Question

The bases of a polynucleotide strand project toward the backbone. True or False?

Answer 1

The bases of a polynucleotide strand project toward the backbone. This statement is true.

Step-by-step explanation:

True or False. The bases of a polynucleotide strand project toward the backbone.

True. In a polynucleotide strand, the bases (adenine, guanine, cytosine, and thymine) are attached to the sugar-phosphate backbone. The nitrogenous bases face the inside of the double helix, while the phosphate group forms the backbone on the outside.

Example:

DNA: 3' TCCGGTAACCT 5'

Here, the bases (T, C, G, and A) project towards the phosphate backbone (indicated by the curvy lines).