How does the control of genes relate to homeostasis?

Answer 1

Regulation is when an organism keeps things like body heat, ATP levels, Glucose levels, etc, in a correct, regulated balance. Without regulation homeostasis, which is when the entire body is in balance, where everything is just right. Without regulation things will go out of balance. Say our red blood cells were not regulated correctly, if you make too many or too little, it can cause very serious problems, even death. So, regulation is what causes Homeostasis, without regulation of our internal systems our bodies would not be able to function.

Answer 2

Homeostasis is regulated by proteins produced by the cell. For example, acidity is regulated by regulated by specific chemical buffers.

The cell decides which proteins it makes through regulating gene expression. Ie. deciding which parts of DNA it should be expressing as proteins.

Answer 3

A variety of genes are involved in the control of cell growth and division. The cell cycle is the cell's way of replicating itself in an organized, step-by-step fashion. Tight regulation of this process ensures that a dividing cell's DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes. The cycle has checkpoints (also called restriction points), which allow certain genes to check for mistakes and halt the cycle for repairs if something goes wrong.

If a cell has an error in its DNA that cannot be repaired, it may undergo programmed cell death (apoptosis) (illustration). Apoptosis is a common process throughout life that helps the body get rid of cells it doesn't need. Cells that undergo apoptosis break apart and are recycled by a type of white blood cell called a macrophage (illustration). Apoptosis protects the body by removing genetically damaged cells that could lead to cancer, and it plays an important role in the development of the embryo and the maintenance of adult tissues.

Cancer results from a disruption of the normal regulation of the cell cycle. When the cycle proceeds without control, cells can divide without order and accumulate genetic defects that can lead to a cancerous tumor (illustration).

For more information about cell growth and division:The National Institutes of Health's Apoptosis Interest Group provides an introduction to programmed cell death.

The National Cancer Institute offers several publications that explain the growth of canceroustumors. These include What You Need To Know About Cancer-An Overview andUnderstanding Cancer.

Answer 4

By limiting the length of time mRNA is available for translation.

Source: Biology textbook