DNA is constructed ofGroup of answer choicesa single strand of nucleotides with internal hydrogen bonding.two complementary strands of nucleotides bonded A—C and G—T.two strands of nucleotides running antiparallel.two strands of identical nucleotides with hydrogen bonds between them.None of the answers is correct.

In DNA, Thymine and Adenine on two complementary strands are bonded together by ___________Group of answer choicesTwo Hydrogen bondsS-S covalent bondsThree Hydrogen bondsFour Hydrogen bonds

The two strands of DNA are held together by __________Group of answer choiceshydrogen bondspeptide bondsnitrogen bondsglycosidic linkage

Which of the following is not true of all naturally occurring DNA? A. Deoxyribose units are connected by 3',5'-phosphodiester bonds. B. The ratio A+T/G+C is constant for all natural DNAs. C. Two hydrogen bonds form between A and T. D. The two complementary strands are antiparallel. E. The amount of A always equals the amount of T.

Strands of DNA are joined byMultiple Choicehydrogen bonds.covalent bonds.ionic bonds.phosphodiester bonds.

When pairing with a DNA molecule, C always pairs with _____.Group of answer choicesGTAUCNext