You might need to provide a bit more information about the checklist.
In general if the subject of a question is non-applicable then it's non-applicable, but the "no" ones are a bit more context-dependent. For example, no would be a slightly disconcerting answer to "is there anything to prevent random people walking in off the street and adulterating our products?", but would be the "right" answer for "In the past 12 months, have there been any instances of people gaining unauthorised access to facilities and/or products?".
Some of these may therefore indicate areas that you possibly need to look at improving / changing, but again that depends entirely on the nature and context of the questionGo to the full post