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Chemical Compounds in Cells (Elements and Compounds (Elements (An element…
Chemical Compounds in Cells
Elements and Compounds
Elements
An element is any substance that cannot be broken down into simpler substances
Compounds
When two or more elements combine chemically, they form a compound
Organic and Inorganic Compounds
The most important groups of organic compounds found in living things are carbohydrates, lipids, proteins, and nucleic acids
Carbohydrates
A carbohydrate is an energy-rich organic compound made of the elements carbon, hydrogen, and oxygen
Lipids
Fats, oils, and waxes are all lipids
Proteins
Structure of proteins
Proteins are made up of smaller molecules called amino acids
Functions of Proteins
An enzyme is a type of protein that speeds up a chemical reaction in a living thing
Nucleic Acids
Nucleic Acids are very long organic molecules made of carbon, oxygen, hydrogen, nitrogen, and phosphorus
Water and Living Things
Most chemical reactions within cells could not take place without water