Unit 3: Energy Flow Test 1 MASH

Front

What is the primary source of energy for reattaching a third phosphate to ADP to create ATP?

Back

Usually from carbohydrates.

Front

How does an enzyme affect the activation energy of a reaction?

Back

An enzyme speeds up a reaction by lowering the activation energy.

Front

What are the products in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.

Front

What characterizes an exothermic reaction?

Back

An exothermic reaction releases more energy than it absorbs.

Front

Which macromolecule is broken down first by cells to obtain ATP?

Back

Carbohydrates.

Front

Define ATP (Adenosine Triphosphate).

Back

ATP is the energy currency of the cell, used to store and transfer energy.

Front

What role do enzymes play in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed.

Front

What is activation energy?

Back

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

Front

Explain the difference between exothermic and endothermic reactions.

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

What is the function of carbohydrates in energy production?

Back

Carbohydrates are the primary source of energy for cellular processes.