Urgent what characteristic do all protists have in common? flagella that them move structures made of many cells cell nuclei that contain dna ability to make their own food

I’m stuck on this question cuz i’m stupid sksksksk

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

2polnis which of the following is an advantage of an in vitro experiment?me