When DNA was synthesized using nucleotides marked with 100% 15N isotope, the entire double strand of DNA contained nitrogen with 15N. When this DNA was cultured with a supply of nucleotides composed of nitrogen that was 100% 14N, as the DNA underwent replication, the daughter DNA was composed of 50% 14N and 50% 15N. What happened next when replication of the 50-50 daughter DNA was cultured with a supply of 100% 14N nucleotides, in terms of the composition of the next generation of DNA? Choose all that apply.

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.