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Organs are discrete structures consisting of _____ organized…

Organs are discrete structures consisting of _____ organized toward a common function.

Electrons in the _____, or valence shell, determine the chemical properties of an atom.

All proteins consist of chains of amino acids. The basic structure of an amino acid includes a _____.

The _____ structure of a protein consists of the three-dimensional shape of a protein consisting of a single peptide chain.

Buffers are substances that _____ the pH of a solution by reacting with excess hydrogen or hydroxide ions in solution.

_____ have an energy content of approximately 9 kilocalories per gram.

Bases _____ the pH of a solution by increasing the concentration of _____ ions in solution.