Answer:
1 mol of Rubisco weights 2.045 x 10^(-21) Lbs.
Explanation:
Rubisco is a complex protein made up of 8 large subunits and 8 small subunitss making the whole enzyme complex of approximately 560 Kilo Daltons (kDa) in size. To solve this problem, first you have to recognize that in 1 mol of Rubisco will be 8 large subunits and 8 small subunits. Then you must consider the equivalence between KDa and kilograms.
1 kDa = 1.66 x 10^(-24) Kg
⇒ 560 kDa x [(1.66 x 10^(-24) Kg)/1 kDa]
⇒ 9.296 x 10^(-22) Kg.
Secondly, you have to consider the relation between kilograms and pound given in the problem.
1 Kg = 2.2 Lbs ⇒ [9.296 x 10^(-22) Kg] x (2.2 Lbs/ 1 Kg)
⇒ 2.045 x 10^(-21) Lbs.
Summarizing, 1 mol of Rubisco weights 2.045 x 10^(-21) Lbs.
