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chapter 3 vocab
vocabulary
15
Biology
Undergraduate 1
02/01/2009

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Term
Amino group
Definition
- a chemical group consisting of a nitrogen atom bonded to 2 hydrogen atoms; can act as a base in solutio, accepting a hydrogen ion and acquiring a charge of +1
Term
ATP (Adenosine triphosphate)
Definition
- an adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are hydrolyzed. This energy is used to drive endergonic reactions in cells
Term
Carbonyl group
Definition
– a chemical group present in aldehydes and ketones and consisting of a carbon atom double-bonded to an oxygen atom
Term
Carboxyl group
Definition
– a chemical group present in organic acids and consisting of a single carbon atom double-bonded to an oxygen atom and also bonded to a hydroxyl group
Term
Enantiomers (optical sterioisomers)
Definition
- one of 2 compounds that are mirror images of each other
Term
Functional groups
Definition
- a specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and usually involved in chemical reactions
Term
Geometric isomers
Definition
cis isomers & trans isomers- one of several compounds that have the same molecular formula and covalent arrangements but differ in the spatial arrangements of their atoms owing to the inflexibility of double bonds
Term
Hydrocarbons
Definition
- an organic molecule consisting only of carbon and hydrogen
Term
Hydroxyl group
Definition
- a chemical group consisting of an oxygen atom joined to a hydrogen atom. Molecules possessing this group are soluble in water and are called alcohols
Term
Isomers
Definition
– one of several compounds with the same molecular formula but different structures and therefore different properties.
Term
Methyl group
Definition
- a chemical group consisting of a carbon bonded to 3 hydrogen atoms. They methyl group may be attached to a carbon or to a different atom
Term
Organic chemistry
Definition
- the study of carbon compounds
Term
Phosphate group
Definition
- a chemical group consisting of a phosphorus atom bonded to four oxygen atoms; important in energy transfer
Term
Structural isomers
Definition
- one of several compounds that have the same molecular formula but differ in the covalent arrangements of their atoms
Term
Sulfhydryl group
Definition
- a chemical group consisting of a sulfur atom bonded to a hydrogen atom
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