2.
水稻种子中70%的磷以植酸形式存在。植酸易同铁、钙等金属离子或蛋白质结合排出体外,是多种动物的抗营养因子;同时,排出的大量磷进入水体易引起水华。
(1)酵母菌中植酸酶活性较高。下图是从不同类型酵母菌发酵液中提取植酸酶的工艺流程。
据图回答:
①植酸酶 (Ⅰ/Ⅱ)属于分泌蛋白。
②若植酸酶Ⅰ和Ⅱ的肽链组成不同,其差异体现在 。
③提纯的植酸酶需做活性条件测定。如下图为测定结果。因变量可以通过测定 来表示.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKwAAABqCAIAAACu4i0mAAAegklEQVR4nO1daVBUV9rG1JeqmVSl5sekZpL6pqaM0VIUcWWVRaSFBhdAQJYgq0YxrG4IyNKAgiNLBcQFVIxhU8AFjEgiUQjIGgkoiAra7Ls00A293HP6+3Gmz3doUBu4jW3Sz69Lc+5Zn/Nu5733qoiV+NNDha6KIIQAAIqiIIT4Twgh+lMJRQbNJBAKhQKBAK094gRFUQAAulpRQh6gkwQURYlEIqFQyOPxuru7BQIB+lMoFNLVihLyAP0kgBA+f/786NGjT58+RT9iHaGYgBK87468N9BMAqQFbty48e9//zslJQX9KBQKFWSKIQGsrTCwEaMgvZ030GwTQAhHRkYOHjy4YMECGxsbZB8IhUJFMAvIhReJRCKRCF8gtSUQCIRCIfr9T8UD2kiAACF88uSJqqqqiorKsmXLmpqaEAkUZE7fssuR0AISzHPH3i/oJAFa77S0tAULFqioqPztb3+Lj4/Hk0tjQzPtFVpX7LsKhcKGhobMzMykpKSkpKSsrKyKiorBwUHxZGnx51ENNJOgr6/P2tpaRUVFRUVlwYIFGzduHBgYeL9TiVkIIeTz+VevXjU3N1+1apWurq65ufnWrVsNDAzU1NQ2bNiQkJDQ09ODeIAs3D+Ji0snCQAAd+/e/etf//rxxx9//PHHH3300T/+8Y+7d++iaaWxoVkAQtjY2Lh///41a9bY29tnZ2e3trb29/f39/ez2ezi4uKIiAhdXV0jI6P8/HwkBrC58N47L2/QaRgODg76+PisW7fO09NzzZo1hw4dUlNTc3Fx4XK5dLUyOwAACgoKdHR0rK2ta2trKYqaWgZC2NraevDgwfXr18fHx/N4PAghMhX/8BqBThK8evUqNjb20aNHRUVFpqamfX19BQUFDg4O9fX1dLUie2eQayoWiymKSktL++qrr7755pvu7m4xEdIggVYaAJCVlbVu3bpDhw6NjIxgqxYbjJgQpKnxobOEThLweLyxsTEAwK1btxgMxqtXrwAAzc3NHR0d8zlNmAFInV+9evXLL7/08vLicDhSKyd1jeMcubm5S5Ys8fX1RTzASoF0HLDFoPjRsHeCZhdRLBYDAAoLC7ds2cJms9Ev82wT4I0OAKioqNDU1Ny3bx9iAGKGVGEEdAv6LwDg+vXrK1eu9PX1HRoaIu0DUhJ80AtPYgYkkHKZpK7JnVRYWLhjx47Ozk7S+aa/72/oIe5JR0eHlZWVqalpf38/YgC5imTPEcjQIRIhixYt8vT0RA4OSSA4+XiMDDC8kxkK6HnKRALSWUJjxhE3fI3nCIWNmUxma2srvlHOo5i0lkgGUBQVFxe3ePHi69ev4wJ4AfDKSd0uNbT09PSlS5cmJSWhMqSnQKoJagreHpJSNPUxMxKQlJeKv5L/vXHjhqGh4ZMnT/B0y3sYpK2Hpvjx48fa2touLi4CgYAshverlILHuxNXJRaLRSKRl5fX+vXrq6qq0KqTi0dSCisLzMKpPQSKerY+AxJMez1VKQAA8vPzNTU16+rqoORUSd7Ex8YgWgk+nx8aGqqmplZWVkaWeYvEhgQAAKgqAEBNTY2qqqqrq+vY2Ni0g50W09aP+KGAwekZkIDD4ZSUlJSWltbW1lZWVpaVldXV1dXU1DQ0NFRWVqanp7e0tKChXr9+ffXq1Y8ePZLRJpi71sDCGTVXVVWlpqa2d+9eKZmPiIJ4gMqTNWCKkM4FRVHHjx9fsmTJjz/+KCUwwHReBgmycilJ8OGRQCwWQwifP3++d+/ezMzMJ0+elJSUeHt7h4aG/v7770+fPr158yaDwbhz545YLAYA5OTkqKurV1dXk9vl7ZVTksju7IaBahAIBGiiw8LCvvzyy59//llKhuOVAwCgnJc31Uais7PTzMzM1tYWBZXfqfWnJQFpcyiaWTADEjQ3NwcEBKCJGB8fP3DggJeXF/rXy5cvDxw4UFtbKxaLAQDZ2dmqqqoPHjyAMoTfp07ZLACJxIVnz57p6+vb29uPj4/DN3inMraIilEUlZGRsXDhwrS0NHJDv0mtTKt04OS4gkJZBjMgQUtLi5eXV0pKyo0bN3JyckxNTQ0MDE6fPh0VFRUXF+fj44Mig8gmUFdXf/jwoSwkEL9LW8vYPbzVLl68uHjx4szMTCzzSQFOWrLvXAZM0MHBQQaDYW9vPzg4+E65BSdbnVIDnPtgacfMSODh4XH69OmioqKCggJjY2MNDY309PSMjIzU1NTdu3c/evRILDlGUldXLykpmTodb6p87iRAW3NkZGTXrl0aGhovX76EU6JD5BrI0hwkgkipqakrVqzIy8uDEAoEAoFA8E6RjvcA6bZ82CR4/vy5r68vcvz6+/ttbGz09PSKioq4XC6bzfby8qqpqRGLxQCAmzdvLl269JdffsGbRp5D+G/3kDFfWlq6fPnyw4cP0zLXpJZpa2vT0tLavXs3j8dDJoUs40JE5PP5pEk4RyuYdsxMEiASUBSVlZXl5+eXmppqZmZ25MiRR48eeXt7V1ZWiiUxV3V1dfQnWh45joAARVHR0dGqqqplZWVSxt3sKiRrEIlEPj4+qqqqlZWVcHLg6C23S3kEWBJMjV2+R8yABGw2+8CBA/fu3cvLyzt27FhTUxMA4Pbt2yYmJpmZmf7+/iQJVqxYgW0CeUsCvE6dnZ1MJnP79u3j4+NS/5p1zXjvAgBKSkqWLl0aFRWFrQoZOwYJH3ju1KQdMyBBR0eHq6trWFhYSkpKXV0dl8sdHh5+/fp1bW3tnTt3XFxcSktLxWIxACA3N/err74qKiqCEpeM9n6TVh4O3+bk5CxbtuzcuXM0toJ3M4SQx+NZW1tv2rQJR8TfaRNg+0PR3EISMyBBZ2eng4NDZGRkZWXlb7/9VlpaWlZWVltb29zcnJOT4+joiG2C27dvr1+/HhuGcho8nJz8w+fz/fz89PX10cEVLeJHyrCgKOrChQvr16/HgSNZaoCTg0tz7xXtmEHEkMfj1dTU9PT0IBnA4XDGxsZGRkY4HE5/f/+LFy+4XC4aaklJiZGREdKdcrKEyU2G8Ntvv23cuDEoKIhGYQsnu3bIMNLT0/P398ca5w8AWUmAz9rxL3V1dV1dXeQvQBKMKysrMzc3R2Fj+aXpocrxkwJnz57V09Ob9qSHlraAJNgcGBioq6uL4qE4YKCYW1xGyEoCgUDQ3d3d0tLS0dHR39//+PFjFxcXa2vruro6Npvd3Nycm5ubnZ2NJuXXX3/dtm0beYpIu0dE2gQQwuHh4T179tja2k5MTEB5+iMAgJqaGl1d3eTkZDw6qR3ywUFWEvD5/IaGhqysrIyMjO+++87Z2Xn79u12dnZaWlpHjhy5du3a2bNnL126NDExAQB48OABg8FAe0V+W4TUCNXV1fr6+iEhIVC28NTsmkOV8/l8Z2dnJycnFEFHjy7NQyxEfpiBOgAAjI6OJiUlffPNN46OjqmpqW1tbfb29pGRkampqY2NjXiaqqqqTE1NybMDOdkE+KAvOTkZm6JSeWD0tog2/eXLlw0MDLD7o1AHAbPAu0mABy8UCu/cuXP48OE7d+6cOHEiLS2ts7MzKCjo6dOnOTk527dv//7779F01NTUbNq0qbi4WK5zhJ00Dofj7Oy8ZcsWdGIk1+ZQ9LC9vd3MzCwmJgYQp9IfrlkgqyTg8Xj37t07fvx4YWFheXm5m5tbVFRUXl6eiYlJZGTk+fPnY2Njjxw5grKNq6qqjIyM7t+/j+0p+YUKAACVlZV6enphYWGkgpBHc1iqoYwjOzu7trY2KMlepL3FecMMSFBfX9/T09PX15eRkeHi4nLv3r2GhoaQkJC///3vx44d43K5r1+/RruwurqayWSWl5fLz0XEoCgqKSlJU1MTharkahMAIjUoLy/P0NCwoKAATslP+eAgqzpAx3HoemRk5KeffsrNza2rqzt+/HhSUhKSw6g8IoG5uXlpaSmULcY+C2DHfWhoyM3NzcLCYnR0VExHktLbG8WSv7Oz09jYOCQkRCR5avGPrw6kEm1bWlpsbGwWLlzo7u6OnufFAAA8fPiQwWDgU0T5uU9A8mRBQEAA2Vs5rQfeD2hCPD09N2/e3NzcrMjRQFkwM8Owp6entrb21q1bLBbLy8srLCyMxWKxWKzExMTMzMzi4uL+/n4AQHl5+ebNmysqKqZGmegFihFpaGggXTAPIGNi+fn5K1asuHTp0h+fBGKJJHjx4sUPP/yQnJycnp5+//790dFRCCGXyy0sLGSxWHZ2dkePHkWPnlVVVTGZTOSwUZL0bdqB/AIvL69du3aReeXyAySOJFCEytjY2MXFZXh4eB5alx9mIAkGBwdbWlqGhoamFhAIBD09PT09PSiXt6qqavPmzfJwo0n7HxkfxsbGMTExkEiEpwuYwZA4ASJbEYlEx44dW7t2bXl5uVQPpW5RcItBVkmAVhHp++Dg4LS0tO+++y4mJiY5OTkkJMTPzw89s4eDRbq6ushypuh77kBqTimKSkxMXL58eWFhoZxIgF0bTDtyIACA0tLSlStXJiYmiicTFJMAz4mcfBZaIKskQPIWAPDDDz98+umnurq6pqamRkZGGzdu/Pzzz1VVVV++fInKI8ddU1MTpePROHhSrkAIu7q6LC0tjYyMUPIn7UpHSupM1foQwvHx8a1btzo4OKDHHXEmMS6J+yy/g7S5YwbqQCAQcLnc8+fPf/rpp5s2bXJycvLw8LC2tl65ciWTyWxvb+/r60NnB9XV1ZqamtnZ2bR7B5BIXy4vL1+9ejVKJ5SHyCUtYpHk0fSpq3vy5MkVK1agZy6m9gQzCdXzoZJALNH6jY2N+fn5rq6uxsbGgYGBLBYrISEhKirKy8tr//79Z86cSU5Obm9vBwDU1tZqaWldvXpVTAR3595XUkmj/I6FCxemp6fLL3BLKiApkY51f3Nz86pVqwICArCSIruB1cEfgQR8Pr+9vf3XX389dOiQv7//mTNnIiMjExMTr1+/zmKxbG1t8/Pzm5qaUNi4pqZGS0srJycHK0W6uotneWRkxN3dXU9Pr7u7W06SQDw5x1DKvMXjEolELi4uhoaGz549m5aOJHcV0zycgYuIqBAbG+vk5HT+/Hlra2tTU9PMzExfX19jY+OOjg5UGKkDHR2drKws0raipbtQcj704MGDlStXBgcH4wAOenEmLa2QzZHGnZScxxbA5cuXv/jii3PnzkmpPynDkN6+0YgZhI1FItHo6GhERASTyTx+/LimpuYXX3xx5MgRe3t7AwMD9E4apDtLSkrWrl177do1LAmnnQIsUWXkCi6PNPHatWtra2shhOgd2lMtD9nlELnG5C24/9PaBKhdCOHAwMCGDRssLS37+vogkdek+MuPMAMSIIPc09PT3t4+KSnJwMBgyZIlCQkJAQEBampqubm5eDnv37+vrq6O1MFbZkHK/H7nauEVYrPZZmZm9vb2gDjJnSqrZV8DcluTIU4oOT7GzzKTtyA1jy6CgoKWLVuGjksUf9WlMDPvoK6uLjIy8tSpU2FhYQYGBv/617+Cg4PDw8NtbW0PHjzY2NiIJr20tHTVqlU5OTmyVI7nXca5AwDcvn174cKFUVFRYmITTzXdsdh4Z82QMADfVB7LIakmUJdKSkoWL17MYrFojIvMG2ZgE7S1tRUXFxcXFz98+PDatWs+Pj4WFhapqakZGRmZmZmxsbHx8fGjo6MAgMrKSm1tbSwb3lmzSOZ3SkNJOuGaNWuamprEk7XV1Bpk1Aik2B8fH8eHolISRUoSkDJMKBTa2NgwGIyXL1+SlsQ7R6QImEHK+fDwMJvN7u3tHRgYaGlpQUmnr169evbsWWtra29v7/DwMMq2q6mp0dPTQ5LgLTJZShO/pXVsWCCrc9WqVf7+/uQyzDEaQS72+Pg4l8ulJE8L4WWelmGkvLl06dKiRYuysrLEk0WL4lOB5ncbo0mpra01MDBAwaK5W0ak1qcoKj09fe3atejxD2pur7aQ6jlpzc20TghhZ2enjo7O7t278evyFDlKSGLGJJCy5vAak9u6oaGByWRmZGTgTTzr/pFiAELY29vr6upqZ2eHHnSha5ORg5rd7dg8XLduHXr2AT8QQUsP5YpZSgK8XfBKkLLxyZMnTCbzypUrmBlz6SIkQsVFRUUaGhr4mypzqVaqCVIjzFSG47FXV1erqalFRESgoAVdgkreoPO1thgNDQ0mJiaIBNjknnW1WBJwudyAgAAUmILTvZ6UFsxCwEBJHFMoFPr4+Ojo6NTX18M3vD5TAUHzN5DQXNTX1zOZTBTVn4uYxdUiN72mpkZTU/PgwYNI9r7lzVPzDFJWVVRUqKqqomx0ikhHUGTQ/A0kJP0aGhoYDMb3338PaUo0hRAKBILw8HAtLS30ekSc+EpL5+cI0v4ViURff/21oaEheqHfn4sEYsJQqK+vNzMzw2cHsgeCyHpIPQIAKCgoWLVqVUJCAt52ipPoTXYYAFBeXq6hoREfHy8i3pClyO4izZIAEb+hocHMzAzHCWaqZaEkjYXP5yMLi81mo0/V9Pb2ko67gswptigR1ymKOnXq1PLly1GCHSX5ZuiHfZQsC0h18Pjx482bNyMXcRbrhPmEVAmPxwsLC9PR0cGPOdPVZzkBQjgwMLBjxw4TExMUQBSJRHw+n8/nK2bn5UKCpqamrVu3Xr58Gc48swhKwsDoIXOkCBYtWhQeHj6L2uYfWEQ9ffp03bp1Dg4O6OFlMs+A9KTEs/JH6IVcvpre1NRkYWGBSCBjnIBUqyLJi/NRYGDDhg0uLi7oJTSKH36BxJFYenr6559/7uXlNTw8jDuPlhwbCth7eo88kBcJLC0tcbBIFgcBu4KkMZidnb1ixQoPDw/02Ym5R6DnAViSoYGkpKQsWbLE29sbf34JZz8ASR7ze/cg5PLBbCQJLl68KPvKkaIeQjg+Pn7x4sU1a9aEhISgbYSdBQUxBt8E1NWJiQmUcwsA+Pnnn7W0tBgMxt27d/GH4bCCQObC+3Vz5GITNDc329jYYJsAvOGkf1o7H8VbnJ2d1dTUzp49K5bMlyKITVkAJckmOEcZuUu2trZLly61s7O7cuXKixcvpm6M92gZyIUEz58/t7e3R6+YlrKAgCQfEIEkB0VRDx8+PHjwoKqqqoGBQV5eHr4Fl1FwBogn56ZiYxBCODIykpeXt2/fPgMDAz09PTs7u7CwsJycnKqqqp6eHiwC5ZQ2/XbIiwROTk7IJphKAswAlJtFUdTvv/8eHx+/c+dODQ0NJpN54cIFrEE/CDtAClJkhZO/FdPY2Hju3DlPT09DQ0NtbW1tbW1jY2MrK6vo6OiOjg5Kbo9uvgVyMQxfvHhhZ2eXmpoKicNGXAwbgH19fVeuXHF2dtbR0TE0NDx8+PDdu3f7+vrEkyml+LufBOnmgMkpa+QkiESizs7Ox48fFxcXX7hwwd/f39XVFX299QOWBGIibNza2urm5oa9AylJgGZkYmIiMzPTxsaGxWLdu3evu7sbfdAULz++Ucp0AJMxbQHS9iav31QVJE6AyALTArz1rJkcMlkY6wgUCZUSFUKhkMPh8Hg8fCZC3iJlEUs1MXU4M104uUiCV69e7d27Fz+Ghu0j7EAjk7i7u7unp0dK5WNtKrVy+PdpFxUQPvfUeZx2a5KrLrVlyQK4w+SF1HS/afdTRA47WUCqS4DIysGtSFXV1taWmZlZVlZGvhIEEsnQUrXNCHSSABs1LS0tTk5O+GMx2DiS2ovkSKR2htT8AoV3CuQKCOHr169jYmLU1dUtLCwSExNLS0tfvHhBvlqXZNtM65eXYWhpaZmSkkJX5VINUcSRDN6aSLqgH/mTweVyR0dHuVzu2NjY2NgYj8dD1zweb2JiAmWWovc0o2IcDofD4aDXNqMLVAC91Z3D4QwPD6ProaEhfPH69Wt0MTQ0hG58TWBoaKi/v7+/v39oaGhwcLCvr6+3txe91KG7u7urq6urq6unp4fNZre0tLDZ7K6uro6OjtbW1tbW1ra2NjabjXwuFRUVFRWVf/7zn1paWu7u7mlpaY8fPx4bGyMl2UynVC42QXt7u4WFxdq1a0NCQiIiIoKCgoKCgkJCQg4fPhwYGHj06FFfX18/P7+jR48GBAQcOHDA29vby8tr79697u7uDg4OdnZ2jo6OLi4ubm5uLi4uDg4OO3fu3Llzp4ODg5OTk4ODg7W1tZWVlaWlpYWFhaWlpZWVla2trY2NzbZt2ywsLKysrLZt27ZFgq1bt5qamjIYDHNzc3NzcyaTaW5uvmXLlu3bt1taWm7fvt3c3NzExITJZDKZTDMzM1TemACDwTAzM9uyZYuJiQmDwWAymejayMiIwWAYGxsbSbBRAlTS0NBw06ZNmzZtMjIy0tfX19HR2bhxo6mpKeqP/mRs3LiRwWBs2LBBQ0NDR0dHT09PW1tbU1NTR0dHW1t7/fr1Wlpaq1ev/uSTT1QIfPTRR0uWLLGwsLh16xY6pXzPkoCiKPSdFx6Pl5+f7+HhsXv3bnd3dxcXFw8PD3d3dycnp6+//tre3t7W1tbR0dHNzW3//v3ffvutp6enj4+Pt7f3nj173N3d3dzc0L8QM/bu3evp6fntt9/6+Pj4+vru379/37593t7efn5+3t7eqJiPj8+BAwf8/f39/Px8fX0RyQ5LEBgYGBwcHBgYGBAQEBgYGBgYGBoaGh0dHRUVFRwcfOTIEVQmMjIyIiIiNDQ0PDz82LFjAQEB6DokJCQsLCwyMjI8PBy9pikmJiYiIiIsLCw6OjoyMjIyMpLFYqH/hoaGRkREREVFhYaGBgUFRUREnDhx4vjx48HBwSEhIdHR0egBjfj4+Ojo6JMnT8bGxsbFxSUkJJyWIDk5OTk5OT4+Pi4uLikp6cyZM3FxcXFxcRcvXjx27Nhnn32GGfDJJ58sX77c2to6KCiouroaRR7fPwnIJ0nGx8dHR0eROB0dHR0ZGUECFr0mH/3I4/HQwx4TU4BiCSilAIt9oQTYasOY6pLRNTRFADK3HR0d//KXv3z22WempqYsFuvOnTtsNhu9PArO4dvkNJMARQPl4emStuQ8YxZNS92CrTbyeqoRh+0q8hc0mT09PYGBgba2tqdOnaqoqOBwONTkT7iTUeqZDpB+w1DKv5Jy86S8O9JlIj0l/N9pF4CcU6kOkC4caT+SEgJO+U4lEqRwcuIa6cVNO7Ok0wumAE7G1H9JlZcaCG4adYbD4bS0tEh9aYM0xnGd75MEUp17C95S7E2VvKVyefT/zwa5PIY2laGYp3PU1lOboLH/f1rQLAnevjuV21cxIRd1oMSHBSUJlFCSQAklCZQQK0mghFhJAoUGBNRgZVpo4s16+b5KX0mCeQEEFKfynF9YalFrW21G8D6bHTusrKysLC2sdtja2hy/2Tw4XV4hhIDfej+roKrqZsy+XQcu1vRNyKV3ShLMDyCk+h+n+AZl/Pb7wws+PsEnEq/m5t28lX/S5nM1i+AfWyeIqBcEVG8Ry2Grgb6egfEWK7udO/aEnM3+sfLFsFA+ERYlCeQOCCE12tfWPcwXjI5OCCYm6hKddugvW7Z8iVN8RoxHRHZt08jkwDglarviuDchyUNzg2tg7IWci0FOIXmV9S0dg1yRPEKkShLIHRBQnNJ4R5eQ738fFoshAAM/ZZ8Ot9XUXa1lbLrnfC1nyg0U1ZoWfr4w6+Q+fS2tLVtN9b5y8vAyMt3qerZCLgpBSYL5AIRw8OmzvqFXPaNCCkLIef6cBwHoryrKyci8llfZOsInztUAxb8XFn3lwqmfnj+4deNa6ll/5qFb7T1CuXVPSYJ5AgSA/fPNkvonD4suJ7CO/+cEK2SP0adfrTNY87//o3Uot3Hk/wtSvIrEU7caOp89vHDOb5vO9m+dt9sFFDweEIjF8smrUJJgPgAhJWq8cDIht7qruy7OZ7+PuZq+rSdTa2tc2fWT3x48daWsXyLmIaDGfvlPbOHTjrGXv/gbLnXOftp8Nz7iu1sNgxOoKiUJPkBAQHEeJrs7fH3iXsuIiHp9PaWg5d5/rta9Op9U3N6THc4qeILlAARU/y8R4edLno0ACIGQXfzDMTszz1NlvSI5Hr0qSSB3QAgmem8eCM6uLsk/72WjvWLRUnV10607nE+cCrLZEZaQEOJob2rgk9E4IAL80YrcyzdrW8ZGOa8H+np+vbDLyNXvwmmW045NVpG3G9sHBgYGBoR0uwhKEswHIIR8vghOjA60v3rR+upV68uuzo6u0ZF+NntobGywvaP1ecfrCaGIqk87c/d55wTFKWbZMjfoeZ3/pWGID4XDbS3Xgow3bdDW0dHZoB+T30Rv95QkUBxACCmBCIohhEA4PsYdG/t/nwFCyOeN/ffhGQFFr25QkkAJJQmUUJJACbGSBEqIlSRQQqwkgRJiJQmUEIvF/wfil2aMUkpFGQAAAABJRU5ErkJgggA=)
(2)磷元素除了形成植酸外,还可以出现在下列 分子或结构中。
A.核糖 B. ATP C.核糖体 D.核膜
(3)为从根本上解决水稻中的高植酸问题,可将植酸酶基因导入水稻,培育低植酸转基因水稻品种。下图是获取植酸酶基因的流程。
![](https://www.ebk.net.cn/tikuimages/7/2017/600/shoutiniao11/6a09e08195922ccae75498c36db4330b.png)
据图回答:①图中基因组文库 (小于/等于/大于)cDNA文库。
②B过程需要的酶是 ;A,C过程中 (可以/不可以)使用同一种探针筛选含目的基因的菌株。