Honors Biology Quiz

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Last updated 6:26 PM on 1/21/25
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12 Terms

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Metabolism

All of the chemical reactions within each cell of an organism.

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Catabolic reactions

Break down larger molecules into simpler compounds, releasing energy (exergonic).

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Anabolic reactions

Build larger molecules from smaller ones, requiring the consumption of energy (endergonic).

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Reactants

Substances that are changed during a chemical reaction.

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Products

Substances that are made by a chemical reaction.

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Endothermic reaction

Absorbs energy, such as photosynthesis.

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Exothermic reaction

Releases energy, such as cellular respiration.

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Photosynthesis equation

6CO2 + 6H2O -> C6H12O6 + 6O2, where light energy is stored as chemical energy in sugar.

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Cellular respiration equation

C6H12O6 + 6O2 -> 6CO2 + 6H2O, where chemical energy in sugar is converted to ATP.

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Enzymes

Mostly proteins that speed up biochemical reactions by lowering activation energy.

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Catalyst

Substances that speed up reactions without being permanently altered.

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Specificity of enzymes

Enzymes are very specialized and bind to specific reactants to catalyze reactions.