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6. Which 3 parts make up a nucleotide?

  • Carbon, hydrogen and a nitrogenous base
  • A sulphur group and a hexose
  • A phosphate group, a pentose, and a nitrogenous base
  • A phosphate group and a hexose

7. Which sugar is present in RNA

  • Ribose
  • Deoxyribose

8. Which are pyrimidines?

  • Guanine, thymine and cytosine
  • Cytosine, thymine, uracil
  • Adenine and guanine
  • Cytosine and adenine

9. What is a phosphodiester bond?

  • The linkage between the 3' carbon atom of one sugar molecule and the 5' carbon atom of another
  • The linkage between the 3' carbon atom of one sugar molecule and the 6' of another
  • The bond between two carboxyl groups
  • The linkage between two nucleotides

10. How many forms does RNA have?

  • 2, cRNA and tRNA
  • 3, tRNA, rRNA and oRNA
  • 3, mRNA, tRNA and rRNA
  • 4, mRNA, tRNA and cRNA

11. Which are purines?

  • Guanine, thymine and uracil
  • Thymine and cytosine
  • Adenine and guanine
  • Adenine and cytosine

12. What is the function of a nitrogenous base?

  • To bond nucleic acids together
  • To bond nucleotides together
  • To make up DNA
  • To make up RNA

13. Which is a double strand of nucleotides?

  • DNA
  • RNA

14. Which is bigger, DNA or RNA?

  • DNA
  • RNA