Multiple choice

Which of the following is true?

  1. Eukaryotic cells contain 70S ribosomes

  2. Eukaryotic cells contain 80S ribosomes

  3. Prokaryotic cells do not contain ribosomes

  4. Prokaryotic cells contain 80S ribosomes

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Eukaryotic cells contain larger 80S ribosomes in their cytoplasm and on the rough endoplasmic reticulum, whereas prokaryotic cells contain smaller 70S ribosomes. Although eukaryotic organelles like mitochondria and chloroplasts contain 70S ribosomes, 80S ribosomes are the defining cytoplasmic ribosomes of eukaryotes.