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
Prokaryote among the following is? 
Select and explain. 
A. Bacteria, B. Mycoplasma, C. Fungi, D. Blue green algae
A: Bacteria
Answer: A: Bacteria 
Explanation: Based on differences in cellular organisation and biochemistry this kingdom has been divided into two groups: prokaryotes and eukaryotes. Bacteria and blue-green algae are prokaryotes while fungi, other algae, slime moulds and protozoa are eukaryotes. Bacteria are prokaryotic microorganisms that do not contain chlorophyll. They are unicellular and do not show true branching except in the so-called higher bacteria (Actinomycetes). Ref: Textbook of Microbiology; Ananthanarayan and Paniker; 9th edition.