Contain structures that regulate and perform life functions.
The reason why stars does not die when it is there time is because they tend to fuse in different and more heavier elements. In that way, it prevents them from dying for they were able to have the components of different elements, extending their lives and prevent themselves from dying on the time that they were supposed to.
If a p53 gene is defective it may cause cell cycle to stop functioning normally. Without this cell cycle check, cells will divide continuosly creating many chromosomal damage.
Answer:
d
Explanation:
as a result of accumulation of waste products in the body , these substances are removed from the body via the skin hence they undergo cellular respiration
