|2 Login | UMGC X U Week 2 Discussions - BIOL 161 63 X Chemical Composition of Cells - T X Question 2 - Week 2: Chemistry o X Course Hero x | + X C @ https://ezto.mheducation.com/ext/map/index.html?_con=conexternal_browser=0launchUrl=https%253A%252F%252Fconnect.mheducation.com%252Fconnect%252Fltiwrapper%252FltiaCloseWi... ... Week 2: Chemistry of Cells Post Lab Quiz i Saved Help Save Exit Submit 2 When biuret reagent is added to a solution containing protein, the solution turns pink or purple. In the absence of protein, the solution is blue. Biuret reagent was added to solutions that may or may not contain protein. The data can be seen in the table below. What is the independent variable in this experiment? Tube Result Blue Blue 00:57:32 Blue Purple Multiple Choice O the pH of the solution O whether or not biuret reagent is added to the solution O the color change from blue to purple O the contents of the unknown solution Mc Graw Finance headline 7:36 PM Japan's June tra... Q Quick search 8/23/2025