Which enzyme attaches nucleotides to the growing DNA strand?

Study for the Manor Preboards Module 2 Test. Use flashcards and multiple choice questions that include hints and explanations. Prepare thoroughly for your exam!

Multiple Choice

Which enzyme attaches nucleotides to the growing DNA strand?

Explanation:
DNA polymerase is the enzyme that builds the new DNA strand by attaching nucleotides one by one. It reads the template strand and adds complementary nucleotides to the growing strand, forming each phosphodiester bond in the 5' to 3' direction. A primer is required to start synthesis because the growing strand needs a free 3' hydroxyl group to begin adding nucleotides. On the lagging strand, DNA polymerase works in short stretches called Okazaki fragments, with DNA ligase later sealing the gaps. Other enzymes have different roles: helicase unwinds the DNA double helix, primase lays down the RNA primer, and ligase seals nicks after fragments are formed. DNA polymerase is the one responsible for attaching the nucleotides to extend the DNA chain.

DNA polymerase is the enzyme that builds the new DNA strand by attaching nucleotides one by one. It reads the template strand and adds complementary nucleotides to the growing strand, forming each phosphodiester bond in the 5' to 3' direction. A primer is required to start synthesis because the growing strand needs a free 3' hydroxyl group to begin adding nucleotides. On the lagging strand, DNA polymerase works in short stretches called Okazaki fragments, with DNA ligase later sealing the gaps. Other enzymes have different roles: helicase unwinds the DNA double helix, primase lays down the RNA primer, and ligase seals nicks after fragments are formed. DNA polymerase is the one responsible for attaching the nucleotides to extend the DNA chain.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy