Utilizing Restriction Enzymes

The video explains the role of restriction enzymes in molecular genetics, focusing on their use in creating recombinant DNA. It details the process of genetically modifying bacteria to produce human insulin, starting from isolating insulin-producing cells from the human pancreas, extracting and splicing the insulin gene into bacterial plasmid DNA, and transforming the bacteria. The transformed bacteria reproduce rapidly, producing insulin that can be extracted and purified for diabetes treatment.

What is one of the primary uses of restriction enzymes in research laboratories?

• To measure the speed of chemical reactions

• To determine the age of fossils

• To analyze protein structures

• To construct recombinant DNA molecules

What is the first step in creating a genetically modified bacterium to produce insulin?

• Introducing recombinant DNA into bacterial cells

• Purifying insulin from bacteria

• Isolating insulin-producing cells from the human pancreas

• Extracting plasmid DNA from bacteria

Which enzyme is used to splice the human proinsulin gene into bacterial DNA?

• RNA ligase

• DNA ligase

• DNA polymerase

• Helicase

What happens to bacteria after they are transformed with the human insulin gene?

• They become resistant to antibiotics

• They produce human insulin

• They stop reproducing

• They change color

How often do the genetically modified bacteria divide?

• Every 20 minutes

• Every 30 minutes

• Every 5 minutes

• Every 10 minutes