Which statement best describes how materials move naturally? a. materials move from an area of high concentration to an area of lower concentration, or down the concentration gradient. b. materials move from an area of low concentration to an area of higher concentration, or up the concentration gradient. c. water is the only substance that can move down a concentration gradient. d. materials require energy to move up & a down their concentration gradients.
Answers: 1
Biology, 21.06.2019 16:30, lucylubugg
Which of these is not a function of some membrane proteins ? a. allowing polar molecules to enter the cell b. recognizing other types of cells c. receiving messeges from other cells b. carrying messages to oher cells
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Biology, 21.06.2019 22:40, mkingston1705
Which sequence correctly shows the path of carbon dioxide during repiration?
Answers: 1
Which statement best describes how materials move naturally? a. materials move from an area of high...
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