A student is given five samples and told they are lysine (an amino acid), lactose (a disaccharide), insulin (a protein hormone), RNA and fat. The samples are in test tubes marked 1-5, but the student doesn’t know which compound is in which tube. The student is instructed to identify the contents of each tube.

In her first test, she tries to hydrolyze a portion of the contents of each tube. Hydrolysis occurs in all tubes except tube 5.

In the next test, she finds that tubes 3, 4, and 5 are positive for nitrogen but only tube 3 gives a positive result for the presence of sulfur.

In the next test the student shows that the compound in tube 4 contains a high percentage of phosphate.

In the final test the student shows that compound 1 is hydrophobic.

Base on these data, identify what is in each tube.

Group of answer choices
1

[ Choose ]
2

[ Choose ]
3

[ Choose ]
4

[ Choose ]


[ Choose ]