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3 、The effect is so great that researchers from the Universityof Bristol said those children with a “healthier”diet mayget an IQ boost.

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翻译:1、Children brought up on healthy diets are more intelligentcompared with their junk food eating counterparts,newresearch suggests.

Meselson和Stahl利用14N及15N标记大肠杆菌的实验证明的反应机理是

A. DNA能被复制
B. DNA可转录为mRNA
C. DNA可表达为蛋白质
DNA的半保留复制
E. DNA的全保留复制

合成DNA的原料是

A. dAMP,dGMP,dCMP,dTMP
B. dATP,dGTP,dCTP,dTTP
C. dADP,dGDP,dCDP,dTDP
D. ATP,GTP,CTP,UPT
E. AMP,GMP,CMP,UMP

DNA复制时,以序列5¢-TpApGpAp 3¢-为模板将合成的互补结构是

A. 5¢-pTpCpTpA-3¢
B. 5¢-pApTpCpT-3¢
C. 5¢-pUpCpUpA-3¢
D. 5¢-pGpCpGpA-3¢
E. 3¢-pTpCpTpA-5¢

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