Unit 1 terms

Front

acid

Back

A substance that donates hydrogen ions and therefore lowers pH.

Front

adhesion

Back

The attraction between water molecules and molecules of a different substance.

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amino acid

Back

A monomer of a protein.

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base

Back

A substance that absorbs hydrogen ions and therefore raises pH.

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buffer

Back

A solution that resists a change in pH by absorbing or releasing hydrogen or hydroxide ions.

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carbohydrate

Back

A biological macromolecule in which the ratio of carbon to hydrogen to oxygen is 1:2:1; serves as energy sources and structural support in cells.

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cellulose

Back

A polysaccharide that makes up the cell walls of plants and provides structural support.

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chemical bond

Back

An interaction between two or more of the same or different elements that results in the formation of molecules.

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chitin

Back

A type of carbohydrate that forms the outer skeleton of arthropods and the cell walls of fungi.

Front

cohesion

Back

The intermolecular forces between water molecules caused by the polar nature of water; creates surface tension.