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BioCont. - Chapter 5
Macromolecules
Term | Definition |
---|---|
Four kinds of macromolecules | Carbohydrates, proteins, lipids, and nucleic acids |
Dehydration Synthesis (Condensation) Reaction | The building of larger molecules from smaller ones by removing water. Links monomers together to form polymers. |
Hydrolysis Reaction | The breaking of larger molecules through the addition of water to form smaller molecules. |
Monosaccharides | Single sugars (glucose, fructose, galactose) |
Dissaccharides | Two sugars linked together (sucrose, lactose, maltose) |
Polysaccharides | Many sugars put together (glycogen and cellulose) |
Lipids | Hydrophobic molecules (fats, oils, waxes, and steroids) |
Triglycerides | A type of fat that is made of two parts (a glycerol and three fatty acid chains) |
Phospholipids | A special kind of fat with a hydrophobic head and hydrophilic tails (these make up our cell membranes) |
Steroids | A special kind of fat characteristic of four fused rings (cholesterol and hormones such as testosterone) |
Saturated Fatty Acid | A fatty acid that has each carbon atom surrounded by a maximum number of hydrogen atoms (No double bonds) |
Unsaturated Fatty Acid | A fatty acid that has a double bond between at least two carbon atoms |
Amino Acid | Monomer of a protein, characterized by the R-group and linked by peptide bonds |
Proteins/Enzymes | A molecule with a specific shape that allows it to function, made out of many amino acids. |
Denaturation | A change in the environment (pH and temp.) that causes a protein to change shape and function (destroys the protein) |
Nucleic Acids | A molecule made up of nucleotides joined together (Two nucleic acids are DNA and RNA) |
Nucleotide | A nucleic acid monomer made of three parts (A five carbon sugar, a phosphate group, and a nitrogenous base) |
DNA | A nucleic acid containing the bases adenine, thymine, cytosine, and guanine. Double helix in shape. |
RNA | A single stranded nucleic acid that contain the bases uracil (instead of thymine), cytosine, guanine, and adenine. |