Answer:
The theory given in the science requires the proof. The experimental procedure and observation must be done to make any statements as the scientific theory.
The other scientists can ask question and make controversy about the particular scientific theory. This might occur when the theory affects the moral standards are blended with the phenomena of the nature. The controversy might also occur if its effects the ethics and against the laws of nature.
Cell division is the process essential for growth and repair in multi-cellular organisms.
Injury to the tissue can activate surrounding cells to undergo cell division with the help of mitogens. Mitogens are the chemical substances which help in escalating mitotic divisions in the cells.
They act by activating the signal-transduction pathway which involve mitogen-activated protein kinase (MAPK).
Other possible manner could be the loss of density which could lead to the inactivation of contact inhibition. As there is a loss of cells during the injury, it makes an empty space which could also trigger or activate surrounding cell to start cell division.
In addition, at injury site the flow of blood also increases to transport various nutrients, clotting factors, growth factors etc. These increased nutrition and growth factors also speed up the process of mitosis.
Answer:
phosophlipids containing a phosophate and 2 fatty acid chains connected by a glycerol molecule.
Explanation:
