20. Biofuels are mainly produced by ______.
(A) plants that convert hemicellulose into gasoline
(B) plants that are easy to grow in arid environments
(C) transgenic crops that have cell walls containing ethylene
(D) the genetic engineering of ethanol-generating genes into plants
(E) the breakdown of cell wall biopolymers into sugars that can be fermented

答案：登入後查看
統計： A(13), B(4), C(1), D(4), E(46) #2052871

詳解 (共 2 筆)

#3735979

利用酵素將細胞壁內的bioploymers(如cellulose, hemicellulose)分解為sugars再經發酵成酒精，再蒸餾為biofuels.

8
0
#5235774

31. Biofuels are mainly produced by: 
(A) plants that convert hemicellulose into gasoline. 
(B) the breakdown of cell wall biopolymers into sugars that can be fermented. 
(C) the genetic engineering of ethanol generating genes into plants. 
(D) plants that are easy to grow in arid environments. 

0
0