, acetyl phosphate and S-adenosylmethionine could have been utilized, rather than ATP. AG" for acetyl phosphate hydrolysis is -43.3 kJ/mol and AG" for S- adenosylmethionine hydrolysis is -25.6 kJ/mol. (a) Calculate the weight of each alternative energy carrier that would need to be consumed by humans on a 2000 calorie per day diet if our bodies could not recycle it. Assume a 50% absorption of energy from our diet. (b) If our bodies contain 25g of each alternative energy carrier and they CAN be recycled, how many times would each molecule of each energy carrier need to be recycled? (c) Comment on the special properties of ATP and why it is unlikely that these alternative carriers would be utilized biologically.
Chapter1: Numerals And Fractions
Section: Chapter Questions
Problem 5RP
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Transcribed Image Text:5) Theoretically, ATP did not have to become our bodies' main energy currency. Two
alternative carriers, acetyl phosphate and S-adenosylmethionine could have been utilized,
rather than ATP. AG" for acetyl phosphate hydrolysis is -43.3 kJ/mol and AG" for S-
adenosylmethionine hydrolysis is -25.6 kJ/mol.
(a) Calculate the weight of each alternative energy carrier that would need to be
consumed by humans on a 2000 calorie per day diet if our bodies could not recycle it.
Assume a 50% absorption of energy from our diet.
(b) If our bodies contain 25g of each alternative energy carrier and they CAN be recycled,
how many times would each molecule of each energy carrier need to be recycled?
(c) Comment on the special properties of ATP and why it is unlikely that these alternative
carriers would be utilized biologically.
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