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Nucleic Acid Chemistry and DNA Structure

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Nucleic Acid Chemistry and DNA Structure

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Questions and Answers

What are nucleotides composed of?

Ribonucleotide, deoxyribonucleotide, and phosphate group

Purines, pyrimidines, and nucleic acid

RNA, DNA, and pentose sugar

Nitrogenous base, pentose sugar, and phosphate group (correct)

What are the two chemically distinct types of nucleic acids?

Ribonucleotide and deoxyribonucleotide (correct)

Pentose sugar and phosphate group

Purines and pyrimidines

Ribose and deoxyribose

Which atoms of the sugar can phosphates be bonded to?

C1 or C4

C3 or C5 (correct)

C2 or C6

C1 or C5

What is the function of nucleic acids in living organisms?

Storage and expression of genetic information Signup and view all the answers

Which type of nucleic acid is a polymer of ribonucleotide?

RNA Signup and view all the answers

What are the components of a nucleotide?

Pentose sugar, nitrogenous base, phosphate group Signup and view all the answers

What results from linking one of the sugars with a Purine or Pyrimidine base through an N-glycosidic linkage?

Nucleosides Signup and view all the answers

What is responsible for the negative charges associated with nucleotides?

The phosphate groups Signup and view all the answers

What is the primary structure of DNA determined by?

Phosphodiester bonds Signup and view all the answers

What is responsible for the double helix structure of DNA?

Hydrogen bonds between bases Signup and view all the answers

Which nitrogenous base pairs with thymine in RNA?

Uracil Signup and view all the answers

In what manner are the chains in the double helix of DNA paired?

Antiparallel Signup and view all the answers

Which molecules exist as a single strand of nucleotides?