Choose whether the statement is TRUE or FALSE "There are no aminoacyl-tRNAs that will go to the A site of the ribosome when UGA is the codon."
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Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
Choose whether the statement is TRUE or FALSE
"There are no aminoacyl-tRNAs that will go to the A site of the ribosome when UGA is the codon."
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Solved in 3 steps
- There are no aminoacyl-tRNAs that will go to the A site of the ribosome when UGA is the codon. Is this true of false?Refer to the information on the genetic code. Use this information to determine how many amino acids are coded for by the mRNA sequence AUGCGCAGUCGGUAG. The genetic code Second letter of codon UAU UAC JUU Phenylalanine uCU UUC Phe) UUA Leucine (Leu) UUG Tyrosine (Tyr) GCysteine (Cys) UGC 1oStop codon |UGG Tryptophan (Trp) CGU CGC UcC Serine (Ser) UCA ucc CCU cC Proline (Pro) Stop codon UAG Stop codon CAU Histidine His) CU CUC CUA CUG Arginine (Arg) Leucine (Leu) cca CAA CCA CGA Glutamine (Gin) CAG AUU AUC AUA ACU Isoleucine (le) AAU AAC AGU AGC Asparagine (Asn) Serine (Ser) ACC Threonine (Thr) ACA Methicnine ACC start codon GCU Lysine (Lys) AGA Arginine (Arg) ARC AGS GAU Aspartic acid (Asp)G0 GAC GUU GUC Valine (Val) GCC Alanine (Ab) GG Glycine (Gly GUA GUG GCA GCG GA Glutamic acid (Glu) GA GGG GAG 4 15 First letter of codon Third letter of codonIndicate the amino acid sequence of the protein encoded by the following mRNA molecule. Use the genetic code table and assume that the very first “AUG” the ribosome encounters will serve as the start codon and specify methionine. 5’-AAUUCAUGCCCAAAUUUGGGGCACGAAGCUUCUUAGGCUAGUCCUAAAAAA-3’
- TRNAS are 'charged' or activated by aminoacyl TRNA synthetases. Select the correct statements regarding this process. The process is dependent on interactions between ribosomes and aminoacyl TRNA synthetases. The aminoacid is added to the D-loop of the tRNA. Aminoacyl TRNA synthetases are pre-associated with tRNAS. The amino acid is attached to the terminal to the 3' hydroxyl of an adenine in the acceptor arm. The process requires an aminoacyl-adenylate intermadiate. QUESTION 19 Select the correct statements regarding myosin-mediated contraction the sarcomere. O Ca2+ is required for the binding of myosin to f-actin. Myosin and f-actin are randomly distributed in the sarcomere. Physical pulling of the actin microfilament requires three distinct conformation changes on myosin that involve ATP binding, ATP hydrolysis and sequential release of inorganic phosphate and ADP. Myosin-mediated contracted is ubiquitous across all cell types. O O O ODystrophin is mutated in the disease, causing a codon to change from GGA to UGA. What is the consequence of this change? (Label the following regions on this tRNA molecule, stating the function of each:
- The amino acid glycine is encoded by four codons: GGA, GGC, GGG, and GGU. Which of the following statements correctly explains this fact? The glycine anticodon contains the sequence CC, but the 5' base of the anticodon can pair nonspecifically with the 3' base of the codon. The glycine anticodon contains the sequence CC, but the 3' base of the anticodon can pair nonspecifically with the 5' base of the codon. Glycine tRNA has four anticodons, and the appropriate anticodon specifically pairs with the correct codon. There are four tRNAs for glycine, each of which has an anticodon that specifically pairs with the correct codon. all of the aboveIndicate whether each of the following events occurs when tryptophan is high or when tryptophan is low by placing a check in each of the appropriate blanks. Share your reasoning. Event Tryptophan high Tryptophan low Ribosome does not stall at Trp codons ____________ ____________ Region 2 of the leader pairs with region 3 ____________ ____________ Ribosome covers part of region 2 of leader ____________ ____________ Transcription is terminated before structural genes are transcribed ____________ ____________Consider this short mRNA: 5’ – AUGGCAGUGCAA – 3’. Answer the following questions assuming the code is non-overlapping. 1. How many codons are represented in this oligonucleotide? 2. If the second G were changed to a C, what would be the resulting amino acid
- a) Identify the current stage of the translation process shown in Figure 1 and name the anticodon sequence in tRNAb) State TWO immediate, main consequences when a stop codon reaches the E site.Below is a diagram of charged tRNAS in the active site of the ribosome during translation of the MRNA into protein. What would be the codon in the mRNA that base pairs with the anti-codon in the t- RNA charged with Glu (Glutamic acid) ? HINT: Check the genetic code table/chart. X. Ala Arg Cys Gly Met Trp Leu Glu TRNA B TRNA A A 5'-AAC-3' 5'-CUU-3' 5'-GAA-3' 5'-AUG-3'Use the genetic code table. Which amino acid is coded for by only one codon sequence? Second Position U A G UUU Phe /F UCU UAU UGU UUC Tyr/Y Cys/C UCC UAC UGC Ser /s UUA Leu /L UCA UAA STOP UGA STOP UUG UCG UAG STOP UGG CUU CCU CAU CGU CỤC His / H Leu /L CC САС Pro / P CGC CUA ССА Arg/R CAA CGA CUG Gln /Q CCG CAG CGG AUU ACU AAU AGU AUC le /i ACC Asn / N Ser /S Thr/T AAC AGC AUA ACA AAA AGA AUG Met / M ACG Lys/K Arg/R AAG AGG GUU GCU GAU GGU GUC Asp/ D G Val /v GCC Ala / A GAC GGC GUA GCA Gly/G GAA GGA GUG GCG Glu /E GAG GGG valine serine threonine isoleucine methionine MacBook PrO G Search or type URL +, #3 Third Position SCAG UCAGU CAGU CA First Position