Question

why viruses and cyanobacteria the exception of Cell Theory??

Answer 1

Hey Mate here is your answer- As cell theory did not account viruses or organelles

Answer 2

Answer:  

Viruses are an exception to the cell theory because they cannot generate energy on their own and also a virus cell cannot replicate without the help of a host cell and cyanobacteria are an exception to ‘cell theory’ because they do not have a prominent nucleus.

Explanation:  

The cell theory was coined by Schleiden and Schwann, according to the cell theory every cell arises from a pre-existing cell and it was slightly modified to give the ‘modern cell theory’.