Question

question 19
what is a chain of amino acids called?
a protein
b rrna
c dna
d mrna

Explanation:

To determine the answer, we recall biological concepts: A chain of amino acids forms a protein. RNA (ribonucleic acid), DNA (deoxyribonucleic acid), and the misspelled "nsluna" (likely a typo) are nucleic acids or incorrect terms, not amino acid chains. So the correct option is the one labeled with "Protein".

Answer:

a. Protein