What does it mean for a hypothesis to be testable?
a. the hypothesis must be what the scientist is hoping is the result.
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b. the hypothesis must be able to be proved true or false.
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c. the hypothesis must be supported by peer review.
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d. the hypothesis must be able to reject biased data.

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.