Which of the following is a vital stain?

In the given hierarchy of biological organization: $(P) \rightarrow \text{Subatomic particles} \rightarrow \text{Atoms} \rightarrow \text{Molecules} \rightarrow (Q) \rightarrow \text{Cells} \rightarrow \text{Tissues}$,what do $(P)$ and $(Q)$ represent respectively?

Identify the mismatched pair:

Choose the correct pair:

Which pair of structures are usually found in both plant and animal cells?

Which of the following pairs lacks a unit membrane?