第16题: [简答题]EGTA chelates(螯合) Ca2+ with high affinity and specificity. How would microinjection(微注射) of EGTA affect glucagon-triggered breakdown of glycogen (糖原) in liver 参考答案:
EGTA螯合CaB+ 将会干扰以CaB+ 作为第二信使的信号传导途径。肝细胞中胰高血糖素诱导的糖原分解要经由cAMP途径, 因此不会影响EGTA的作用。
第17题: [单项选择]Passage One Questions 26 to 28 are based on the passage you have just heard.[A] Fishing and hunting. [C] Nuclear science. [B] He began to show great interest in natural beauty. [D] Amateur radio. 参考答案:D 答案解析:[听力原文] What hobby did Henry take up after his retirement
信息明示题。文章第二段指出,…being an amateur
第18题: [单项选择]联合国开发计划署把新能源分为:() A. 传统能源之外的各种能源形式 B. 水能、太阳能、风能、地热能 C. 大中型水电、新可再生能源、传统生物质能 D. 小水电、太阳能、风能、现代生物质能、地热能 参考答案:C 答案解析: