DNA Structure and Replication
In DNA, nucleotides are covalently joined together by

2', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain
3', 4' phosphodiester bonds to form a repetitive sugar-phosphate chain
3', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain
2', 3' phosphodiester bonds to form a repetitive sugar-phosphate chain

ANSWER DOWNLOAD EXAMIANS APP

DNA Structure and Replication
The higher order structure of DNA shows symmetry, whereas the higher order structures of most proteins do not. Why isn't protein shape more regular like DNA?

The many different amino acid R groups on proteins confer many different shapes.
DNA has one main function in cells whereas proteins have many.
Some S amino acids cause proteins to bend; others cause protein to flatten.
All of these

ANSWER DOWNLOAD EXAMIANS APP