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It is impossible to estimate the age of the universe.
Proteins and Lipids
Essential biomolecules; proteins are polymers of amino acids functioning in structure and enzymes, while lipids are fatty acids and their derivatives, serving as energy storage and cell membrane components.
Microtubules
Cylindrical structures in the cytoplasm of eukaryotic cells, playing roles in cell shape, intracellular transport, and cell division.
Skeletal Muscle Cells
Cylindrical cells that make up skeletal muscle, capable of contracting to facilitate body movement.
Ribosomes
Cellular organelles that carry out protein synthesis by translating messenger RNA into polypeptide chains.
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