which of the following must occur before cell division? check all that apply.

1. the cell creates proteins.

2. the amount of dna increases.

3. damaged cells are removed.

4. the cell increases in size.

I'm pretty sure 2 and 4 occur before cell division and 3 doesn't. I'm iffy about 1 but I'm leaning towards yes. I hope I helped and didn't just sabotage you.

this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.

the answer would be   10%