Sentences with phrase «nucleobase molecules»

The basis for this observation is that the genomes of all organisms are written in an «alphabet» that consists of only four nucleobase molecules: adenine (A), thymine (T), guanine (G) and cytosine (C).

Not exact matches

Chemical reactions do slow down as the temperature drops, and according to standard calculations, the reactions that assemble cyanide molecules into amino acids and nucleobases should run a hundred thousand times more slowly at — 112 °F than at room temperature.

Over a quarter - century, the frozen ammonia - cyanide blend had coalesced into the molecules of life: nucleobases, the building blocks of RNA and DNA, and amino acids, the building blocks of proteins.

Martins found the answer by extracting two molecules from the meteorite: uracil, a nucleobase found in RNA, and xanthine, an intermediate in the synthesis of DNA and RNA.

We know that meteorites contain amino acids and even nucleobases, but not whether they scooped up those molecules from dust clouds or created them later, on their interplanetary course.