Amplification of DNA

The video tutorial explains the polymerase chain reaction (PCR), a laboratory process that amplifies DNA. Through repeated heating and cooling with specific enzymes, PCR can increase DNA quantities by a million-fold in a few hours. This technique is crucial in medical and biological research, as well as forensic science, for generating significant DNA amounts from small samples.

What is the primary purpose of the polymerase chain reaction in laboratory settings?

• To sequence RNA

• To amplify DNA sequences

• To synthesize lipids

• To degrade proteins

Which process involves repeated heating and cooling to increase DNA quantity?

• Spectrophotometry

• Polymerase chain reaction

• Gel electrophoresis

• Centrifugation

By how much can the amount of DNA be increased using PCR in a few hours?

• 10,000,000 fold

• 1,000,000 fold

• 100,000 fold

• 10,000 fold

In which fields is PCR widely used to produce useful quantities of DNA?

• Medical and biological research

• Agriculture and meteorology

• Economics and finance

• Astronomy and geology

What is a key application of PCR in forensic science?

• To analyze soil samples

• To measure atmospheric pressure

• To identify chemical compounds

• To produce DNA from small samples