生物化学练习题——蛋白质生物合成（Biochemical exercises -- protein biosynthesis）.doc

生物化学练习题——蛋白质生物合成（Biochemical exercises -- protein biosynthesis） Biochemistry exercises -- protein biosynthesis (radio questions) 1. eukaryotic biogenesis in protein biosynthesis, tRNA is A. leucine TrnA B. alanine tRNA C. lysine tRNA D. fmet tRNA E. methionine tRNA 2. the energy required for peptide chain extension in prokaryotic protein biosynthesis derives from A.ATP B.GTP C.GDP D.UTP E.CTP 3. mammalian ribosome sedimentation constant subunit is A.40S B.70S C.30S D.80S E.60S 4. which of the following is true about the amino acid code? A. consists of three nucleotides adjacent to the DNA chain B. consists of three nucleotides adjacent to the tRNA chain C. consists of three nucleotides adjacent to the mRNA chain D. consists of three nucleotides adjacent to the rRNA chain E. consists of three amino acids adjacent to the polypeptide chain 5.mRNA, as a template for protein synthesis, is essentially due to A. contains nucleotides B. metabolism is fast C. content is little D. is transcribed by DNA E. contains codons 6. protein biosynthesis process is characterized by Reverse reaction of A. protein hydrolysis The chemical reaction of B. peptide synthesis Reverse transmission of C. genetic information Synthesis of polypeptide chains with mRNA as template on D. protein Spontaneous reaction of E. amino acids 7., about mRNA, the wrong description is A. a mRNA molecule can only guide the formation of a polypeptide chain B.mRNA is produced by transcription C.mRNA binds to the nucleus protein to make a difference D.mRNA is easy to degrade E. a tRNA molecule can only guide the production of a polypeptide chain 8., the anti codon means Genetic information in A.DNA Some parts of B.tRNA C.mRNA except for the other part of a cipher Some parts of D.rRNA The corresponding amino acid of the E. codon The corresponding codon of the 9. password GGC is A.GCC B.CCG C.CCC D.CGC E.GGC 10. substances that transport amino acids in protein biosynthesis are A.mRNA B.rRNA C.hnRNA D.DNA E.tRNA 11. w