Topic 1b- MORE BIOLOGICAL MOLECULES- DNA and RNA Flashcards
1
Q
Name the bases in RNA.
A
Adenine, cytosine, uracil, and guanine.
2
Q
Describe how nucleotides are joined together in DNA.
A
Nucleotides are joined between the phosphate group of one nucleotide and the deoxyribose sugar of the next by phosphodiester bonds in a condensation reaction.
3
Q
Describe how two single polynucleotide strands are joined to make a double helix.
A
Two polynucleotide strands join through hydrogen bonding between the base pairs. Base pairing is complementary. The two antiparallel polynucleotide strands twist to form a DNA double helix.
