First place all right; that is the way to the most cell-like (7)

'most cell-like' is the definition.
Both the definition and answer are superlative adjectives. Maybe you can see an association between them that I don't see?

'first place all right that is the way to the' is the wordplay.
'first place' becomes 'p' (1st letter of 'place').
'all right' becomes 'ok' (synonyms).
'that is' becomes 'i.e.' (short for Latin 'id est', 'that is').
'the way' becomes 's' (Compass direction - South).
'to the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'p'+'ok'+'ie'+'s'+'t'='POKIEST'

Can you help me to learn more?