Multiple choice Protein synthesis in an animal cell occurs in ribosomes present in cytoplasm as well as in mitochondria in ribosomes present in the nucleolus as well as in cytoplasm only in ribosomes attached to the nuclear envelope and endoplasmic reticulum only in the ribosomes present in cytosol Reveal answer Fill a bubble to check yourself A Correct answer Explanation Protein synthesis in an animal cell occurs in ribosomes present in cytoplasm as well as in mitochondria.