DNA Restriction Enzymes Quiz

• Enzymes that cut DNA are classified into two categories, class I and class II.
• Class I enzymes cut DNA near sites that are able to recognize sequences.
• Class II enzymes cut DNA within recognized sequences.
• Enzymes that restrict DNA replication are among the most commonly used enzymes.
• These enzymes are found in both bacteria and eukaryotes.
• Enzymes of restriction are endogenously produced and do not cut DNA as part of bacterial self-protection.
• Enzymes of restriction have specific three-letter codes that indicate their origin.
• The first enzyme to be used for DNA restriction was EcoRI.

Test your knowledge of DNA restriction enzymes with this quiz covering class I and class II enzymes, their functions, origins, and historical significance in DNA replication.