The bonds or interactions that hold together adjacent nucleotides in the sugar-phosphate backbone of DNA are .The bonds or interactions that hold together complementary bases from opposite strands of DNA are hydrogen bonds. The bonds or interactions between stacked nucleotide units that help hold the DNA molecule together are .

What is the role of fadh2 in cellular respiration

Which is the correct formula for photosynthesis

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.