The organisms that have silicious cell walls and can produce domoic toxinsGroup of answer choicesSpirogyraDiatomsDinoflagellatesChlamydomonasCyanobacteriaNext

All bacteria have cell wall?

Bacteria and Archaea, both have cell walls.FalseTrue

Which of the following lacks a cell wall?Group of answer choicesClostridiumMycobacteriumVibrioNocardiaMycoplasma

All of the following organisms produce exotoxins EXCEPTGroup of answer choicesCorynebacterium diphtheriae.Clostridium tetani.Salmonella typhi.Staphylococcus aureus.Clostridium botulinum.

Which of the following is not a structure found in prokaryotic cells?Group of answer choicesPiliAxial filamentFlagellaPeritrichous flagellaCilia