In general, the process responsible for the growth and repair of human tissue is the healing process, which takes place in three phases.
1. inflammatory response. Injured tissues release chemicals that draw resources to the area, alert the body that damage has occurred and inhibit function to prevent further injury.
2. Repair phase. Once injured area is walled off and debris removed, construction to replace or repair injured tissue begins. New blood vessels grow in the injured area maximizing transport within tissue.
3. Remodeling phase. Construction of permanent tissue , typically strong scar tissue made from dense network of collagen fibers.
Looking at it from cell level, the process of mitosis is actually taking place during healing.
Mitosis is used for growth and repair and produces diploid cells identical to each other and to the parent cell.
New cells are needed throughout life. These are for growth and replacement of damaged or worn out tissue. The body obtains such through the process of mitosis.
Answer:
The major function of brain is memory and intelligence which makes the human higher animal in the animal kingdom. It performs in hypothalamus and hippocampus of the brain.
Explanation:
The brain is considered the master organ of the human body. The developing brain is one evidence of human evolution. The brain deals with memory and interpretation of different things in our day to day life. It is like the CPU of the computer. The brain connects with different afferent and efferent neurons. These neurons carry information and brain works according to the information. The brain not only controls the nervous system, but it also controls the endocrine function of the body. This makes an information network all over the body. Different parts of the brain perform a different function. The hunger, thirst, temperature and endocrine functions deal with the hypothalamus. The cerebellum and brain stem concerns with sleeping and body balance. The hypothalamus also regulates the endocrine secretion. All the major functions occur in the brain for which makes the human intelligent animal in the animal kingdom.
Answer:
Explanation:
we have three strains.
the first is the wild type which has tryptophan mRNA which gets degraded rapidly and tryptophan synthase which is stable. therefore, in the presence of tryptophan, no new mRNA is formed and whatever tryptophan synthase was present would be diluted out as cells continue to divide.
Strain A has stable mRNA and stable tryptophan synthase. so since the mRNA is present, new enzyme will continue to form from it. However, since no new mRNA is formed, the enzyme activity will get diluted as cells divide, but at a much slower rate than the wild type.
in Strain B , synthase is rapidly degraded and no new mRNA is formed. so the tryptophan synthase activity would decrease drastically.
