Answer:
The water should not be pink/purple because water should test negative for protein.
The water should actually have turned blue, because Biuret solution is blue.
Someone may have mislabeled the test tube with water
The water may have been contaminated with a protein.
Explanation:
Can you include the data with your question? So we can help you
The answer is C :)
D. an air mass
I think it's chromosome.
A chromosome looks roughly like an X, but it does not maintain it's form. IT floats around and stuff. That's why I think it's chromosome.
