Answer the following question given this paragraph: 

Myoglobin, a protein that stores oxygen in muscle cells, has been purified from a number of organisms. The protein from a sperm whale is composed of 153 amino acid units. What is the minimum number of nucleotides that must be present in the mRNA that codes for this protein?.


Q: Which protein, that stores oxygen in muscle cells, has been purified from a number of organisms?

 Choices:

- melanin

- potassium

- iodine

- myoglobin

A:
myoglobin
