AS Quiz07 2007-2 CH385

AS Quiz07 2007-2 CH385 - Name _________________________...

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CH385 Introduction to Cell Biology Name _________________________ Quiz #6 (30 points) AY 2007-2 MULTIPLE CHOICE: 1. (4 pts) Which of the following is NOT a difference between RNA and DNA? a. Nucleotides are connected via phosphodiester bonds. b. RNA has ribose whereas DNA has deoxyribose. c. RNA is single stranded whereas DNA is double stranded. d. Thymine is replaced by uracil in RNA. 2. (4 pts) RNA synthesis requires a. a helicase to open the DNA strands. b. DNA nucleotides. c. a DNA template. d. a primase. 3. (4 pts) Which of the following components of RNA polymerase recognizes the promoter to start RNA synthesis? a. α (alpha) subunit b. β (beta) subunit. c. β’ (beta-prime) subunit. d. σ (sigma) subunit. 4. (4 pts) Codons can be found on the a. rRNA. b. mRNA. c. tRNA. d. snRNA. 5. (4 points) Which of the following are NOT required for protein synthesis? a. initiation factors b. elongation factors c. termination factors d. elimination factors
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CH385 Introduction to Cell Biology
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Unformatted text preview: Name _________________________ Quiz #6 (30 points) AY 2007-2 6. (3 pts) During protein synthesis, the tRNA with the growing polypeptide (protein) chain is found at the ___ site of the ribosome. a. P b. T c. E d. none of the above 7. (3 pts) During translation, the appropriate amino acid is determined by: a. binding of amino acids to the rRNA. b. base-pairing between the template DNA strand and the mRNA strand. c. binding of rRNA with mRNA. d. base-pairing between the three nucleotides of the codon and the three nucleotides of the anticodon. Extra credit (3 points) After translation is completed, the ribosome: a. stays intact and finds another AUG codon to begin translation. b. moves back to the first AUG codon of the mRNA to begin again. c. joins with other ribosomes to continue translation. d. breaks into small and large ribosomal subunits. e. will remain bound to the mRNA....
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AS Quiz07 2007-2 CH385 - Name _________________________...

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