B1 Q3 MP - Q3 Mastery Packet Name_ IB Bio I 1011 1) RNA...

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Q3 Mastery Packet Name___________________________________ IB Bio I 1011 1) RNA differs from DNA in that RNA A) contains uracil instead of thymine. B) is found only in cytoplasm. C) contains ribose as its sugar. D) Both A and C are correct. 2) What organisms use the genetic code? A) all organisms B) eukaryotes only C) prokaryotes only D) most prokaryotes and most eukaryotes 3) A prokaryotic gene 600 nucleotides long can code for a polypeptide chain of about how many amino acids? A) 200 B) 300 C) 100 D) 600 4) A portion of the genetic code is UUU = phenylalanine, GCC = alanine, AAA = lysine, and CCC = proline. Assume the correct code places the amino acids phenylalanine, alanine, and lysine in a protein (in that order). Which of the following DNA sequences would substitute proline for alanine? A) AAA - CCG - TTT B) AAA - CCC - TTT C) AAT - CGG - TTT D) AAA - GGG - TTT E) AAA - CGG - TTA 5) Which of the following is not true of a codon? A) It extends from one end of a tRNA molecule. B) It never codes for more than one amino acid. C) It is the basic unit of the genetic code. D) It consists of three nucleotides. E) It may code for the same amino acid as another codon does. 6) A mRNA molecule makes a protein containing 120 amino acids. The mRNA consisted of at least how many codons? A) 30 B) 40 C) 480 D) 120 E) 360 7) In order for a gene to be transcribed, RNA polymerase must have access to the DNA helix and be able to bind to the genes A) repressor B) terminator C) promoter D) regulator 8) Transcription of the DNA sequence AAGTTC will produce RNA with the sequence A) AAGTTC. B) TTGUUC. C) AAGUUC. D) UUCAAG. E) TTCAAG. 9) What process occurs in the nucleus? A) Photosynthesis B) Protein synthesis C) Respiration D) Transcription E) Translation 10) When RNA is being made, the RNA base _____ always pairs with the base ______ in DNA. A) U … A B) U … T C) T … A D) T … G E) A … U 1
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11) RNA polymerase A) Is the protein responsible for the production of ribonucleotides. B) Is a ribozyme composed on snRNPs. C) Is the enzyme that transcribes exons, but does not transcribe introns. D) Is the enzyme that breaks hydrogen bonds between nucleotides on the DNA template strand and their complementary RNA nucleotides. E) Begins transcription at a promoter sequence and moves along the template strand of DNA in a 5' to 3' direction. 12) Where is tRNA made? A) Ribosomes B) Nucleus C) Cytoplasm D) Nucleolus 13) What amino acid sequence will be generated, based on the following mRNA codon sequence? 5'AUG-UCU-UCG-UUA-UCC-UUG A) met - ser - ser - leu - ser - leu B) met - ser - leu - ser - leu - ser C) met - arg - glu - arg - glu - arg D) met - leu - phe - arg - glu - glu E) met - glu - arg - arg - gln - leu 2
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14) A possible sequence of nucleotides in DNA that would code for the polypeptide sequence phe-leu-ile-val would be A) 3' AAA - GAA - TAA - CAA 5'. B) 3' AAC
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B1 Q3 MP - Q3 Mastery Packet Name_ IB Bio I 1011 1) RNA...

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