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7. What are the modification systems, which allow one gene three) to code for many proteins?...
51. E. coli is being used to study various agents that inhibit protein synthesis. One agent binds...
51. E. coli is being used to study various agents that inhibit protein synthesis. One agent binds the 23S rRNA of the 50S subunit and prevents peptide bond formation. No new proteins are produced. To which antibiotic is this agent likely related? a. chloramphenicol b. streptomycin c. puromycin d. tetracycline e. erythromycin We were unable to transcribe this image57. A protein that affects the expression of many different genes is known as a L 74. One benefit of operons in...
Describe one method which would allow you to demonstrate the presence of a specific gene in...
Describe one method which would allow you to demonstrate the presence of a specific gene in your cells.
What type of environment do you think the lactase-persistent gene (genes code for proteins/enzymes) came from?...
What type of environment do you think the lactase-persistent gene (genes code for proteins/enzymes) came from? In other words, what type of environment would be able to digest lactose be advantageous?
A geneticist discovers that two different proteins are encoded by the same gene. One protein has...
A geneticist discovers that two different proteins are encoded by the same gene. One protein has 56 amino acids, and the other has 82 amino acids. Which of the statements are possible explanations for how the same gene can encode both of these proteins? 1-The same gene encodes both proteins by using different combinations of introns in the pre‑mRNA via alternative splicing. 2-The same gene encodes both proteins by generating a poly(A) tail on the pre‑mRNA. 3-The same gene encodes...
Name two ways a virus can make multiple proteins from one gene and describe the mechanism...
Name two ways a virus can make multiple proteins from one gene and describe the mechanism for both?
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
A tryptophan tRNA gene mutates so that it recognizes one of the three possible stop codons...
A tryptophan tRNA gene mutates so that it recognizes one of the three possible stop codons – TGA now codes for Trp, according to the mutant tRNA. a) Will all proteins in the cell be affected by this mutation? Briefly explain your answer; if not all proteins will be affected, estimate about what fraction of proteins will be affected. b) Gene X encodes the stop with TGA. How will this mutation affect the protein X that is produced? c) Will...
Which statements about the modification of chromatin structure in eukaryotes are true? 2 pts a. Acetylation...
Which statements about the modification of chromatin structure in eukaryotes are true? 2 pts a. Acetylation of histone tails in chromatin allows access to DNA for transcription. b. Histone proteins are always permanently placed along a DNA sequence but the binding to DNA can be loosened. c. Methylation of DNA is associated with the gene activation. d. Acetylation of histone tails is a reversible process. e. Some forms of chromatin modification can be passed on to future generations of cells.
onaformation from a ee is used in the synthesisof 17 functional gene product. A) Geno B)...
onaformation from a ee is used in the synthesisof 17 functional gene product. A) Geno B) Gene regulation C) Epigenetics D) Imprinting E) Chromatin remodeling 18. A histone code is the: A) B) nucleotide sequence of an individual histone protein's gene. pattern of chemical modification of the DNA wrapped around an individual histone. C) D) E) pattern of chemical modification of the histone tails. number of amino acids in an individual histone that are methylated None of the other answer...
Which one of the following is the main reason that a typical eukaryotic gene is able...
Which one of the following is the main reason that a typical eukaryotic gene is able to respond to a far greater variety of regulatory signals than a typical prokaryotic gene or operon? A. Eukaryotes have three types of RNA polymerase. B. Eukaryotic RNA polymerases require general transcription factors. C. The transcription of a eukaryotic gene can be influenced by proteins that bind far from the promoter. D. Prokaryotic genes are packaged into nucleosomes.
51. E. coli is being used to study various agents that inhibit protein synthesis. One agent binds the 23S rRNA of the 50S subunit and prevents peptide bond formation. No new proteins are produced. To which antibiotic is this agent likely related? a. chloramphenicol b. streptomycin c. puromycin d. tetracycline e. erythromycin We were unable to transcribe this image57. A protein that affects the expression of many different genes is known as a L 74. One benefit of operons in...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
onaformation from a ee is used in the synthesisof 17 functional gene product. A) Geno B) Gene regulation C) Epigenetics D) Imprinting E) Chromatin remodeling 18. A histone code is the: A) B) nucleotide sequence of an individual histone protein's gene. pattern of chemical modification of the DNA wrapped around an individual histone. C) D) E) pattern of chemical modification of the histone tails. number of amino acids in an individual histone that are methylated None of the other answer...
Which one of the following is the main reason that a typical eukaryotic gene is able to respond to a far greater variety of regulatory signals than a typical prokaryotic gene or operon? A. Eukaryotes have three types of RNA polymerase. B. Eukaryotic RNA polymerases require general transcription factors. C. The transcription of a eukaryotic gene can be influenced by proteins that bind far from the promoter. D. Prokaryotic genes are packaged into nucleosomes.
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