Term
| what are reactants and products in a chemical reaction? |
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Definition
| reactants are the materials to start and at the end they become and products |
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Term
| in an endothermic reaction, which has more energy: the reactants or the products? |
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Definition
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Term
| what is the energy needed to start a reaction? |
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Definition
| activation energy (energy needed to break existing bonds) |
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Term
what substances speed up chemical reactions?
a. how do they do that? |
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Definition
enzymes or catalysts
a. they decrease the activation energy |
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Term
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Definition
| biological catalysts-usually proteins |
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Term
| what is the substrate of an enzymes? |
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Definition
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Term
| what type of reaction has the products contain less energy than the reactants (cellular respiration as an example)? |
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Definition
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Term
| what is a condensation reaction? |
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Definition
| when maltose is formed form two glucose molecules and water is formed. |
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Term
| what macromolecules contain nitrogen? |
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Definition
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Term
| what macromolecules are not soluble (dissolve) in water? |
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Definition
| lipids, they're non-polar |
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Term
| what macromolecules have CHO and have hydrogen and oxygen in 2:1? |
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Definition
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Term
| what is the best pH for a stomach enzyme? |
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Definition
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Term
| what is the best temperature for human enzymes? |
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Definition
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