Unit 3 Enzymes, Biochem Rxns, ATP

Front

What are enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in living organisms by lowering the activation energy required for the reaction.

Front

What is ATP and its role in cells?

Back

ATP (adenosine triphosphate) is the primary energy carrier in cells, providing energy for various cellular processes.

Front

Define endothermic reactions.

Back

Endothermic reactions are chemical reactions that absorb more energy than they release, resulting in a net gain of energy.

Front

What is activation energy?

Back

Activation energy is the minimum amount of energy required to initiate a chemical reaction.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

What is the structure of ATP?

Back

ATP consists of three phosphate groups, a ribose sugar, and an adenine base.

Front

What role do enzymes play in biochemical reactions?

Back

Enzymes facilitate biochemical reactions by lowering the activation energy, thus increasing the reaction rate.

Front

What is the significance of ribose in ATP?

Back

Ribose is a five-carbon sugar that forms the backbone of ATP, linking the adenine base and phosphate groups.

Front

Explain the term 'catalyzed reaction'.

Back

A catalyzed reaction is a chemical reaction that is accelerated by the presence of a catalyst, which is often an enzyme.

Front

What is the function of phosphates in ATP?

Back

Phosphates in ATP store and release energy when they are broken off during cellular processes.