Chapter 2 - Chemical Basics of Life Flashcards Preview

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Flashcards in Chapter 2 - Chemical Basics of Life Deck (7)
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1

Explain Acids

Acids are electrolytes that release hydrogen ions in water

2

Explain bases

Bases are electrolytes that release ions that bond with hydrogen ions

3

Explain buffers

Chemicals that resist ph changes are called buffers.
They combine with hydrogen ions when those ions are excessive and contribute hydrogen ions when those ions are reduced.

4

Define: pH

A measurement of hydrogen ion concentration

5

Define: enzymes

Enzymes are ‘globular proteins’ that promote chemical reactions by lowering the ‘activation energy’ requirements.

6

Define: catalyst

A catalyst is a compound that accelerates a chemical reaction without itself being permanently changed or consumed

7

Functions of enzymes

They make chemical reactions possible and catalyse the reactions that sustain life.
Enzyme molecules are manufactured by cells to promote a specific reaction.
Enzymes make metabolic reactions possible inside cells by controlling the temperature conditions that otherwise would be too mild for them to occur.