13. How many nucleotides are required to code for a single amino acid?
A. twenty
B. five
C. three
D. one

14. The combination of a sugar, a base and at least one phosphate group is given thegeneral term of:
A. nucleoside
B. amino acid
C. polypeptide
D. nucleotide

15. The nucleus of the cell contains the master nucleic acid:
A. DNA
B. RNA
C. mRNA
D. tRNA

16. Which of the following is the correct combination of the components for the
nucleic acid DNA?
A. Phosphate, Ribose, Uracil
B. Phosphate, Deoxyribose, Proline
C. Phosphate, Ribose, Thymine
D. Phosphate, Deoxyribose, Adenine