One strand of a fragment of duplex DNA has the sequence ...

Question

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What enzymes catalyze the reaction in part (d)?

Accepted Answer

Hey, everyone. Let's take a look at this question together which of the following enzymes catalyzes the formation of a phospho dier bond between the hydroxyl group of one nucleotide and the tri phosphate group of an adjacent nucleotide. Is it answer choice. A endonuclease. Answer choice B DNA polymerase answer choice C R N A polymerase or answer choice D none of the above. Let's try to figure out which of the following answer choices is the enzyme that catalyzes the formation of that phospho diceon between the hid roxy group of one nucleotide and the tri phosphate group of another. So, something we know about this enzyme that catalyzes that formation of the phospho dier bond is that the enzyme uses the energy from the hydrolysis of the triphosphate bond. And this process is called phospho dier bond formation. And that process of forming the phospho dier bond is essential for DNA replication. And since it is essential for DNA replication, we know that the enzyme that must be responsible for that formation of the phospho dier bond must be answer choice B DNA polymerase, which is the correct answer because DNA polymerase is the enzyme that catalyzes the formation of a phospho dier bond between the hydroxyl group of one nucleotide and the tri phosphate group of an adjacent nucleotide. And it does this by using the energy from the hydrolysis of that tri phosphate bond, which is a process known as phospho dier bond formation that is essential for DNA replication. So answer choice B is the right answer. And we know that it is not endonuclease because that is the enzyme that breaks down DNA or R N A and not forms them. And R N A polymerase is incorrect since that is the enzyme that catalyzes the transcription of DNA into R N A and not the formation of a phospho dier. So answer choice B is the only correct answer here. I hope you found this video to be helpful. Thank you and goodbye.

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What enzymes catalyze the reaction in part (d)?

Key Concepts

DNA Structure

Enzymes in DNA Replication

Transcription and Translation

Watch next

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.What enzymes catalyze the reaction in part (d)?

Key Concepts

DNA Structure

Enzymes in DNA Replication

Transcription and Translation

Watch next

One strand of a fragment of duplex DNA has the sequence 5'-ATCGACCTGATC-3'.

What enzymes catalyze the reaction in part (d)?