Inorganic and Organic Biomolecules: Essential Components of Living and Non-living Things

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Inorganic biomolecules

Essential for non-living things.

  • Water: The most abundant substance found in living things. It makes up about 65% of the human body.
  • Mineral salts: Substances that can be found in living things in the form of dissolved ions, such as sodium ion.

Organic biomolecules

Unique to living things. Structures made up of carbon.

  • Carbohydrates: Made of carbon and water.
  • Lipids: Fats, phospholipids, and cholesterol.
  • Proteins: Chains of amino acids.
  • Nucleic acids: Groups of nucleotides.

The cell: Functions

  • Structural
  • Functional
  • Basic
  • Biological

Prokaryotic cell

  • No nucleus
  • Organelles: Ribosomes
  • Bacteria are prokaryotes
  • Membranes: Cell membrane, cell wall, and bacterial capsule (not always)
  • Flagella and Fimbriae

Eukaryotic cell

  • Nucleus
  • Cell membrane: two layers of phospholipids.
  • Cytoplasm: Hyaloplasm, organelles, and cytoskeleton.

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