基因工程与蛋白质工程的区别（ ）
- A.基因工程合成的是天然的蛋白质，蛋白质工程合成的不一定是天然存在的蛋白质
- B.基因工程需对基因进行分子水平操作，蛋白质工程不对基因进行操作
- C.基因工程是分子水平操作，蛋白质工程是细胞水平(或形状水平)
- D.基因工程完全不同于蛋白质工程
正确答案及解析
正确答案
解析
蛋白质工程又称为第二代基因工程，它和基因工程的操作对象都是基因，都属于分子水平的操作；基因工程只是对基因进行切割和拼接，合成的仍然是天然存在的蛋白质，蛋白质工程的本质是改造基因，合成的可以是自然界不存在的蛋白质。
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