Gel electrophoresis - Study guides, Class notes & Summaries

CST ACTUAL EXAM QUESTIONS AND ANSWERS 2024/2025;ACE IN THE CST TEST 100% VERIFIED Which of the following is the wound classifications for a bronchoscopy: Clean Contaminated Dirty and infected Clean-contaminated Ans- Clean-Contaminted Which of the following structures is located in the alveolar processes? Teeth Sinuses Tonsils Villi Ans- Teeth The enzyme used to soften the zonules of the lens before cataract surgery is: Atropine sulfate Alpha-chymotrypsin Acetylcholine chl...

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PCR and Gel Electrophoresis Questions and Answers Graded A+ What’s the primary purpose of PCR before running a gel electrophoresis? PCR amplifies specific DNA segments, making millions of copies so that there’s enough to see when you run it through the gel. How does PCR know which part of the DNA to copy? PCR uses primers—short sequences that match the start and end of the target DNA region, telling the enzyme exactly where to begin and stop copying. What role does the poly...

Gel Electrophoresis Diagram Latest Update 100% Pass What is the purpose of the wells at the top of the gel? The wells are used to load DNA samples into the gel before the electrophoresis process begins. Why are the DNA samples loaded near the negative end of the gel? DNA is negatively charged, so it is loaded near the negative end so it can migrate toward the positive end. What do the bands on the gel represent? The bands represent DNA fragments that have been separated based on...

Gel Electrophoresis Questions and Answers Already Passed What is gel electrophoresis primarily used for in molecular biology? Gel electrophoresis is primarily used for separating nucleic acids or proteins based on their size and charge. How does gel electrophoresis work to separate DNA fragments? Gel electrophoresis works by applying an electric field to a gel matrix, causing negatively charged DNA fragments to migrate towards the positive electrode, with smaller fragments moving...

Gel Electrophoresis Questions and Answers Rated A+ What role does gel electrophoresis play in gene therapy research? Gel electrophoresis is used to analyze the delivery and integration of therapeutic genes into target cells, helping assess the effectiveness of gene therapy approaches. How can gel electrophoresis help identify pathogens in a clinical setting? By amplifying specific genetic markers of pathogens and separating them using gel electrophoresis, researchers can quickly ide...

Gel Electrophoresis Quiz Latest Update Graded A+ What is the role of the agarose gel in gel electrophoresis? The agarose gel provides a medium through which the DNA or protein fragments can migrate, allowing for separation based on size. How does the electric field affect the movement of DNA in gel electrophoresis? The electric field causes negatively charged DNA molecules to move towards the positive electrode, facilitating their separation. What is a DNA ladder, and why is it i...

Gel electrophoresis Questions and Answers Graded A+ What kind of "track" does gel electrophoresis create for DNA? It creates a microscopic race track where DNA fragments can compete based on size, with smaller fragments sprinting ahead! If DNA fragments were athletes, how would they compete in gel electrophoresis? Smaller athletes (fragments) would zoom through the gel like sprinters, while larger ones lumber along, taking their sweet time. What’s the gel in gel electroph...

Lab 3 Gel Electrophoresis Questions and Answers Graded A+ What would happen if you dropped your DNA sample outside the well? If you miss the well, your sample would float away in the buffer, and nothing will separate during the run! Why does DNA naturally "run away" from the negative end of the gel? DNA has a negative charge due to its phosphate backbone, so it’s repelled by the negative electrode and races toward the positive side. What do the DNA bands look like under U...

Gel Electrophoresis Questions and Answers Already Passed What property of DNA allows it to migrate towards the positive electrode during gel electrophoresis? DNA is negatively charged due to its phosphate backbone, causing it to move towards the positive electrode when an electric field is applied. In gel electrophoresis, what role does the gel matrix play in the separation of molecules? The gel matrix acts as a sieve, allowing smaller molecules to pass through more easily while re...

Gel Electrophoresis Questions and Answers Already Passed What type of gel is typically used for separating nucleic acids? Agarose gel is typically used for separating nucleic acids like DNA and RNA. How does the size of DNA fragments influence their migration rate in gel electrophoresis? Smaller DNA fragments migrate faster through the gel than larger fragments due to less resistance in the gel matrix. What is the purpose of applying a dye to the gel before electrophoresis? Dyes ...

Gel Electrophoresis (Honors Bio) Questions and Answers 100% Pass How do scientists visualize DNA after it has been separated by gel electrophoresis? Scientists use staining agents, such as ethidium bromide or SYBR Green, which bind to DNA and make it visible under UV light. What would happen if the gel concentration is too high in gel electrophoresis? If the gel concentration is too high, the pores would be too small, and larger DNA fragments would have difficulty moving through the g...