Question 1

Which direction do DNA fragments move during gel electrophoresis?

Accepted Answer

Toward the positive electrode

Answer

Toward the negative electrode

Answer

In a random direction

Answer

They don't move

Question 2

Which type of gel is commonly used in gel electrophoresis?

Accepted Answer

Agarose gel

Answer

Polyacrylamide gel

Answer

Sodium chloride gel

Answer

DNA gel

Question 3

What is gel electrophoresis used for?

Accepted Answer

Separating and analyzing DNA fragments

Answer

Creating DNA molecules

Answer

Amplifying DNA fragments

Answer

Storing DNA samples

Question 4

Which electrode is the DNA typically loaded onto during gel electrophoresis?

Accepted Answer

Negative electrode

Answer

No electrode

Answer

Positive electrode

Answer

Both positive and negative electrodes

Question 5

What does PCR stand for?

Accepted Answer

Polymerase Chain Reaction

Answer

Protein Chain Reaction

Answer

Polymeric Coating Reaction

Answer

Purine-Contains Reaction

Question 6

What is the purpose of the denaturation step in a PCR reaction?

Accepted Answer

To separate the DNA strands

Answer

To amplify the DNA

Answer

To add primers

Answer

To cool down the reaction

Question 7

What is the role of primers in a PCR reaction?

Accepted Answer

To initiate DNA synthesis

Answer

To cool down the reaction

Answer

To separate the DNA strands

Answer

To amplify the DNA

Question 8

What is the ideal temperature for annealing in a PCR reaction?

Accepted Answer

Between 50°C and 65°C

Answer

Room temperature

Answer

Above 70°C

Answer

Below 40°C

Question 9

What is the purpose of the extension step in a PCR reaction?

Accepted Answer

To synthesize new DNA strands

Answer

To separate the DNA strands

Answer

To amplify the DNA

Answer

To add primers

Question 10

Which enzyme is commonly used in PCR?

Accepted Answer

Taq polymerase

Answer

RNA polymerase

Answer

Reverse transcriptase

Answer

DNA ligase

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