Question Bank: Tools and Technologies

What is the primary purpose of electrophoresis?

In gel electrophoresis, which type of gel is commonly used for separating DNA fragments?

What role does the tracking dye play in electrophoresis?

When performing electrophoresis, which direction do negatively charged particles move?

What is the significance of using polyacrylamide gel in electrophoresis?

In which scenario would you prefer using agarose gel over polyacrylamide gel for electrophoresis?

What is the expected result if no loading dye is added prior to running a gel electrophoresis?

Which of the following factors affects the migration speed of DNA in electrophoresis?

Which stain is commonly used to visualize DNA in agarose gels after electrophoresis?

What happens to DNA fragments of different sizes during gel electrophoresis?

What is the primary purpose of centrifugation?

Which of the following is NOT a component of the electrophoresis buffer?

In differential centrifugation, what primarily affects the sedimentation rate of particles?

What is the significance of using a control sample during electrophoresis?

What is density-gradient centrifugation primarily used for?

In the context of protein separation, which form of electrophoresis is commonly used?

Which type of centrifuge would you likely use for separating organelles from a cell extract?

What is one of the key advantages of using capillary electrophoresis over traditional methods?

At what speed does ultracentrifugation typically operate?

Which factor is least likely to affect the resolution of DNA bands during electrophoresis?

What happens to lighter particles during density-gradient centrifugation?

How does the speed of centrifugation affect the separation process?

In a centrifuge, what component holds the samples during operation?

Which type of centrifuge is commonly used for clinical applications?

What is the role of gravitational force in centrifugation?

Which of the following statements about ultracentrifugation is true?

What type of sample would most likely require density-gradient centrifugation for analysis?

Why is it important to control the temperature during centrifugation?

Which of the following statements about differential centrifugation is correct?

What is a common application of ultracentrifugation in biotechnology?

Who is credited with designing the first simple microscope?

What is the primary purpose of staining in microscopy?

Which type of microscopy allows visualization of live cells without staining?

In which microscopy technique are electrons used to create an image?

What defines the resolution of a microscope?

Bright field microscopy primarily uses which type of light?

Which microscopy technique provides three-dimensional images?

What property of a lens relates to its ability to bend light?

Which microscope uses a laser to illuminate a fluorescently labeled specimen?

What is a common application of transmission electron microscopy (TEM)?

The formula for calculating magnification (M) is expressed as which of the following?

Which of the following microscopy techniques is least likely to be used for live cell imaging?

What is the main disadvantage of light microscopy compared to electron microscopy?

Dark field microscopy is particularly useful for observing which type of specimens?

Which microscopy technique is most effective for imaging complex structures like sub-cellular organelles?

What is the primary purpose of ELISA?

What is the primary purpose of chromatography?

In a direct ELISA, which component is bound directly to the antigen?

In chromatography, what is the mobile phase?

Which type of ELISA is known for detecting the presence of antibodies in a sample via a two-step process?

What term describes the output pattern of solute peaks in chromatography?

What advantage does indirect ELISA have over direct ELISA?

Which type of chromatography uses a gas as the mobile phase?

Which enzyme is commonly used in ELISA assays?

In chromatography, what role does the stationary phase play?

In competitive ELISA, what is being measured?

How does the relative affinity of solute molecules affect chromatography?

Why is a standard curve used in ELISA procedures?

What is the purpose of pump systems in high-performance liquid chromatography (HPLC)?

What could be a disadvantage of direct ELISA?

Which property allows solute separation in chromatography?

What role does the substrate play in an ELISA?

What distinguishes liquid chromatography from gas chromatography?

What can result from cross-reactivity in ELISA?

During chromatography, what can be concluded if two solutes emerge at the same time?

What is a key characteristic of sandwich ELISA?

Which of the following is NOT a common application of chromatography?

Which of the following modifications of ELISA improves assay specificity?

What is the key factor that can lead to poor resolution in chromatography?

What type of sample can be analyzed using ELISA?

In which scenario would you employ ion-exchange chromatography?

What is the main limitation of ELISA compared to other immunological assays?

Why is it essential to select the appropriate stationary phase in chromatography?

What would be an indicator of a successful chromatography separation?

What type of technique is Fluorescence In Situ Hybridisation (FISH)?

What is the primary purpose of using fluorescent molecules in FISH?

Why is FISH particularly useful in diagnosing chromosomal abnormalities?

Which component is essential for the execution of FISH?

How does FISH contribute to the field of genetic research?

What kind of light is used in fluorescence microscopy for FISH?

In the context of FISH, what does the term 'probe' refer to?

What is a limitation of FISH?

Which of the following is NOT an application of FISH?

What does the term 'in situ' in FISH mean?

Fluorescence In Situ Hybridisation can be used to detect which of the following?

In FISH, what is the consequence of improper probe binding?

What is the step following the binding of fluorescent probes in FISH?

Which technology can complement FISH for enhanced results?

What is the primary application of UV/Visible spectroscopy?

Which type of spectroscopy provides information about molecular structure using radio waves?

What information is primarily gained from infrared spectroscopy?

In spectroscopy, what does the term 'absorbance' refer to?

Which spectroscopy technique is primarily used to analyze trace metals in a sample?

What does Raman spectroscopy mainly identify?

Which type of spectroscopy utilizes X-rays to assess elemental composition?

What is the primary principle behind colorimetry?

Which application does photoluminescence spectroscopy serve?

What does colorimetry measure in a solution?

Which of the following techniques can determine geometric isomer configurations?

Which spectroscopy method is useful for analyzing organic contaminants in water?

What wavelength range does UV/Visible spectroscopy typically utilize?

In mass spectrometry, what is the primary purpose of the ionization process?

What does X-ray absorption spectroscopy reveal about a molecule?

Which spectroscopy method is specifically used for analyzing the functional groups present in a sample?

What is the primary purpose of mass spectrometry?

Which component of a mass spectrometer is responsible for generating ions?

What does 'm/z' stand for in mass spectrometry?

What is the unit used to express mass in mass spectrometry?

Which phase do compounds need to be in for mass spectrometry analysis?

How does the mass spectrometer differentiate between ions?

What role does the detector in mass spectrometry play?

Which type of mass spectrometry involves fragmentation of ions?

What type of data is primarily output from a mass spectrometer?

In mass spectrometry, the term 'fragmentation' refers to what?

Why is mass spectrometry considered a powerful analytical technique?

What does 'ionization' refer to in mass spectrometry?

In which scenario would a high-resolution mass spectrometer be essential?

What type of sample preparation might be necessary before mass spectrometry?

Which application of mass spectrometry involves studying proteomics?

What is the primary purpose of DNA sequencing?

Which DNA sequencing method uses dideoxynucleotides for chain termination?

What does Next Generation Sequencing (NGS) primarily improve upon compared to Sanger's method?

In Sanger's method, what is the role of the labeled dideoxynucleotide?

Which technique is often used to validate the results obtained from NGS?

What are the two main types of DNA sequencing methods?

What is the role of primers in DNA sequencing?

Which aspect of DNA is primarily sequenced using NGS technology?

Maxam and Gilbert method mainly relies on which principle?

What is an important application of DNA sequencing in forensics?

When applying Sanger sequencing, what happens to the bound dideoxynucleotide once incorporated?

What characteristic of dideoxynucleotides prevents DNA strand elongation?

Which sequencing technology has revolutionized genomic research in recent years?

In which type of applications is Sanger sequencing still preferred today?

What is the main purpose of flow cytometry?

Which component of the flow cytometry system detects light after it is scattered by cells?

What type of dye is commonly used in flow cytometry to label specific antibodies?

In flow cytometry, how are cells characterized?

What is the flow chamber's role in a flow cytometer?

What advantage does flow cytometry provide over traditional microscopy?

Which type of light detector is positioned perpendicular to the laser beam in a flow cytometer?

Flow cytometry is often used in immunology to study what component of the immune cells?

What type of data output does flow cytometry generate?

Why is calibration important in flow cytometry?

When analyzing cell samples in flow cytometry, what could lead to inaccurate results?

What is one key limitation of flow cytometry?

What is the typical sample type used for flow cytometry analysis?

Flow cytometry can be especially useful in which of the following fields?

What is the primary use of DNA microarray technology?

Which component on a DNA microarray chip is immobilized to capture target DNA?

What type of DNA is primarily analyzed using DNA microarrays?

What is contained on a DNA microarray chip?

Which of the following statements is true about hybridization in DNA microarrays?

In a DNA microarray experiment, what does a high signal intensity typically indicate?

What is one advantage of using DNA microarrays in research?

Which of the following is a necessary step before performing a DNA microarray experiment?

DNA microarray technology can help in identifying which of the following?

Which type of array is used to examine gene expression by correlating mRNA levels?

How are the DNA probes on a microarray chip arranged?

What happens to the DNA during the hybridization process in microarray analysis?

What type of technology is usually employed to detect hybridization events on microarrays?

Which of the following techniques is complementary to DNA microarrays and is used to sequence DNA?

In DNA microarray analysis, which factor could lead to false results?

Which aspect is crucial for the success of a DNA microarray experiment?