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

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

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

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.

When pairing with a DNA molecule, A always pairs with _____.Group of answer choicesUTCAGNext

The 3’ end of a DNA strand is the end with the _____.Group of answer choiceshydroxyl groupphosphate groupNext