遇到一個問題 不知道是什麼意思 Suppose you wish to synthesize a pool of RNA moleculars that contain all four bases at each of 40 positions. How much RNA must you have in grams if the pool at least a single molecular of each sequence? The average molecular weight of a nucleotide is 330 gram/mole. 是說64*40*330/亞佛加蕨數嗎？ 還有另一個問題 The fraction of open channels at 5mV increments at -45mV and ending at +5 mV at 20度C is 0.02, 0.04, 0.09, 0.19, 0.37, 0.59, 0.78, 0.89, 0.95, 0.98 and 0.99. A. At what voltage are half the channels open? B. What is the value of the gating charge? C. How much free energy is contributed by the movement of gating charge in the transition from -45mV to +5mV? 這個就不懂在問什麼勒.... 謝謝解答了... -- ╮ ╭═╮ ╮ ╭═╮╭═╮╭═╮╭╬╯║ ║╭═╮╮ ╮╭═╮╮═╮╰╦╮╭═╮ ║ ╭═╣╰═╮ ║ ╰╭╯╠═╝ ║║ ╭═╣║ ║ ║ ╭═╣ ╰═╯╰═╰╰═╯ ╰╯╰╯╯╰═╯ ╰ ╰═╰╰ ╰╰╩═╰═╰ --

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