19. cells are the building blocks of life. cell division is usually a controlled and standard process. what could happen if cell division became uncontrolled (or abnormal)? watch this video and explain the effects of unregulated (or abnormal) cellular processes on the body

Cell division is a highly regulated process in which a parent cell divides into two daughter cells. It is responsible for the growth and development of an organism. It is controlled by different genes that control cellular growth. If this regulation is lost, it leads to cancer which is basically an uncontrolled cell division.

Cancer cells arise as a result of gene mutations leading to uncontrolled division. They grow rapidly, with abnormal morphology and very poor differentiation. They are insensitive to growth inhibitor signals and also lack a programmed cell death. As a result a mass of cells called the tumor arises which can be benign or malignant.

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.

answer; ///(b) it is composed of four protein chains and four heme groups;