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Matter: Anything that has mass and occupies space, made of elements…

- - - - Molecules (2 atoms bonded together) or compounds (2 or more different elements bonded)
        
        Nucleic acids: monomers for DNA + RNA
        
        DNA: double helix structure(Adenine, Cytosine, Guanine, Thymine)
        
        RNA: intermediate between DNA and proteins(Adenine, Cytosine, Guanine, Uracil)
        
        Lipids: store energy, insulation, hormones
        
        Steroids(cholesterol): hormones(estrogen, testosterone, etc.)
        
        Triglycerides: found in adipose tissue
        
        Phospholipids: cell membranes
        
        Carbs
        
        Monosaccharides: monomers of carbohydrates Ex: Glucose
        
        Disaccharides: 2 monosaccharides Ex: Lactose
        
        Polysaccharides: many monosaccharides Ex: Cellulose(plant cell structure)
        
        Amino acids: building blocks/monomers of proteins(many functions, defense, transport, structure, etc.)
        
        Enzymes: Speed up chemical reactions
        
        Primary structure: amino acid sequence of polypeptide chain
        
        Secondary structure: one or more segments of primary structure folded in specific ways bonded by hydrogen bonds
        
        Tertiary structure: three-dimensional shape of peptide chain, stabilized by hydrogen bonding
        
        Quaternary structure: linking together more than one polypeptide chain in specific
        arrangement, needed for functioning proteins
    - - Important ions for our bodies: Ca2+ for bones, Na+ for body fluid regulation, etc
    - - pH: scale that measures [H+]
  - - - Hydrogen bonds: Intermolecular interaction between a slightly positive hydrogen and slightly positive oxygen/nitrogen