Answer:
iron
sulfur
phosphorous
zinc
nitrogen
Step-by-step explanation:
Protein can be regarded as a compound composing amino acids. Every amino acid is been composed of elements such as;
✓ carbon
✓ hydrogen
✓oxygen, as well as nitrogen.
Most proteins encompass sulfur.
To identify protein separately,
from fats and carbohydrates, it can be done through the presence of certain elements such as :iron
sulfur
phosphorous
zinc
nitrogen