The diagram shows part of a pre-mRNA molecule. A G part X (a) (i) Name the two substances that make up part X. (ii) Give the sequence of bases on the DNA strand from which this pre-mRNA has been transcribed. (b) (i) Give one way in which the structure of an MRNA molecule is different from the structure of a tRNA molecule. (ii) Explain the difference between pre-mRNA and mRNA. (c) The table shows the percentage of different bases in two pre-mRNA molecules. The molecules were transcribed from the DNA in different parts of a chromosome. Part of Percentage of base chromosome A G U Middle 38 20 24 End 31 22 26

The diagram shows part of a pre-mRNA molecule. A G part X (a) (i) Name the two substances that make up part X. (ii) Give the sequence of bases on the DNA strand from which this pre-mRNA has been transcribed. (b) (i) Give one way in which the structure of an MRNA molecule is different from the structure of a tRNA molecule. (ii) Explain the difference between pre-mRNA and mRNA. (c) The table shows the percentage of different bases in two pre-mRNA molecules. The molecules were transcribed from the DNA in different parts of a chromosome. Part of Percentage of base chromosome A G U Middle 38 20 24 End 31 22 26

Name: The diagram shows part of a pre-mRNA molecule.AGpart X(a) (i) Name th
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Description: The diagram shows part of a pre-mRNA molecule.AGpart X(a) (i) Name the two substances that make up part X.(ii) Give the sequence of bases on the DNA strand from which thispre-mRNA has been transcribed.(b) (i) Give one way in which the structure of a

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter15: From Dna To Protein

Section: Chapter Questions

Problem 12TYK: Discuss Concepts The normal form of a gene contains the nucleotide sequence: When this gene is...

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1. If the gene above is transcribed into a functional mRNA,a.) how many codons will be carried by the functional mRNA?b.) what is the sequence of the 25th codon?c.) what is the sequence of the stop codon?2. If the mRNA transcribed for this gene will be translated into a functional protein,a.) how many amino acids will be used to build the polypeptide chain?b.) what is the amino acid coded by the 25th codon?c.) what is the amino acid coded by the last codon?
1. Using the genetic code, determine the sequence of amino acids encoded by the mRNA codocn sequence 5' GCC-AUG-GUA-AAA-UGC-GAC-CCC 3' 2. Using the genetic code, determine the sequence of amino acids encoded by the mRNA codocn sequence 5' CAU-CCU-CAC-ACU-GUU-UGU-UGG 3'
3’ G G A U A C G U C A C C G G U A U A A G G U U U C G U A U C G 5’ If the RNA synthesized above is a functional mRNA and all the nucleotides belong to an exon, a. how many codons are present in this mRNA? b. how many codons actually code for a protein in this mRNA? c. what stop codon is present in this mRNA?
Give typing answer with explanation and conclusion to all parts Consider the following DNA mRNA sequence: 5’-ACTGATCCATGCCAGGGGTTTTCAACTAAAATGAAA-3’ a) What is the template sequence this mRNA was transcribed from? Include 5’ and 3’ labels. b) Based on this sequence, what you predict would be the resulting peptide sequence from it. c) In examining this sequence what is the proper reading frame of the open reading frame? (+1, +2, +3, -1, -2, or -3). d) What would you predict the peptide sequence to be if there was the following mutation that led to a base change: 5’-ACTGATGCATGCCAGGGGTTTTCAACTAAAATGAAA-3’
AGGTATCGCAT is a sequence from the coding strand of a gene. What will bw the corresponding sequence of the transcribed Mrna?
How many amino acids will the mRNA sequence "AUG GAC CUG UCG UGA" produce?
If a strand of mRNA contains the sequence, UAG CUA UCA AAU AGA, what tRNA anticodons would be needed to translate the sequence?
What is the total size of the mature i.e. fully processed mRNA in nucleotides? How many amino acids would the encoded protein be? Assume that the N- terminal Met encoded by the AUG start codon, is NOT cleaved from the protein?
(a) Write the sequence of the mRNA molecule synthesized from a DNA template strand having the following sequence:5'–ATCGTACCGTTA–3' (b) What amino acid sequence is encoded by the following base sequence of an mRNA molecule? Assume that the reading frame starts at the 5’ end.5'–UUGCCUAGUGAUUGGAUG–3! (c) What is the sequence of the polypeptide formed on addition of poly(UUAC) to a cell-free proteinsynthesizing system?
If the mRNA produced had the sequence ACGCGU, What would be the tRNA anticodon sequence?
The mRNA formed from the repeating tetranucleotide UUACincorporates only three amino acids, but the use of UAUC incorporates four amino acids. Why?
UAA is a stop codon. Why does the UAA sequence in the segment of mRNA 5′-G-C-A-U-G-G-A-C-C-C-C-G-U-U-A-U-U-A-A-A-C-A-C-3′not cause protein synthesis to stop?