7. According to current knowledge of microorganisms, which of the following statements is CORRECT?
(A) All bacteria have a cell wall.
(B) All viruses use DNA as their genetic material.
(C) All algae contain chloroplasts.
(D) All fungal cell membranes contain cholesterol.
(E) All parasites have a nucleus.

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統計: A(1), B(0), C(0), D(1), E(1) #3847723