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Unformatted text preview: Take- Home Test for Chapters 17- 21 Name______________________________________ Honor Code: I understand that I may use my textbook and the internet as resources for this test, but under no circumstances may I work with anyone else on this test. I agree that if I have questions or concerns about this test, I will address them to Mrs. Hunt only. Signed: _______________________________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A particular triplet of bases in the template strand of DNA is 5' AGT 3'. The corresponding codon for the mRNA transcribed is 1) A) 3' UGA 5'. B) 3'ACU 5'. C) 5' TCA 3'. D) 3' UCA 5'. E) either UCA or TCA, depending on wobble in the first base. 2) Which of the following nucleotide triplets best represents a codon? 2) A) a triplet separated spatially from other triplets B) a sequence in tRNA at the 3' end C) a triplet that has no corresponding amino acid D) a triplet at the opposite end of tRNA from the attachment site of the amino acid E) a triplet in the same reading frame as an upstream AUG 3) In eukaryotes there are several different types of RNA polymerase. Which type is involved in transcription of mRNA for a globin protein? 3) A) RNA polymerase II B) primase C) RNA polymerase III D) RNA polymerase I E) ligase 4) Which of these is the function of a poly (A) signal sequence? 4) A) It is a sequence that codes for the hydrolysis of the RNA polymerase. B) It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~ 10—35 nucleotides away. C) It adds the poly (A) tail to the 3' end of the mRNA. D) It adds a 7- methylguanosine cap to the 3' end of the mRNA. E) It allows the 3' end of the mRNA to attach to the ribosome. 5) A part of the promoter, called the TATA box, is said to be highly conserved in evolution. Which might this illustrate? 5) A) The sequence does not mutate. B) The sequence is found in many but not all promoters. C) Any mutation in the sequence is selected against. D) The sequence evolves very rapidly. E) The sequence is transcribed at the start of every gene. 1 The following questions refer to Figure 17.2, a table of codons. Figure 17.2 6) A peptide has the sequence NH 2- phe- pro- lys- gly- phe- pro- COOH . Which of the following sequences in the coding strand of the DNA could code for this peptide? 6) A) 3' AUG- AAA- GGG- TTT- CCC- AAA- GGG B) 5' ACT- TAC- CAT- AAA- CAT- TAC- UGA C) 5' TTT- CCC- AAA- GGG- TTT- CCC D) 5' GGG- AAA- TTT- AAA- CCC- ACT- GGG E) 3' UUU- CCC- AAA- GGG- UUU- CCC 7) A possible sequence of nucleotides in the template strand of DNA that would code for the polypeptide sequence phe- leu- ile- val would be 7) A) 3' AAA- AAT- ATA- ACA 5'....
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- Spring '10