Scientists have found a gene in the DNA of a certain plant that could be
the key to increasing the amount of lycopene, a cancer-fighting substance,
in tomatoes. To insert this gene into bacteria, scientists would need to use:

A) radiation to increase the gene mutation rate of the bacterial cells

B) hereditary information located in amino acids

C) enzymes to cut out and insert the gene

D) cancer cells to promote rapid cell division

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.