Nicotine is only one of the many toxic chemicals
inhaled while smoking. what effect can such
toxic chemicals have on the body?
(1) they stimulate an increase in height.
(2) they stimulate uncontrolled cell division.
(3) they eliminate carbon dioxide from cells.
(4) they eliminate chromosomes from many cells.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.