Assume that a mutation occurs in the gene that encodes each of the following RNA polymerases. Match the mutation with its possible effects by placing the correct letter or letters in the blanks below. There may be more than one effect for each mutated polymerase. A mutation in the gene that codes for E RNA polymerase I RNA polymerase II RNA polymerase III Possibleeffects a. tRNA is not synthesized b. Some ribosomal RNA is not synthesized c. Ribosomal RNA is not processed d. pre-mRNA is not processed e. Some mRNA molecules are not degraded f. pre-mRNA is not synthesized

Assume that a mutation occurs in the gene that encodes each of the following RNA polymerases. Match the mutation with its possible effects by placing the correct letter or letters in the blanks below. There may be more than one effect for each mutated polymerase. A mutation in the gene that codes for E RNA polymerase I RNA polymerase II RNA polymerase III Possibleeffects a. tRNA is not synthesized b. Some ribosomal RNA is not synthesized c. Ribosomal RNA is not processed d. pre-mRNA is not processed e. Some mRNA molecules are not degraded f. pre-mRNA is not synthesized

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Which of the following best describes this type of mutation? Original – CCU-GAU-GAG-UCA Mutated – CCU-GAU-GAG-UGA* Please choose one correct answer only A. Missense B. Nonsense C. Silent D. Frameshift
Eukaryotic RNA polymerase II is used to synthesize: a. rRNA O b. tRNA O C. O d. RNA from viral DNA O e. mRNA double helical viral DNA from viral RNA
*Has either 1 or 2 correct answers*
This is a list of molecular changes that could happen during DNA replication, transcription, mRNA processing, or translation. For each, determine whether or not the change will be passed down through generations of cells after it occurs. Explain your answer. C->G point mutation in the DNA of a coding region of a gene A->T point mutation in the noncoding region of a gene An error in transcription changes the mRNA sequence such that what was an amino acid-coding codon in the DNA sequence is now a stop codon in the mRNA sequence. An error in translation causes the amino acid alanine (nonpolar) to be replaced by the amino acid glutamic acid (polar and negatively charged).
Identify the best match between the mutation description and term. a. Transversion: results in a change in single nucleotide from a purine to another purine or a pyrimidine to another pyrimidine b. Nonsense mutation: a change in the DNA that changes the codon code from one amino acid to another amino acid c. Missense mutation: causes a drastic change in phenotype because the change causes a premature stop in the amino acid sequence d. Indel: has the potential to cause large changes in transcription and subsequence amino acid sequence due to reading frameshifts
Someone submits a saliva sample for a PCR test to determine whether he is infected withSARS-CoV-2, an RNA virus. The first step is to purify RNA from the sample. Next, the RNA isconverted into cDNA.A. Why is this conversion important B. What is the first enzyme required for this step? C. Does this enzyme require a primer? Briefly explain. D. Three days later, the person submits another sample. The qPCR data againindicates a positive result; however, the spike gene Ct value is now 33. Based on the PCRdata, are they at the beginning or end of a COVID viral infection? Explain how you made thisdetermination
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Give correct typing answer with explanation and conclusion You found a mutation in a gene that causes a reading frame shift early in its mRNA. This introduces an early stop codon that results in a complete lack of functional protein. Which of the following is the most likely cause of this mutation? A single base deletion in an exon of the gene A 6 base deletion in an intron the gene A 3 base insertion in an exon of the gene A 4 base insertion in an intron of the gene
The antibiotic kasugamycin blocks the binding of methionine to tRNA. From this information, you can conclude that kasugamycin prevents: transcription in prokaryotes mRNA-ribosome binding in eukaryotes the synthesis of ribosomes by rRNA in eukaryotes the initiation of the synthesis of a protein in prokaryotes e. RNA polymerase from binding to a promoter
Rifamycins have been used for the treatment of many diseases, including HIV-related Tuberculosis. Explain how Rifamycins inhibit the activities of bacterial DNA dependent RNA polymerase.
a. Mycobacteriophage genes occasionally begin with GUG or, even more rarely , UUG (rather than AUG ). Which amino acids corre spond to these codons ? b. Yeast genes occasionally begin with CUG, ACG , or AUC . Which amino acids correspond to these codons ?
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