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OpenStudy (anonymous):
19. Which of the following is NOT an example of materials that naturally cross the semi-permeable barrier of the cell membrane? A. nutrients enter the cell B. waste products exit the cell C. oxygen enters the cell D. mutated genetic waste exits the cell
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OpenStudy (leonardo0430):
b - waste
OpenStudy (anonymous):
Thanks Leonardo!!
OpenStudy (leonardo0430):
no problem :D
OpenStudy (anonymous):
Those 2 are the only ones I needed! I do believe I have the others answered correctly, google wasn't helping :s.. but yet again THANKS. I've never used this site before... but I do believe I will start!!
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