Question

Which statement about the part of the molecule labeled 3 is correct? Group of answer choices It comes in twenty different varieties It participates in hydrogen bond interactions It is the same for all monomers of this type It forms the backbone of a nucleic acid strand

Answer 1

The statement that is correct about the part of the molecule labeled 3 is: "It forms the backbone of a nucleic acid strand."

Step-by-step explanation:

The statement that is correct about the part of the molecule labeled 3 is: "It forms the backbone of a nucleic acid strand."

In the context of nucleic acids, such as DNA or RNA, the part labeled 3 typically represents the phosphate group. The phosphate group is responsible for forming the backbone of the nucleic acid strand, as it links the sugar molecules (labeled 2 in a nucleotide) together via phosphodiester bonds. The phosphate group is a key structural component of the nucleic acid strand.