MDCAT Biology MCQ #1199

What is a characteristic of DNA ligase used in genetic engineering?

MDCAT Biology MCQ #1199

  1. Question 1

    Q1. What is a characteristic of DNA ligase used in genetic engineering?

    • A) It requires a template
    • B) It seals nicks in double-stranded DNA
    • C) It is specific to blunt ends
    • D) It requires ATP or NAD+ as a cofactor

    Answer: It requires ATP or NAD+ as a cofactor

    Explanation: DNA ligase requires ATP (or NAD+ in some cases) to form a phosphodiester bond; It seals nicks, not just specific to blunt ends.