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y Bookmarks Window Help canopy.uc.edu Question Completion Status: QUESTION 1 A scientist is trying to increase the number of cells grown in the lab. After giving 3 different treatments, she obtained the results presented in the table below. Percent survival of cell cultures Cell Type HeLa* Stem Kidney T cells Treatment A 79% 56% 18% 22% Treatment B 25% 18% 9% 22% Treatment C 81% 22% Hela cells come from an immortal human cancer cell line. They were taken from a patient Ms. Henriesta Lacks, in 1951 and have been continuously grown for research to this day. Ms. Lacks cells have been credited with helping find a cure for polio as well as becoming.an effective model to study tand hopefully cure) cancer What one of the following represents possible dependent and independent variables for the investigation in this scenario? O a, D-cell type; N> percent survival of cell cultures O b. Dv-treatment rv-cell type Og D-treatment; -percent survival of cell cultures d. DV-cell type: rv-treatment O e, DV-percent survival of cell cultures; -treatment QUESTION 2 Over a period of 10 days a student measures the average growth of three similar plants grown in three differentlighting conditions Save All Answers Click Sove and Submit to save and submit Click Save All Answers to save all answers

Explanation / Answer

The correct answer is e) DV = percent survival of cell cultures ; IV = treatment. Because percent survival of cell cultures changes depending on the type of treatment and also on what type of cell it is. But type of treatment or cells can be changed without any dependency.

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