Front

What is the purpose of PCR?

Back

The purpose of PCR (Polymerase Chain Reaction) is to amplify or copy DNA, making millions or billions of copies of a specific DNA segment.

Front

What tool should biologists use to create additional copies of a DNA fragment?

Back

Biologists should use PCR (Polymerase Chain Reaction) to create additional copies of a DNA fragment.

Front

What does PCR analysis do?

Back

PCR analysis is a technique used to make many copies (millions or billions) of a particular region of DNA.

Tags

NGSS.HS-LS3-2

Front

Why do DNA fragments travel away from the negative electrode in gel electrophoresis?

Back

DNA is negatively charged, so it is attracted to the positive end of the gel electrophoresis unit.

Front

What is a restriction enzyme?

Back

A restriction enzyme is a special protein that targets a specific base sequence and cuts DNA into smaller fragments.

Front

What is gel electrophoresis used for?

Back

Gel electrophoresis is used to separate DNA fragments based on their size by applying an electric current.

Front

What is the role of agarose gel in gel electrophoresis?

Back

Agarose gel acts as a medium through which DNA fragments can move; smaller fragments move faster than larger ones.

Front

What is the significance of DNA amplification in forensic science?

Back

DNA amplification is crucial in forensic science as it allows for the analysis of small or degraded DNA samples.

Front

What is the difference between PCR and gel electrophoresis?

Back

PCR is used to amplify DNA, while gel electrophoresis is used to separate and analyze the amplified DNA fragments.

Front

What is the function of DNA polymerase in PCR?

Back

DNA polymerase is an enzyme that synthesizes new DNA strands by adding nucleotides to the growing DNA chain during PCR.