The 5' end of a DNA strand is characterized by which group?

Master the DAT Bootcamp Molecules and Fundamentals of Biology Test with our comprehensive quiz. Unlock thorough understanding with flashcards, meticulous explanations, and ample practice questions. Gear up for success in your exam journey!

Multiple Choice

The 5' end of a DNA strand is characterized by which group?

Explanation:
DNA strands have directionality defined by how the sugars are numbered. Each nucleotide has a 5' phosphate and a 3' hydroxyl, and nucleotides are connected by phosphodiester bonds between the 5' phosphate of one nucleotide and the 3' hydroxyl of the next. The end that is designated 5' carries a free phosphate group because its phosphate isn’t linked to a previous sugar. The 3' end, on the other hand, has a free hydroxyl group on the sugar. So, the group that characterizes the 5' end is the phosphate group.

DNA strands have directionality defined by how the sugars are numbered. Each nucleotide has a 5' phosphate and a 3' hydroxyl, and nucleotides are connected by phosphodiester bonds between the 5' phosphate of one nucleotide and the 3' hydroxyl of the next. The end that is designated 5' carries a free phosphate group because its phosphate isn’t linked to a previous sugar. The 3' end, on the other hand, has a free hydroxyl group on the sugar. So, the group that characterizes the 5' end is the phosphate group.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy