Question

research scientists isolate proteins in a ph gradient. separation of protein a, protein b, and protein c in a ph gradient a research scientist attempts to identify all proteins that have a ph level greater than 5.0 in more than one sample. the research scientist selects protein a and protein c. is this correct, and why? a. yes, because protein a has a ph of 5.5 in sample 10. b. yes, because protein a and protein c have more than one sample above a ph of 5.0. c. no, because protein a and protein c have only one sample with a ph above 5.0. d. no, because protein b has no samples that rise higher than a ph of 4.8.

Explanation:

Step1: Analyze Protein A

From the graph, Protein A has a pH of 5.5 in Sample 10 and no other sample with pH above 5.0.

Step2: Analyze Protein C

Protein C has a pH above 5.0 in one sample only (around Sample 7 - 8 area). So both Protein A and Protein C have only one - sample with a pH above 5.0.

Answer:

C. No, because Protein A and Protein C have only one sample with a pH above 5.0.