AP BIOLOGY

Detailed explanation-1: -When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.

Detailed explanation-2: -Solution : The cells of the injured tissue start dividing and increase in numbers to repair and heal the injured tissue.

Detailed explanation-3: -Gene Transmission in Mitosis This works well for replacing damaged tissue or for growth and expansion from an embryonic state. Because the genes contained in the duplicate chromosomes are transferred to each successive cellular generation, all mitotic progeny are genetically similar.

Detailed explanation-4: -When the cells undergo oriented mitotic division to repair the wound by natural process, the impaired skin can complete perfect repair; and when the cell division orientation is random, there will form fibre hyperplasia, abnormal tissue structure and eventually lead to scar formation.

Detailed explanation-5: -One of the main actions in the tissue repair script is cell proliferation. In order to heal after injury-whether by regeneration or scarring-cells must enter and progress through the cell cycle, a tightly-regulated process that consists of two main activities: DNA replication and mitosis.