pGLO Bacterial Transformation Quiz

Instructions

For each question, either choose the correct answer from the list provided or write your answer in the space provided. Good luck!

Questions

What does pGLO stand for?
- A. Plasmid Green Fluorescent Organism
- B. Plasmid Gene for Lactose Operon
- C. Plasmid with Green Fluorescent Protein
- D. Plasmid Gene for Orange Fluorescence
Which organism is commonly used for the pGLO transformation experiment?
- A. Yeast
- B. E. coli
- C. Saccharomyces
- D. Bacillus subtilis
What is the main purpose of the pGLO plasmid?
- A. To produce insulin
- B. To express a green fluorescent protein
- C. To enhance antibiotic resistance
- D. To increase nutrient absorption
What gene does pGLO contain that allows bacteria to glow under UV light?
- A. ampicillin-resistance gene
- B. green fluorescent protein (GFP) gene
- C. ribosomal RNA gene
- D. bioluminescence gene
Which of the following is a key step in the transformation process?
- A. Heating the bacteria at 100°C
- B. Mixing bacterial cells with plasmid DNA
- C. Exposing cells to extreme pH
- D. Incubating the cells in sterile water
After transformation, what selection marker is used to identify successful transformants?
- A. Glucose
- B. Amino acids
- C. Ampicillin
- D. Sodium chloride
What is the role of heat shock in the transformation process?
- A. To kill non-transformed cells
- B. To facilitate the uptake of DNA by bacteria
- C. To stimulate gene expression
- D. To increase the activity of cytoplasmic enzymes
What method is used to visualize the GFP in transformed bacteria?
- A. Electrophoresis
- B. UV light exposure
- C. Chromatography
- D. Microscopy with blue light
Which of the following results would indicate a successful transformation?
- A. Growth on ampicillin plates without fluorescence
- B. Growth on ampicillin plates with fluorescence
- C. No growth on ampicillin plates
- D. Fluorescence without bacterial growth
How is the transformation efficiency typically measured?
- A. By weighing the plasmid
- B. By counting the number of glowing colonies
- C. By analyzing the plasmid size
- D. By measuring the pH of the culture
In the presence of arabinose, what happens to the GFP expression?
- A. It is inhibited
- B. It is enhanced
- C. It is abolished
- D. It remains unchanged
What is the optimum temperature for the incubation of transformed E. coli?
- A. 25°C
- B. 37°C
- C. 50°C
- D. 60°C
What is one method for introducing the pGLO plasmid into E. coli?
- A. Electroporation
- B. Filtration
- C. Centrifugation
- D. Boiling
Which condition is NOT favorable for bacterial transformation?
- A. Phosphate buffer
- B. Cold temperatures
- C. High temperature
- D. Calcium chloride presence
What does successful uptake of the pGLO plasmid allow bacteria to do?
- A. Produce insulin
- B. Show bioluminescence
- C. Overcome antibiotic resistance
- D. Synthesize green fluorescent protein
To what group of organisms does E. coli belong?
- A. Eukaryotes
- B. Archaea
- C. Bacteria
- D. Viruses
What part of the bacterial transformation process do plasmids serve?
- A. They serve as enzymes
- B. They act as vehicles for gene transfer
- C. They provide a food source
- D. They localize the genome
Which laboratory technique is essential for confirming that the bacteria contain the pGLO plasmid?
- A. PCR (Polymerase Chain Reaction)
- B. Western Blot
- C. DNA sequencing
- D. Gel electrophoresis
DNA that can be transferred from one organism to another is referred to as:
- A. RNA
- B. Chromosome
- C. Recombinant DNA
- D. Intron
The ultimate goal of the pGLO experiment is to:
- A. Observe natural bacterial behavior
- B. Study bacterial genetic material
- C. Teach genetic engineering techniques
- D. Create antibiotic-resistant bacteria
What is the function of the araC gene in the pGLO plasmid?
- A. Provides antibiotic resistance
- B. Regulates the expression of the GFP gene
- C. Encodes ribosomal RNA
- D. Facilitates DNA replication
How does the presence of arabinose affect the araC protein activity?
- A. It becomes repressive
- B. It promotes expression of GFP
- C. It has no effect
- D. It destabilizes the plasmid
When E. coli is cultured on LB/ampicillin plates with pGLO without arabinose, what would you expect?
- A. Growth and fluorescence
- B. No growth and no fluorescence
- C. Growth and no fluorescence
- D. Death of all cells
Which of the following is NOT a characteristic of plasmids?
- A. They can replicate independently
- B. They are linear
- C. They can carry genes for antibiotic resistance
- D. They are circular in shape
When observing glowing colonies, what wavelength of UV light is typically used?
- A. 280 nm
- B. 300 nm
- C. 365 nm
- D. 400 nm
The component that increases the permeability of the bacterial cell membrane for transformation is:
- A. Calcium chloride
- B. Potassium chloride
- C. Sodium citrate
- D. Magnesium sulfate
What type of genetic material is pGLO?
- A. Chromosomal DNA
- B. Linear DNA
- C. Plasmid DNA
- D. Viral RNA
What happens to non-transformed E. coli when cultured on LB/ampicillin plates?
- A. They survive and thrive
- B. They grow but do not fluoresce
- C. They die
- D. They fluoresce brightly
Which step follows the heat shock in the transformation protocol?
- A. Incubation on ice
- B. Plating on selective media
- C. Addition of arabinose
- D. Exposure to UV light
Which scientific field primarily benefits from experiments like the pGLO transformation?
- A. Ecology
- B. Molecular biology
- C. Astronomy
- D. Environmental science

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Which subject	Biology
What age group	Year or Grade 11
What topic	pGLO bacterial transformation
Question types	Mixed
Number of questions	30
Number of answers	4
Correct answers	Exactly 1
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