WorksheetsBiotechnology
Total questions: 19
Worksheet time: 12mins
What is the purpose of restriction enzymes?
To join fragments of DNA
To cut DNA at specific recognition sites
To amplify DNA sequences
To separate DNA fragments according to size
What is the function of DNA ligase?
To join fragments of DNA
To cut DNA at specific recognition sites
To amplify DNA sequences
To separate DNA fragments according to size
What is the function of a plasmid in DNA cloning?
Amplifying DNA segments
Cutting DNA at specific sites
Ligating DNA fragments
Serving as a vector to carry DNA into host cells
What is the term for the resulting DNA molecule when two different DNA fragments are joined together in DNA cloning?
Recombinant DNA
Replicated DNA
Amplified DNA
Mutated DNA
What is the purpose of bacterial transformation in DNA cloning?
To cut and paste DNA fragments
To amplify DNA sequences
To join fragments of DNA
To introduce foreign DNA into bacteria
What is the goal of PCR?
To cut DNA at specific recognition sites
To join fragments of DNA
To amplify a specific DNA region
To separate DNA fragments according to size
What is denaturation in the PCR process?
The cooling of the reaction mixture
The separation of DNA strands by heating
The addition of primers to the reaction
The final step in PCR amplification
What is the typical temperature range for the denaturation step in PCR?
37-42°C
50-60°C
72-75°C
90-95°C
What is the purpose of the extension step in PCR?
To separate DNA strands
To cool the reaction mixture
To synthesize new DNA strands
To add primers to the reaction
How many cycles of denaturation, annealing, and extension are typically performed in a PCR reaction?
1 cycle
5 cycles
20-40 cycles
90-100 cycles
What is the purpose of gel electrophoresis?
To cut DNA at specific recognition sites
To join fragments of DNA
To amplify DNA sequences
To separate DNA fragments according to size
DNA is negatively charged and attracted to the positive end of the unit
DNA is positively charged and attracted to the negative end of the unit
the agarose gel is negatively charged
Which RE's from above make blunt cuts?
Alul
HaeIII
BamHI
HindIII
EcorRI
Which RE's from above make sticky cuts?
Alul
HaeIII
BamHI
HindIII
EcorRI
Which of the following is NOT a component of a DNA sequencing reaction?
DNA template
DNA polymerase
Dideoxynucleotides (ddNTPs)
Deoxynucleotides (dNTPs)
Radioactive isotopes
What is the role of dideoxynucleotides (ddNTPs) in DNA sequencing?
They initiate DNA synthesis
They terminate DNA synthesis at specific bases
They elongate the DNA strands
They repair DNA damage
