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Biology
Ch.5 The Molecules of Life
| Question | Answer |
|---|---|
| carbon-based molecules | organic molecules |
| non-carbon based molecules | inorganic molecules |
| two examples of inorganic molecules | oxygen and ammonia |
| organic molecules composed of carbon and hydrogen | hydrocarbon |
| a group of atoms within a molecule that interacts in predictable ways with other molecules | functional group |
| attract water molecules | hydrophilic |
| smaller molecular units | monomer |
| monomers linked together into long chains | polymer |
| What are the 4 main categories life is classified? | carbohydrates, lipids, proteins, and nucleic acids |
| What is the process called when a monomer is added to a chain a water molecule is released? | dehydration reaction |
| What is the process called when cells break bonds between monomers by adding water? | hydrolysis reaction |
| an organic compound made up of sugar molecules | carbohydrate |
| What are carbs made up of | carbon, hydrogen, oxygen |
| simple sugars that contain one sugar unit | monosaccharides |
| examples of monosaccharides | glucose, fructose, galactose |
| sugar molecules are the main supply for | cellular work |
| "double sugar" | disaccharide |
| example of a disaccharide | sucrose |
| long polymer chains made up of simple sugar monomers | polysaccharide |
| examples of polysaccharides | starch. glycogen, cellulose |
| polysaccharide found in plant cells that consists of glucose monomers | starch |
| polysaccharide that is a chain of many glucose monomers | glycogen |
| polysaccharide in plants that protects cells and stiffen the plant preventing it from flopping over | cellulose |
| water avoiding compound | lipid |
| What are lipids made up of? | carbon, hydrogen, oxygen |
| water avoiding molecules | hyrdrophobic |
| a three-carbon backbone that is attached to thee fatty acids | fat |
| a fat in which all three fatty acid chains contain the maximum possible number of hydrogen atoms | saturated fat |
| a fat that contains less than the maximum number of hydrogen atoms in one or more fatty acid chains | unsaturated fat |
| a lipid molecule in which the carbon skeleton forms four fused rings | steroid |
| a steroid that is an essential molecule found in the membranes that surround your cells | cholesterol |
| a polymer constructed from a set of 20 kinds of monomers known as amino acids | protein |
| How are proteins created? | cells link amino acids togethe into a polypeptide |
| a chain linked with amino acids | polypeptide |
| a monomer that consists of a central carbon atom bonded to four partners | amino acid |
| a change in temp, pH, or other quality of the environment can cause a protein to unravel and lose its normal shape | denaturation |
| activates the reactants and triggers a chemical reaction | activation energy |
| How does a chemical reaction start? | weakening chemical bonds int he reactant molecules |
| compounds that speed up chemical reations | catalysts |
| specialized proteins that are main catalysts of chemical reactions in organisms | enzymes |