Lipids molecular weight is less than 800 da , then why lipid is macromolecule?

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Bcos lipids stay interacted with intra molecular adhesion as a large sized molecule

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Lipids as Macromolecules

Lipids are a diverse group of biomolecules that are insoluble in water but soluble in organic solvents. They include fats, oils, waxes, phospholipids, and sterols. While most lipids have a molecular weight of less than 800 daltons (da), it is still appropriate to classify them as macromolecules based on their structural and functional properties. Here is an explanation of why lipids are considered macromolecules:

Structural Complexity
Lipids exhibit a wide range of structural complexity, which sets them apart from smaller molecules. They are composed of long hydrocarbon chains with various functional groups attached, giving them a complex and diverse chemical structure. This complexity contributes to their macromolecular nature.

Large Molar Mass
Although individual lipid molecules may have a molecular weight below 800 da, lipids are often found in large quantities within cells and tissues. When lipids aggregate or form complexes, their combined molar mass can be significant. For example, triglycerides, which are a type of lipid, consist of three fatty acid molecules esterified to a glycerol backbone. The aggregation of multiple triglyceride molecules can result in a high molar mass, qualifying lipids as macromolecules.

Biological Functions
Lipids play essential roles in various biological processes and are involved in energy storage, insulation, cushioning, and cell membrane structure. These functions require lipids to be present in significant quantities, further supporting their classification as macromolecules.

Association with Other Macromolecules
Lipids often associate with other macromolecules, such as proteins and carbohydrates, to form complexes. For instance, lipoproteins are complexes of lipids and proteins that transport lipids in the bloodstream. The association of lipids with other macromolecules emphasizes their macromolecular nature.

Conclusion
Although lipids have a molecular weight below 800 da on an individual basis, their structural complexity, large molar mass in aggregate, biological functions, and associations with other macromolecules contribute to their classification as macromolecules. Understanding lipids as macromolecules helps in comprehending their diverse roles and significance in biological systems.

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Lipids are considered as macromolecules of the having weight less than 800 Dalton because they are not soluble in tri chloro acetic acid ... and are not formed by polymerization like other macromolecules .. but get separated with other macromolecules as they are insoluble therefore lipids are macromolecules although not up to the weight ...

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