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Chapter 3.2 Vocabulary

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Term
Definition
Carbohydrate   organic compounds composed of carbon, hydrogen, and oxygen in a ratio of about one carbon atom to two hydrogen atoms to one oxygen atom  
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Monosaccharide   a monomer of a carbohydrate  
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Disaccharide   when two monosaccharaides in living things combine in a condensation reaction to form double sugar  
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Polysaccharide   a complex molecule composed of three or more monosaccharaides  
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Protein   organic compounds composed mainly of carbon, hydrogen, oxygen, and nitrogen  
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Amino Acid   when proteins are formed from the linkage of monomers called this  
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Peptide Bond   when two amino acids form a covalent bond called this  
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Polypeptide   very long chains that amino acids often form  
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Enzyme   RNA or protein molecules that act as biological catalysts, which is essential for the functioning of any cell  
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Substrate   the reactant being catalyzed  
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Active Site   folds of an enzyme  
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Lipid   large, nonpolar organic molecules  
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Fatty Acid   un-branched carbon chains that make up most lipids  
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Phospholipid   two, rather than three fatty acids attached to a molecule of glycerol  
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Wax   a type of structural lipid consisting of a long fatty-acid chain joined to a long alcohol chain  
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Steroid   molecules that are composed of four fused carbon rings with various functional groups attached to them  
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Nucleic Acid   very large and complex organic molecules that store and transfer important information in the cell  
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Deoxyribonucleic Acid (DNA)   contains information that determines the characteristics of an organism and directs its cell activities  
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Ribonucleic Acid (RNA)   stores and transfers information from DNA that is essential for the manufacturing of proteins; can also act as enzymes  
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Nucleotide   thousands of linked monomers that make up the polymers DNA and RNA; made of three main components: phosphate group, five-carbon sugar, and a ring-shaped nitrogenous base  
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Created by: truongm19
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