5.Below is schematic of gene Z, which encodes for protein Z. the promoter is indicated by the dotted box. Transcription begins immediately following the promoter. Promoter Terminator Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 1 100 1100 2100 3100 4100 5100 Position 200= start codon Position 4800 = stop codon 5a. The primary transcript produced by this gene would be approximately how many nucleotides long? 5b. Two different mRNA transcripts are produced from this gene. One is approximately 2000 nucleotides long, while the other is approximately 3000 nucleotides long. Explain how two different transcripts can be produced from this gene. 5c. Assume each transcript produces a protein. Given your answer above and the diagram, what is the approximate size (number of amino acids) of the two proteins produced from this gene? 5' 3'

5.Below is schematic of gene Z, which encodes for protein Z. the promoter is indicated by the dotted box. Transcription begins immediately following the promoter. Promoter Terminator Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 1 100 1100 2100 3100 4100 5100 Position 200= start codon Position 4800 = stop codon 5a. The primary transcript produced by this gene would be approximately how many nucleotides long? 5b. Two different mRNA transcripts are produced from this gene. One is approximately 2000 nucleotides long, while the other is approximately 3000 nucleotides long. Explain how two different transcripts can be produced from this gene. 5c. Assume each transcript produces a protein. Given your answer above and the diagram, what is the approximate size (number of amino acids) of the two proteins produced from this gene? 5' 3'

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

Chapter16: Regulation Of Gene Expression

Section: Chapter Questions

Problem 6TYK

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A binding .site for RNA polymerase is called a ___ . a. gene b. promoter c. codon d. protein
A part of an mRNA molecule with the sequence 5-UGC GCA-3 is being translated by a ribosome. The following activated tRNA molecules are available. tRNA Anticodon Amino Acid 3-GGC-5 Proline 3-CGU-5 Alanine 3-UGC-5 Treonine 3-CCG-5 Glycine 3-ACG-5 Cysteine 3-CGC-5 Alanine Which two of them can bind correctly to the mRNA so that a dipeptide can form? a. cysteinealanine b. prolinecysteine c. glycinecysteine d. alaninealanine e. threonineglycine
Which of the following statements is false? a. GTP is an energy source during various stages of translation. b. In the ribosome, peptidyl transferase catalyzes peptide bondformation between amino acids. c. When the mRNA code UAA reaches the ribosome, there isno tRNA to bind to it. d. A long polypeptide is cut off the tRNA in the A site so its Metamino acid links to the amino acid in the P site. e. Forty-two amino acids of a protein are encoded by 126nucleotides of the mRNA.
1. Which of the following conditions will result to deactivation of a gene? a. histone methylation b. phosphorylation of a transcription factor c. binding of hormones to its nuclear receptor d. deactivation of transcription factor inhibitory protein 2. Direct complementarity of the microRNA to the target mRNA will lead to a. mRNA degradation b. inhibition of transcription c. chromatin remodeling d. inhibition of translation
1.A portion of an mRNA attached to a ribosome reads: 5′ GACAUGAACAGC 3′ If a tRNA with a methionine amino acid attached is in the P site of the ribosome, a tRNA with which amino acid attached will enter the A site? Group of answer choices a. Glutamic Acid b. Lysine c. Threonine d. Asparagine 2. Active transcription does not occur in regions of chromatin loops that are located ________. Group of answer choices a. A large distance away from the MARS b. Within the euchromatin c. Near the MARS d. A large distance from the telomere 3. Given the DNA sequence 5′-AUG GCU AGA GUU GAA AAA-3′, which of these sequences represents a silent mutation? Group of answer choices a. 5′-AUG GUU AGA GUU GAA AAA-3′ b. 5′-AUG GCU UGA GUU GAA AAA-3′ c. 5′-AUG GCU AGA GUU GGA AAA-3′ d. 5′-AUG GCU CGA GUU GAA AAA-3′
1. Classify the type of mutation that have taken place: silent, missense and nonsense as a result of a single base substitution from UCG codon which codes for cysteine:a) AGC (ser): ________b) UGU (cys): ________c) GGC (gly): _______d) UGA (stop): _______e) UUC (phen): _______2. A single base addition and a single base deletion approximately 15 bases apart in the mRNA specifying the protein lysozyme from the bacterial virus T4 caused a change in the protein fromits wil-type composition….lys-ser-pro-ser-leu-asn-ala-ala-lys…..to the mutant form lys-val-his-his-leu-met-ala-alalys.a. Decipher the segment of mRNA for both the original protein and the double mutant.b. Which base was added? Which was deleted?3. Given is the 30 nucleotides in the human gene for hemoglobin (the oxygen-carrying protein in the red blood cells): 5’ TAC-CAC-GTG-GAC-TGA-GGA-CTC-CTC-TTC-AGA 3’a. What is the complementary strand?b. Deduce the mRNA in this coding region.c. What is the amino acid sequence based on this…
1. (a)How many amino acids are found in the polypeptide when the mRNA is translated? mRNA 5 - AAUAUGCGGAUGCCCGAA -3 4 5 6 7 (b) "In this mutation, the UGG codon is replaced with UGA." missense mutation nonsense mutation silent mutation frameshift mutation
1) Which of the following complexes contributes to the transcription of cyclin E? a) Cdk1/cyclin A b) Cdk2/cyclin B c) Cdk3/cyclin C d) Cdk4/cyclin D 2. DNA Polymerase δ (delta) has the following functions EXCEPT a) proof-read the new DNA strand. b) detach the dangling RNA primer. c) nip the RNA primer during termination. d) add DNA nucleotides to the lagging strand.
1. Which is the correct of mRNA strand if you have a tRNA of GCA-AUG-UCC-CGU? A. 5’-CGU-UAC-AGG-CCA-3’ B. 3’-CGU-UAC-AGG-CCA-5’ C. 5’-CGT-TAC-TGG-GCA-3’ D. 3’-CGT-TAC-TGG-GCA-5’ 2. Which is the correct amino acids using the mRNA strand of 5’-AUG-CAU-CAA-3’? A. MET-HIS-GLN B. GLN-HIS-MET C. MET-GLN-HIS D. HIS-MET-GLN
1. What term is referred to the process of removing large portions of the RNA primary transcript molecules and reconnecting the remaining portions? A. Exon splicing B. UTR splicing C. Intron splicing D. RNA splicing 2. Which of the following does not involved in the proofreading and repair of DNA? A. Isomerase B. Ligase C. DNA Polymerase I D. Nuclease
1. Considering the following nucleotide sequence in an mRNA molecule: 5’ AUG UUA CGU AAU GCU GUC GAA UCU AUU UGC UUU ACA UAA 3' a) Write the sequence of the DNA template (antisense) strand from which the mRNA was synthesized. b) Write the sequence of the DNA coding (sense or informational) strand complementary to the template strand. c) Write the sequence of tRNA anticodon that corresponds to the given mRNA molecule. d) Write the amino acid sequence of the peptide synthesized from the given mRNA nucleotide sequence. e) Draw the structure of the pertide fragment made up of the first five (5) amino acids in the given polypeptide.
1. Which of the following explains why prokaryotes have a bigger gene-to-genome size ratio compared to eukaryotes? A. Prokaryotic genome contains multiple promoters and repressors that control of a single gene.B. Prokaryotic genome is completely devoid of non-coding sequences.C. Prokaryotic genome contains multiple genes that are under the control of a common promoterand repressor.D. Prokaryotic genome contains one promoter region for each gene. 2. Which of the following can explain why eukaryotes have smaller gene-to-genome size ratio compared to prokaryotes?A. Genome size do not correlate with complexity in eukaryotes.B. The percentage of genes is inversely correlated with genome size in eukaryotes.C. Eukaryotic genome contains a lot of coding sequences.D. Eukaryotic genome contains a lot of non-coding sequences.