Which of the following statements about nucleic acids is not correct?
◦ RNA strands are synthesized in the 3' to 5' direction.
◦ Unlike DNA, RNA is easily cleaved because the 2'-OH group of the ribose is a nucleophile that catalyzes hydrolysis of the strand.
◦ The growing DNA polymer is synthesized in the 5' to 3' direction.
◦ In DNA the distance between the strands of the double helix is relatively constant.
◦ The enzymes that catalyze DNA synthesis are known as DNA polymerases.