How do i answer this? i don't understand it.

So the answer for (a) is basically the enzyme is breaking down the protein (which is the colored part) and this leaves the clear.

For the constants it would be the film and the temperature that the solution is at

For the final question, they could be improved by using more data and multiple trials

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

yes we can.   a lady urinates from her urethra.