Laying the Groundwork: Levene Investigates the Structure of DNA Meanwhile ... a single nucleotide (phosphate-sugar-base); the first to discover the carbohydrate component of RNA (ribose); the ...

Adjacent ribose nucleotide bases are chemically attached to one another in a chain via chemical bonds called phosphodiester bonds. Unlike DNA, RNA is usually single-stranded. Additionally ...

During DNA replication ... correct base pairing with thymine or uracil, as it allows the formation of hydrogen bonds between the complementary bases. ATP is the primary energy currency in living cells ...