Answer:
The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions.
Nitric oxide accomplishes this by elevating cGMP levels.
- NO is a distinctive message. It is a gas, although it does dissolve in an aqueous solution.
- It is a free radical with an unshared electron, which will react with thiol groups on proteins to form new complexes.
- Unlike other second messengers, NO doesn't need energy to move inside and outside of cells. It can go where it wants, but it does not travel far because it is a reactive free radical.
- NO acts within the cell that produces it as a second messenger. It operates as a paracrine molecule able to travel 10–20 cell diameters to affect the biology in surrounding cells. It can form complexes with proteins like hemoglobin, glutathione, and other proteins and then separate from those complexes.
Therefore, increasing cGMP levels is necessary.
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The development of multi-cellular organisms begins from a single:::celled zygote, which undergoes rapid cell division to form the blastula. The rapid multiple rounds of cell division are termed cleavage.
Rapid consumption of alcohol in a very short period of time is very dangerous; due to delayed absorption the drinker will not know how really drunk he is and intoxication from that kind of drinking can last for days and even weeks.
Besides, such drinking pattern may make the whole body system to collapse causing death. Such drinking may also lead to alcohol induced psychiatric disorder.