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How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

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.