A student carried out four tests for biological molecules on a solution. The observations are
shown in the table.
test for biological molecules
|
Observation
|
iodine solution
|
Orange
|
biuret
|
Purple
|
Benedict’s
|
Orange
|
emulsion
|
Cloudy
|
Which molecules may be present in this solution?
A glucose, starch, protein
B lipid, protein, glucose
C protein, starch, sucrose
D starch, protein, lipid