Question 13 0.5 pts **Refer to the "Protein Synthesis: Transcription and Translation" videos to answer the question** According to Video 2 about protein synthesis, how many nucleotides on transfer RNA (tRNA) must match the nucleotides on messenger RNA (mRNA) in order to deliver the amino acid to the ribosome? Question 14
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Step 1: The question asks how many nucleotides on tRNA must match the nucleotides on mRNA to deliver the amino acid to the ribosome. Show more…
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Which of the following features is common to both DNA replication and transcription? Nucleotides are added to the 5' end of the newly synthesized strand. A sugar-phosphate bond is formed between the 3' hydroxyl and the 5' phosphate. Deoxyribonucleotides are incorporated into the growing sequence. Both RNA and DNA polymerases require oligonucleotide priming. QUESTION 13 Mutations that occur in the promoter sequence of a gene might do any of the following except: Decrease RNA polymerase binding to the template. Increase RNA polymerase binding to the template. Make a mutant RNA polymerase. Cause more transcription to occur. Cause a new phenotype. QUESTION 14 Exons within primary eukaryotic transcripts: Are joined to form mature mRNA. Contain promoter sequences. Often function as introns in other genes. Are short fragments produced during replication. Are removed during specialized transformation. QUESTION 15 In the polypeptide Met-Leu-Val-Asn, which amino acid has a free carboxyl group? Met Leu Val Asn Both Met and Asn. QUESTION 16 The anticodon used in the initiation of translation is: 3' - A - U - G - 5' 5' – C - A - U- 3' 5' - A - U - G - 3' 3' - M - E - T - 5' QUESTION 17 How many nucleotides would be expected for a gene coding for a protein with 300 amino acids? 300 100 600 1200 900
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Question 6: (1 mark) An mRNA has the following codon: 5' GCA 3'. What tRNA anticodon will bind to this codon? The tRNA anticodon 5' 3' will bind to the mRNA codon 5' GCA 3'. **Please enter your sequence in the 5' to 3' direction. Deductions will be made if a sequence is inputted in the wrong direction.** Question 7: (1 mark) A tRNA anticodon has the following sequence: 3' CUA 5'. What amino acid does it carry? The amino acid carried on a tRNA with the anticodon 3' CUA 5' is . **Hint: You will need to consult the genetic code to answer this question. And watch your 5' to 3' direction.** Questions 8 to 13 are based on the following information. Question 8: The top strand of the following segment of DNA serves as the template strand: 3' TACACCTTGGCGACGACT 5' 5' ATGTGGAACCGCTGCTGA 3' We will refer to this segment of DNA as the original (or unmutated) sequence. Please answer the following questions: (a) What is the mRNA sequence? The mRNA sequence is 5' ATGTGGAACCGCTGCTGA 3'. (2 marks) **Please enter your sequence in the 5' to 3' direction. Deductions will be made if a sequence is inputted in the wrong direction.** (b) Using the mRNA sequence you determined in part (a) of this question, give the sequence of the protein that would be translated. The amino acid sequence for this protein is N-terminus C-terminus. (2 marks) **Please note** The N-terminus refers to the beginning of the primary sequence for a protein, and the C-terminus refers to the end of the primary sequence for a protein. i.e. input the amino acids in the order that they would be translated. If a codon encodes for a stop codon, type STOP. When inputting your sequence, separate each amino acid with a hyphen (e.g. Ser-Tyr-STOP). You will need to consult the genetic code to answer this question. Questions 9 to 13 are in reference to the DNA sequence shown in Question 8. Question 9: The original (unmutated) DNA sequence (shown above in Question 8) has been mutated to the following (this represents the template strand): 3' TACATCTTGGCGACGACT 5'. We will refer to this sequence as mutation #1. Please note that for simplicity only the template strand for this mutated segment of DNA is shown. Answer the following questions: (a) What is the complete mRNA sequence for the mutated segment mutation #1? The mutated mRNA sequence is 5' AUGACGAACCGCUGCUCA 3'. (2 marks) **Please enter your sequence in the 5' to 3' direction. Deductions will be made if a sequence is inputted in the wrong direction.** (b) Using the mRNA sequence you determined in part (a) of this question, give the sequence of the protein that would be translated. The amino acid sequence for this protein is N-terminus C-terminus. (2 marks) **Please note** The N-terminus refers to the beginning of the primary sequence for a protein, and the C-terminus refers to the end of the primary sequence for a protein. i.e. input the amino acids in the order that they would be translated. If a codon encodes for a stop codon, type STOP. When inputting your sequence, separate each amino acid with a hyphen (e.g. Ser-Tyr-STOP). You will need to consult the genetic code to answer this question.
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