Question

The structure below represents a NH2 N N N N НО. OH A) nucleic acid B) nucleoside. C) glycoside. D) nucleotide. E) riboside.
The structural arrangement of DNA is A) -ribose---phosphate-ribose---phosphate — 1 base base B) -ribose -phosphate-ribose-pho
The heterocyclic compounds adenine (A) and thymine (T) form base pairs in DNA via how many hydrogen bonds? NH2 Hz N N N N o
What structural units are present in a nucleoside? A) a sugar B) a base C) a phosphate D) a and b E) all of these
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Answer #1
  • A nucleoside consists of a pentose sugar to which a nitrogen base is attached by a glycosidic bond.
  • option E

он он го —p=0 “O-P=0 1 о-сна о-сна base base н OH н о H OH о-во т осна casa Q-P=0 O-CH2 1 tes H он H H он Н

  • 3 bonds

Adenine - Thymine н NH CH, ----HAN H H -N o H

  • sugar and base

NH2 N N N НО. ОН​​​​​​​

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