This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Which of the following do not have ribosomes for protein synthesis 
Select and explain. 
A. Bacteria, B. Viruses, C. Fungi, D. Rickettsia
B: Viruses
Answer: B: Viruses 
Explanation: Bacteria doesn&;t have complex organelles but ribosomes are present in 30, 50 and 80S. Fungi have all organelle as it is a eukaryotic cell.