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Biochemistry. Module 2. Inorganic vs. Organic. There are 6 essential elements for living things: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur (CHNOPS) Elements combine to make molecules. Molecules are either inorganic or organic:
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Biochemistry Module 2
Inorganic vs. Organic • There are 6 essential elements for living things: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur (CHNOPS) • Elements combine to make molecules. • Molecules are either inorganic or organic: • Inorganic – do not contain the element carbon • Ex. H2O, NaCl, H2SO4 • Organic – contain the element carbon • Ex. C6H12O6, CH4
Acids and Bases Inorganic Compounds contain acids and bases: • Measured on a pH scale Acids Neutral Bases 1 7 14 • Living things regulate their internal environment to maintain homeostasis – a constant internal environment • Living things have buffers in their cells to help regulate pH
Organic Compounds – The Core 4 • Carbohydrates
Organic Compounds – The Core 4 • Lipids
Organic Compounds – The Core 4 • Nucleic Acids
Organic Compounds – The Core 4 • Proteins
Enzymes: A special type of protein • Enzymes are biological catalysts that speed up chemical reactions in cells of living things. • Enzymes do this by lowering the activation energy needed for the reaction to occur.
Enzyme Mediated Pathway Enzymes may put substances together (synthesis) OR may break them apart (decomposition) Substrate Products Enzyme Enzyme – Substrate complex
Enzyme Function • Enzymes fit with their substrates like a lock and key • If an enzyme loses its shape, it will not fit! • An enzyme losing its shape is called denaturing.
Characteristics of Enzymes Enzymes are: • Specific – one enzyme, one substrate • Reusable – not used up in a reaction