If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Your IP: 149.202.184.6 What would happen if the mRNA codon that coded for Cys was mutated in the third position from a U to an A? With which genetic region does the repressor protein interact? Bacteriophages are important for which of the following processes? Diatonic254 The answer is a misense mutation. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. A polypeptide in a wild type microbe contains the sequence Leu-Pro-Tyr-Ser-Pro. When a transducing phage interacts with a new host cell. • Cloudflare Ray ID: 5f0fba2d6c16dfc7 Which of the following causes mutations by creating thymine dimers. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. "Mutant" alleles can vary to a great extent, and even become the wild type if a genetic shift occurs within the population. Originally, the wild type was conceptualized as a product of the standard "normal" allele at a locus, in contrast to that produced by a non-standard, "mutant" allele. Okazaki fragments are formed because DNA replication. The nucleotide sequence of an anticodon is __________ its corresponding codon. stay healthy, because their immune systems can kill this strain easily. Generalized transduction is initiated during lytic cycle of a virulent bacteriophage; specialized transduction is initiated during the lysogenic cycle of a temperate bacteriophage, contains fragments of the host chromosome instead of the viral genome. Which of the following is an example of horizontal gene transfer in bacteria? conjugation . An organism must copy its DNA to pass genetic information to its offspring. A polypeptide in a wild type microbe contains the sequence Leu-Pro-Tyr-Ser-Pro. Semiconservative DNA replication means that. What is the function of the parental DNA in replication? Why is the tryptophan operon turned off in the presence of tryptophan? What is the basic function of the lac operon? where on the DNA strand does a repressor bind? If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Which statement about DNA replication is CORRECT? Bacterial chromosomes typically have several origins of replication. A mutation that causes production of a defective pilus in a bacterium will prevent. • Tentative ECOFFs separating wild-type from non-wild-type strains were defined for all investigated drugs (Table (Table2), 2), including viomycin and amikacin, for which no recommended critical concentration for solid medium is available. https://quizlet.com/239348032/chapter-7-study-guide-flash-cards Wild type (WT) refers to the phenotype of the typical form of a species as it occurs in nature. • The amine group of each peptide bond runs generally upward and parallel to the axis of the helix; the carbonyl group points generally downward. Mice that are injected with only the R strain of Streptococcus pneumoniae. Which of the following enzymes is responsible for "unzipping" a DNA molecule in preparation for its replication? DNA ligase adds nucleotides to the lagging strand. A mutation that causes production of a defective pilus in a bacterium will prevent. how do the repressor proteins block the transcription of the structural genes? this is an example of a(n) _____ mutation. Parmi eux, les peptides multicycliques, les peptides phosphorylés ou encore ceux intégrant des liaisons non-pep A polypeptide in a wild type microbe contains the sequence Leu-Pro-Tyr-Ser-Pro. Transfer of DNA between organisms of the same generation. In a repressible operon, which of the following must occur to enable gene expression? Conjugation is typically disrupted before the fertility factor can be transferred. Which of the following build(s) new strands of DNA. How does an F+ cell differ from an Hfr cell? Tryptophan binds to and activates the repressor proteins; the repressor proteins, in turn, bind to the operator, preventing transcription. Transduction, conjugation, and transformation. This is an example of a(n) ________ mutation. At which site on the ribosome does the transfer RNA dock initially during elongation? Which type of bond ensures that the transfer RNA is in the correct position over the codon during translation? Which of the following mechanisms normally repairs pyrimidine dimers? What is the hallmark of all horizontal gene transfers? Au-dessus de 100 (ou encore 50, définition arbitraire) acides aminés on parle généralement de protéine [1]. What benefit does the F- strain receive from mating with an Hfr strain? A single polypeptide or protein may contain multiple secondary structures. can take up DNA from their surrounding environment and integrate it into their own chromosomes by recombination. A phenotypic variant of the species has the peptide sequence Leu-Pro-Cys-Ser-Pro. When the cell is not in the presence of lactose, the repressor proteins bind to the operator. Which operons are never transcribed unless activated? Which of the following must occur to enable the transcription of genes in the lactose operon? The process of making a complementary copy of DNA into the form of RNA is called __________. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Another way to prevent getting this page in the future is to use Privacy Pass. What characteristic of the S strain allows it to evade the immune system of the mice. Which of the following characteristics of a chromosome would identify it as a prokaryotic chromosome rather than a eukaryotic chromosome? is a cell that receives DNA from an outside source and incorporates it into its own. What are the products of semiconservative replication for a double-stranded DNA molecule? Performance & security by Cloudflare, Please complete the security check to access. the DNA from the previous host can recombine with the new host chromosome. Amino acids are delivered in their appropriate order by. Hfr strains have the F plasmid integrated into the chromosome. Which finding is most surprising from Griffith's experiments? How is generalized transduction different from specialized transduction? What is the inducer molecule in the lac operon? It acquires new, potentially beneficial genes from the Hfr strain. S strain cells are isolated from the blood of mice infected with heat-killed S strains and live R strains. What most likely explains the recovery of live S strain cells from a mouse injected with heat-killed S strain mixed with live R strain cells? You may need to download version 2.0 now from the Chrome Web Store.