If the base pairs in a dna strand were held together with covalent bonds instead of hydrogen bonds, how would cells have to operate differently? a) new dna would need to be made each time the strand was opened. b) the cell would have to take in and use more energy in order to break the covalent bonds. c) each time the dna strand opened the cell would need to replace the nitrogenous bases. d) the cell could only open and close the dna strand when it replicated.

Osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? view available hint(s)osmosis is often viewed incorrectly as a process driven directly by differences in solute concentration across a selectively permeable membrane. what really drives osmosis? the first law of thermodynamicsthe difference in the height of water columns on either side of a selectively permeable membranethe difference in water concentration across a selectively permeable membranethe difference in sugar or ion concentration across a selectively permeable membrane