I want to know the answer to the following question:
What are the exceptions of non-internal membrane bacteria?
All the background I'm provided with is that "The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures.". Is that enough to answer the question?
Answer: yes