IS MY FINAL EXAM I NEED HELP! The base pairs in a DNA strand are held together with hydrogen bonds. In what way would a cell be most affected if these were covalent bonds Instead?

A) The cell would need to make new DNA each time the strand was opened

B) The cell would only be able to open and close the DNA strand when it replicated.

C)The would have to take in and use more energy in order to break the covalent bonds.

D)The cell would need to replace the nitrogenous bases each time the DNA strand opened. d

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.