A Biuret test was performed as shown below, [A] What solution (not which tube) will you use as a negative control?

[B] If you were testing glycine (an amino acid) solution, which tube represents the correct result?

[C] Which tube stands for albumin (a protein) solution?

i think could be A or B

Explanation:

sorry I am wrong

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave