14 Questions
What are nucleotides composed of?
Nitrogenous base, pentose sugar, and phosphate group
What are the two chemically distinct types of nucleic acids?
Ribonucleotide and deoxyribonucleotide
Which atoms of the sugar can phosphates be bonded to?
C3 or C5
What is the function of nucleic acids in living organisms?
Storage and expression of genetic information
Which type of nucleic acid is a polymer of ribonucleotide?
RNA
What are the components of a nucleotide?
Pentose sugar, nitrogenous base, phosphate group
What results from linking one of the sugars with a Purine or Pyrimidine base through an N-glycosidic linkage?
Nucleosides
What is responsible for the negative charges associated with nucleotides?
The phosphate groups
What is the primary structure of DNA determined by?
Phosphodiester bonds
What is responsible for the double helix structure of DNA?
Hydrogen bonds between bases
Which nitrogenous base pairs with thymine in RNA?
Uracil
In what manner are the chains in the double helix of DNA paired?
Antiparallel
Which molecules exist as a single strand of nucleotides?
RNA
What is connected to the sugar by a low energy bond?
The ester bond
Learn about nucleic acid chemistry and DNA structure with Dr. Noha M. Abd El-Fadeal. This lecture covers the definition of nucleic acid, structure of nucleic acids, the difference between DNA and RNA, formation of DNA double helix, DNA packaging, and types of RNA.
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