16) What would happen if a mutation occurred in E. Coli that eliminated the production of...
16) What would happen if a mutation occurred in E. Coli that eliminated the production of the protein sigma?
A) Ribosomes would no longer be able to participate in translation
B) mRNA transcripts would no longer be produced
C) Amino Acids could no longer be connected to one another via peptide bonds
D) Introns would no longer be spliced out of MRNAs
E) mRNA transcripts could not dissociate from the RNA polymerase
Homework Answers
Sigma factor is an initiation factor that binds to core RNA polymerase to convert it into holoprotein. If sigma is not present there will be no transcription.
Correct option - B
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16) What would happen if a mutation occurred in E. Coli that
eliminated the production of...
13. Why are ribonucleoside triphosphates the monomers required for RNA synthesis rather than ribonucleoside monophosphates? A....
13. Why are ribonucleoside triphosphates the monomers required for RNA synthesis rather than ribonucleoside monophosphates? A. Only ribonucleoside triphosphates contain the sugar ribose. B. Ribonucleoside triphosphates have low potential energy, making the polymerization reaction endergonic. C. Ribonucleoside triphosphates have high potential energy, making the polymerization reaction exergonic. D. Ribonucleoside monophosphates cannot form complementary base pairs with the DNA template. E. Ribonucleoside triphosphates are not used, rather all use deoxyriboside triphosphates. 14. How is a mutation in a bacterial cell that...
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moose the correct alphabet (letter, noting that each and may have only ch answer can be used more than once Answers a Eukaryotic mRNAS b.Prokaryotic mRNAs e . Transfer RNAS d. RNAs f. All RNAS e. Pre-mRNA the have a cloverleaf structure are synthesized by RNA polymerases the RNA that has the anti-codon are the template of genetic information during protein synthesis contains exons and introns is a structural component of the ribosome is the RNA that goes into the...
QUESTION 34 The gene encoding an E. coli tRNA containing the anticodon 5'-GUA-3' mutates so that...
QUESTION 34 The gene encoding an E. coli tRNA containing the anticodon 5'-GUA-3' mutates so that the anticodon now is 5'-UUA-3'. What will be the effect of this mutation? a. The bacterial ribosomes would stop translation whenever a tyrosine codon in a mRNA is positioned in the A site. b. The bacterial ribosomes would stop translation whenever a leucine codon in a mRNA is positioned in the A site. c. The bacterial ribosomes would compete with the termination factor to...
what would happen to transcription in e coli if the genes ending the rna polymerase beta...
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answer all the questions 18) A mutation occurs such that a spliceosome cannot remove one of...
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E. coli can be found in a pond. If very high amounts of tryptophan are present...
E. coli can be found in a pond. If very high amounts of tryptophan are present in this environment, then which of the following conditions would likely be occurring in E. coli? Choose YES if that condition would likely be occurring, or NO if that condition would not likely be occurring. Yes No The first enzyme (or enzyme complex) in the biosynthetic pathway for tryptophan synthesis is inhibited by feedback inhibition. Yes No The leader-attenuator region of the trp mRNA forms hairpins...
QUESTION 1 QUESTION 5 QUESTION 11 Identify the components required for translation initiation in bacteria What...
QUESTION 1 QUESTION 5 QUESTION 11 Identify the components required for translation initiation in bacteria What is the enzymatic component of the ribosome? A Protein Identify the TRANS components of the transcription initiation complex in bacteria ATFIE Bir RNA C. TATA BOX D-10 and 35 sequences E Signa factor B. Carbohydrates C.RNA CATFIE B. 5methyl guanosine cap C. Shine-Dalgamo Sequence D. Sigma factor CETFIID (TBP and TAFS) FTFIIB G. Initiator RNA H.10 and 35 sequences EL Smal ribosomal subunit J....
QUESTION 1 George Beadle and Edward Tatum performed an experiment in which they made single-gene mutations...
QUESTION 1 George Beadle and Edward Tatum performed an experiment in which they made single-gene mutations in the bread mold Neurospora crassa. These mutations resulted in several Neurospora auxotrophs. Further analysis revealed specifically how the mutations affected synthesis of the amino acid in question. What was the significance of these results? A single gene encodes a single protein, in the case of this experiment, an enzyme. Enzymes are needed to synthesize amino acids. They showed that mutations are heritable. They...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to...
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
13. Why are ribonucleoside triphosphates the monomers required for RNA synthesis rather than ribonucleoside monophosphates? A. Only ribonucleoside triphosphates contain the sugar ribose. B. Ribonucleoside triphosphates have low potential energy, making the polymerization reaction endergonic. C. Ribonucleoside triphosphates have high potential energy, making the polymerization reaction exergonic. D. Ribonucleoside monophosphates cannot form complementary base pairs with the DNA template. E. Ribonucleoside triphosphates are not used, rather all use deoxyriboside triphosphates. 14. How is a mutation in a bacterial cell that...
moose the correct alphabet (letter, noting that each and may have only ch answer can be used more than once Answers a Eukaryotic mRNAS b.Prokaryotic mRNAs e . Transfer RNAS d. RNAs f. All RNAS e. Pre-mRNA the have a cloverleaf structure are synthesized by RNA polymerases the RNA that has the anti-codon are the template of genetic information during protein synthesis contains exons and introns is a structural component of the ribosome is the RNA that goes into the...
QUESTION 34 The gene encoding an E. coli tRNA containing the anticodon 5'-GUA-3' mutates so that the anticodon now is 5'-UUA-3'. What will be the effect of this mutation? a. The bacterial ribosomes would stop translation whenever a tyrosine codon in a mRNA is positioned in the A site. b. The bacterial ribosomes would stop translation whenever a leucine codon in a mRNA is positioned in the A site. c. The bacterial ribosomes would compete with the termination factor to...
22. What are the roles of Dicer and RISC in the function of miRNAs? Dicer RISC 23. Describe the concepts of primary, secondary, tertiary and quaternary protein structure 24. Here is a short sequence of codons. AUG CAU UGU UUU Write out the amino acids this sequence of codons encodes. Now add an insertion mutation of your choosing in the first codon and write out the new mutant sequence. What are the first four amino acids encoded by this mutant...
answer all the questions
18) A mutation occurs such that a spliceosome cannot remove one of the introns in a gene. What effect will this have on the gene? Translation will continue, but a nonfunctional protein will be made b) Translation will continue and will skip the intron sequence c) It will have no effect; the gene will be transcribed and translated into protein d) Transcription will terminate easily and the protein will not be made 19. During the process...
QUESTION 1 QUESTION 5 QUESTION 11 Identify the components required for translation initiation in bacteria What is the enzymatic component of the ribosome? A Protein Identify the TRANS components of the transcription initiation complex in bacteria ATFIE Bir RNA C. TATA BOX D-10 and 35 sequences E Signa factor B. Carbohydrates C.RNA CATFIE B. 5methyl guanosine cap C. Shine-Dalgamo Sequence D. Sigma factor CETFIID (TBP and TAFS) FTFIIB G. Initiator RNA H.10 and 35 sequences EL Smal ribosomal subunit J....
QUESTION 13 What chemical group is at the end of an amino acid chain corresponding to the 3' end of the mRNA molecule? A. Peptide bond B.5 phosphate group C.3" hydroxyl group D. Amino (N-terminus) E. Carboxyl (C-terminus) QUESTION 14 Which of the following is true regarding pre-mRNA modifications/processing? O A. Alternative splicing allows for increased complexity and synthesis of protein isomers OB. The 5' cap is added after RNA polymerase dissociates from the gene OC. The poly A tail...
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