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Bio 156 Chapt. 3
molecules of a cell
14
Biology
Undergraduate 1
09/22/2008

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Term
inability to properly break down lactose;produce insufficient amounts of the enzyme lactase
Definition
lactose intolerance
Term
these have the same molecular formula but diff. chemical properties
Definition
isomers
Term
these are inorganic compounds composed of carbon and hydrogen linked by single bonds
Definition
hydrocarbons
Term
carbon is able to form how many (number) covalent bonds
Definition
4
Term
carbon based molecules; chemical compound containing the element carbon and usually synthesized by cells
Definition
organic compound
Term
why doesn't oil mix with water?
Definition
oil is a type of lipid and lipids are hydrophobic (water-fearing)
Term
a____is a group of atoms in a organic molecule that usually participate in chem. reactions and give macromolecules their unique properties
Definition
functional groups
Term
Organic compounds containing hydroxyl groups are called?
Definition
alcohols
Term
amino acids are building blocks of?
Definition
proteins
Term
Large molecules consisting of many identical or similar molecular units strung together. ex:protiens,lipids,nucleic acids and polysaccharides
Definition
macromolecules/polymers
Term
reaction that removes a molecule of H2O
Definition
dehydration synthesis (dehydration reaction)
Term
the results of dehydration synthesis can be reversed by?
Definition
hydrolysis
Term
what serves as the building blocks of polymers?
Definition
monomers
Term
most monosaccharides have molecular formulas that are some multiple of?
Definition
CH2O
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