While an organism is developing, a process called "apoptosis", or programmed cell death, leads to past on they selfs of certain cells. An example is in the tail of tadpoles. Once a tadpole is mature enough to turn into a frog, the tail cells receive a "death signal" chemical, and the cell responds by shrinking, breaking up the nucleus, and then being completely destroyed by another frog cell. The chemicals that were within the tail cell are often recycled, and used to build new cells in the main body of the frog. During apoptosis, which cellular organelle does the work of breaking up the nucleus and causing the cell to die? A) ribosome

B) Lysosome

C) mitochondrion

D) Golgi apparatus

(there was a word that was forbidden that I tried to send but I already wrote it)

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.