An indicator for a protein is added to a solution that contains protein and to a solution that does

not contain protein. State one way, other than the

presence or absence of protein, that the two

solutions may differ after the indicator has been

added to both. [1]

There would be a color change

Explanation:

Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple.

Since one of the solutions does not contain protein, the blue color of the Biuret reagent will not change.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.