酶的辅酶与辅基的生理功用主要是运载氢原子或电子，参与氧化还原反应，运载反应基团，如酰基、氨基、烷基、羧基及一碳单位等，参与基团转移。大部分的辅酶与辅基衍生于维生素。它们是复合酶的活性中心的组成部分。 ()
查看答案
听力原文：How can I get to the Friendship Hotel？
(7)
A. Where are you？
B. Take Bus No.18.
Can I help you？
听力原文：M: I'd like to have a plane ticket to Paris.
W: May I see your ID card please？
Q: What is the mail doing？
(21)
A. Buying an air ticket.
B. Looking for his ID card.
Checking in at the airport.
The girls didn't like Jo any more after his mother died.
A. Right.
B. Wrong.
C. Doesn't say.
磷酸化与脱磷酸化是原核生物中酶的共价修饰的主要方式。 ()
A. 正确
B. 错误
微信支付 
支付宝支付