. What mRNA base sequence would be obtained from the following portion of a gene?
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- The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? complementarity nonsense codons universality degeneracyWhich 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.How many nucleotides are in 12 mRNA codons? 12 24 36 43
- A binding .site for RNA polymerase is called a ___ . a. gene b. promoter c. codon d. proteinA scientist identifies a pre-mRNA with the following structure. What is the predicted size of the corresponding mature mRNA in base pairs (bp), excluding the 5' cap and 3’ poly-A tail? 220bp 295bp 140bp 435bp1. What amino acids are specified by the following base triads on DNA?a. TCAb. CCtc. GGC d. GATe. TTA 2. What amino acids are specified by each of the following codons on an mRNA molecule? a. CAU b. UCC c. AGA d. GCG e. AAA
- 7. Although DNA gets all the glory, it’s actually RNA that does most of the work when cells produce proteins. Explain how RNA is involved in gene expression (i.e., in transcription and translation).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.5)Which type of nucleic acid would have the sequence "ACCGAUUG"? a)DNA b)mRNA c)Another type of nucleic acid d)More information is needed
- 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 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. Asparagine1. Identify the name of the correct amino acid that corresponds to the correct tRNA codon and mRNA codon. State the process used to convert to mRNA and tRNA.
