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Questions and Answers
What is the efficiency of an ULPA Filter at 0.12 microns?
Which program is recommended to control arthropods and rodents in a biosafety environment?
What is one of the ways to ensure biosafety in laboratories?
What is a key component in maintaining biosafety in laboratories?
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Which type of immunization is an example of passive immunization mentioned in the text?
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Why is it important to provide effective personal protective equipment and procedures?
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What is the primary goal of the Laboratory Quality Management System (LQMS)?
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What is a fundamental objective of biosafety in a molecular biology lab?
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Why are alcohol-based cleansers not recommended after contact with spore-forming bacteria?
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What should individuals do after working with potentially hazardous materials in the Laboratory?
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Why is it important to wash hands after working with certain chemicals in the laboratory?
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What is key to preventing laboratory and personnel exposure to potentially infectious agents or biohazards?
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What is the purpose of using Geobacillus stearothermophilus as a biological indicator in an autoclave?
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What is the primary function of HEPA filters in a biosafety cabinet?
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What is the recommended method for decontaminating medical wastes according to the given information?
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According to the information given, what is the primary requirement for working with infectious specimens in a biosafety cabinet?
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What is the purpose of the autoclave tape used during the sterilization process?
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What is the significance of the $0.3$ micron pore size mentioned in the context of HEPA filters?
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What is the primary difference between RNA and DNA based on the given information?
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What is the function of RNA polymerase in gene expression based on the provided text?
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Which nucleotide base is NOT present in RNA molecules according to the text?
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How does RNA differ from DNA in terms of size according to the information provided?
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What role does RNA play in protein synthesis based on the text?
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How does the structure of RNA differ from that of plasmids based on the provided information?
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What is the function of small nuclear RNA in eukaryotes?
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Which type of RNA polymerase is primarily responsible for polymerizing mRNA in eukaryotes?
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What is the role of RNA Helicase during transcription?
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Which enzyme is responsible for attaching the primer to the specific start site of transcription?
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What is the main function of non-coding RNA (ncRNA) transcribed by RNA polymerase 1?
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During transcription, what is the role of RNA Polymerase in relation to the DNA double helix?
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Which of the following statements about ribosomal RNA (rRNA) is correct?
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What is the primary function of transfer RNA (tRNA) during translation?
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Which of the following statements about messenger RNA (mRNA) is correct?
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What is the significance of the three-letter nucleotide sequence (UAG) in transfer RNA (tRNA)?
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Which of the following statements about transcription is correct?
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Which of the following statements about protein structure is correct?
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Which substance is used in DNA extraction to dissolve lipids and lipoproteins?
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What is the purpose of using cetylmethylammonium bromide (CTAB) in DNA extraction from fungi?
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What is the main function of adding ethanol in the DNA extraction process?
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In DNA extraction, which step involves the formation of three layers, including an aqueous phase, an amphiphilic phase, and an organic phase?
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What is the primary purpose of low pH in DNA extraction after alkaline lysis?
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Which enzyme is added at either the first or last step of the DNA extraction procedure to degrade RNA?
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What is the purpose of using xylene in the DNA extraction procedure from paraffin-embedded tissues?
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Which dye is specifically mentioned to bind to adenine and thymine base pairs in DNA?
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In DNA extraction, why are particulate matter, phenol, and protein considered common contaminants when using spectrophotometry?
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Which step of the DNA extraction process involves adding proteinase K to lyse the proteins in the sample?
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What is the main function of 3,5-diaminobenzoic acid (DABA) in DNA extraction?
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What technique measures fluorescence related to DNA concentration using specific fluorescent dyes?
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Which enzyme is preferred for enzymatic digestion in DNA extraction due to its ability to digest proteins?
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What is the primary concern with mechanical disruption in DNA extraction methods?
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Which method is used in DNA extraction when the sample is solid?
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What is the primary purpose of using glass beads in DNA extraction?
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In DNA extraction, what is the role of centrifugation?
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What method is utilized to quantify DNA concentration in fluorometry during DNA extraction?
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What is the optimal GC content range for a primer?
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Why is it important for a primer's length to be 18-22bp?
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What happens if the primer annealing temperature is too low?
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Why must the DNA template be free of contaminants before amplification?
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What is the purpose of analyzing PCR products before further processes?
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Why should a primer have specific binding to the target DNA segment?
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Which factor primarily determines the specificity of a PCR primer?
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What is the primary consideration when determining the optimal annealing temperature for a PCR primer?
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Which of the following statements about the GC content of a PCR primer is correct?
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Which technique is commonly used to analyze the products of a PCR amplification?
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What is the recommended length range for PCR primers?
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Which factor can contribute to non-specific amplification during PCR?
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Which of the following statements about forward primers in PCR is correct?
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What is the primary consequence of mispriming in PCR?
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Which of the following factors can make it more difficult to optimize PCR amplification?
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What is the primary concern associated with primer dimers in PCR?
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What is the recommended amount of genomic DNA template for routine clinical analysis using PCR?
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Which of the following characteristics is desirable for an optimal DNA template in PCR?
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What enzyme is responsible for repairing nicks in the sugar-phosphate backbone of DNA during the DNA extraction process described in the text?
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Which enzyme is crucial for the protection of DNA from methylation, ensuring the integrity of the genetic information?
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In the context of DNA extraction, what role does DNA ligase play in the formation of recombinant DNA molecules?
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During the recombination process in sexual reproduction, what is the primary function of restriction enzymes?
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What is the main purpose of nucleic acid protection mechanisms described in the text related to DNA extraction?
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Which of the following probes does not have a negatively charged phosphodiester backbone, allowing for stronger hydrogen bonding with the target sequence?
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Which of the following non-radioactive labels is commonly used for probe labeling and can be covalently attached to nucleotide triphosphates like UTP or CTP?
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Which of the following statements about RNA probe labeling is correct?
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Which type of nucleic acid probe is designed to have increased flexibility by locking or unlocking the 2nd and 3rd carbons (C2 and C3), potentially destabilizing the double helix?
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Which type of nucleic acid probe is designed to be inaccessible to RNA by locking the 2nd and 4th carbons (C2 and C4)?
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Which type of nucleic acid probe is chemically synthesized and resistant to nucleases that degrade DNA and RNA, but lacks the negatively charged phosphodiester backbone?
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Which of the following enzymes is responsible for joining two DNA fragments by forming a phosphodiester bond?
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What is the primary function of a methyltransferase enzyme in relation to DNA?
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During sexual reproduction, which process facilitates the exchange of genetic material between homologous chromosomes?
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Which of the following enzymes is responsible for cleaving DNA at specific recognition sequences?
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What is the primary function of nucleic acid protection mechanisms in cells?
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Which of the following enzymes is involved in the process of DNA replication?
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What is one of the disadvantages of the Vacuum Transfer method described in the text?
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How much RNA is typically applied to 0.8% to 1.5% agarose gel/polyacrylamide gels for analysis as mentioned in the text?
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What must be done to the gel before transferring RNA to a membrane using Polyacrylamide gel, according to the text?
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What is a drawback associated with the C.Vacuum Transfer method, as noted in the text?
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Which of the following statements accurately describes the purpose of standard precautions in a healthcare setting?
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According to the information provided, which of the following microorganisms is considered the most resistant to disinfectants?
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Which of the following practices is not mentioned as part of standard precautions in the given information?
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What is the main difference between primers and probes in terms of their usage as described in the text?
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What is the effect of mispriming during amplification based on the information provided?
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Why is it crucial for forward and reverse primers to anneal at the same temperature or within a 2-degree difference?
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What role does primer placement play in determining the size of the amplified product?
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What is the critical component of a PCR reaction according to the text?
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How do commercially purchased primers determine their synthesis according to the provided information?
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What is the primary structural difference between DNA and RNA?
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Which carbon position on the pentose sugar determines whether it is ribose or deoxyribose?
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What is the primary function of the third carbon on the pentose sugar?
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What is the distinction between a nucleotide and a nucleoside?
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What structural characteristic distinguishes single-stranded nucleic acids from double-stranded ones?
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Which of the following is a key difference between DNA and RNA in terms of their composition?
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What was the significance of Gregor Mendel's discovery in 1865?
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What was the groundbreaking contribution of James Watson and Francis Crick in 1953?
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What is the primary function of nucleic acids, as stated in the text?
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What was the significance of Kary Mullis's discovery in 1985?
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What are the three functional groups that make up a nucleotide, the building block of DNA and RNA?
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What was the significance of the recombinant DNA technology discovery in 1970?
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