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Nucleic Acid Structure

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10 Questions

What is the primary component of the sugar found in DNA?


Which of the following nitrogenous bases is not found in DNA?


What is the phosphate group's role in nucleotides?

It forms the backbone of the nucleic acid

What is the sugar molecule found in RNA?


What are the building blocks of nucleic acids?


Which of the following statements about the sugar component of nucleotides is true?

The sugar molecule provides a hydrophobic environment for the nitrogenous base

What is the primary function of the phosphate group in nucleotides?

To form a strong covalent bond with the sugar molecule

Which of the following nitrogenous bases is found in both DNA and RNA?


What is the result of the sugar molecule in DNA being deoxyribose?

A less stable nucleotide structure

Which of the following is a characteristic of the nitrogenous base uracil?

It is a pyrimidine base

Study Notes

Nucleic Acids Building Blocks

  • Nucleotides are the building blocks of nucleic acids.
  • A nucleotide is composed of three components:
    • A sugar molecule (deoxyribose in DNA and ribose in RNA)
    • A phosphate group
    • A nitrogenous base

Nitrogenous Bases

  • There are five nitrogenous bases in nucleic acids:
    • Adenine (A)
    • Thymine (T) or Uracil (U)
    • Cytosine (C)
    • Guanine (G)

Discover the fundamental components of DNA and RNA, including the sugar, phosphate group, and nitrogenous bases that make up nucleotides. Learn about the differences between DNA and RNA and their building blocks. Test your understanding of nucleic acid structure!

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