Biology
...of cells, organisms, species, communities, and ecosystems depends on multitudes of connections between the components of various biological systems. Complex organisms such as humans are internally not a simple design. There are many intricate systems working together and tedious processes that occur inside cells in order for daily functions to be carried out. Biological systems are a lot like a car, certain things need to be present and work in order for everything to function correctly. At the microscopic level, there are special compounds called macromolecules that are connected and involved in almost all bodily systems in order for function to occur, they are like the battery of a car. In fact, it could be said that macromolecules are the most important organic compounds in the body. Everything is so interconnected it is difficult to say what macromolecule is more important than the other, because if any were missing many systems wouldn't be able to function and the organism would die. For example, if something as small as one nucleotide was removed from a DNA sequence, that could completely change a person's quality of life. Then again, if there where many insulin proteins that were denatured for some reason, the persons blood sugar level could become excessively high making this problem potentially life threatening. Macromolecules might play a huge role, but there are other important factors that are connected in the equation to sustain life, such as water's polarity and its ability to create H-bonds. All of these molecules are small but all are connected in the bigger picture. Their responsibilities are parallel to those of fuel or a battery within a vehicle, without them no other parts or systems would function properly.
Water is many molecules that consist of two parts hydrogen and one part oxygen. Water's structure is very important to many...
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