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
True about Bacteria is 
Select and explain. 
A. Mitochondria are always absent, B. Sterols are always present in cell wall, C. Divide by binary fission, D. Can be seen only under electron microscope
A: Mitochondria are always absent
Answer: A: Mitochondria are always absent 
Explanation: Bacteria are prokaryotic organisms so they don't have mitochondria but instead they'll be having mesosomes. Ref: anantnarayan and panikers 10 th edition