Bio188 Exam 2

A mrna transcript has the following base sequence 3

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Unformatted text preview: RNA transcript has the following base sequence: 3'-UCC-AGU-CGU-UAU-UAGGUA-GUU-5'. What is the amino acid composition of the resulting protein? The genetic code is given below. UUU = phe UUC = phe UUA ~ leu UUG ~ leu CUU = leu CUC = leu CUA ~ leu CUG ~ leu AUU = ile AUC ~ He AUA ~ lie AUG ~ met GUU = VIII GUC ~ VIII GUA = VIII GUG = VIII A) ® C) D) E) UCU ~ ser UCC ~ ser UCA ~ ser UCG = ser CCU ~ pro CCC ~ pro CCA ~ pro CCG = ro ACU ~ thr ACC ~ thr ACA ~ thr ACG ~ thr GCU = ala GCC = ala GCA = ala GCG ~ ala UAU ~ tyr tyr UM= 510p UAG ~ 510 CAU ~ his CAC~ his CAA~ gin CAG= In MU~ asn MC~ asn UAC~ AAA~ lyo; MG~I GAU = asp GAC= asp GM= glu GAG~ lu Leu-Met-Asp-Tyr-Cys-Pro Met-Asp-Tyr-Cys Met-Asp-Tyr-Cys-Pro Ser-Ser-Arg-Tyr Ser-Ser-Arg-Tyr-Val Page 4 UGU = CJ5 UGC= CJ5 UGA ~ 510p UGG ~ tr . CGU = arg CGC = arg CGA= arg CGG ~ ar AGU ~ ser AGC=ser AGA~ arg AGG= ar GGU~ gly GGC~ gly GGA~ gly GGG~ I 21. The G protein is located A) in outside the cell B) in the cytoplasm C) in nuclear membrane D) in endoplasmic reticulum @ in the plasma membrane 22. The "central dogma" of molecular biology states that A) information flow between DNA, RNA, and protein is reversible. . B) information flow in the cell is unidirectional, from protein to RNA to DNA. information flow in the cell is unidirectional, from DNA to RNA to protein. D) the DNA sequence of a gene can be predicted if we know the amino acid sequence of the protein it encodes. E) the genetic code is ambiguous but not degenerate. © 23. A mRNA transcript has the following base sequence: 3'-UGCUACA-5'. What is the DNA code for this sequence? A) 5'-UGUAGCA-3' @J 3'-TGTAGCA-5' C) 5'-TGTAGCA-3' D) 3'-UGUAGCA-5' 5'-ACGATGT-3' ® 24. Splice...
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