Unit 2 Energy Flow Review

What is metabolism?

• The process of photosynthesis in plants

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

• The breakdown of food in the stomach

• The movement of muscles in the body

What happens when a chemical bond is broken?

• Energy is released

• Energy is absorbed

• Energy is created

• Energy is destroyed

According to the law of conservation of energy, what happens to energy in a system?

• It is lost

• It is created

• It changes forms

• It disappears

What is the result of forming a chemical bond?

• Energy is absorbed

• Energy is released

• Energy is lost

• Energy is created

What type of biochemical reaction involves breaking down larger molecules into simpler compounds?

• Anabolic

• Catabolic

• Endergonic

• Activation

Which type of reaction requires consuming energy to build larger molecules from smaller ones?

• Catabolic

• Exergonic

• Anabolic

• Activation

What is the term for the amount of energy needed to start a chemical reaction?

• Exergonic energy

• Activation energy

• Anabolic energy

• Catabolic energy

What are reactants in a chemical reaction?

• Substances that are changed during a chemical reaction

• Substances that are made by a chemical reaction

• Substances that remain unchanged

• Substances that are destroyed

What are products in a chemical reaction?

• Substances that are changed during a chemical reaction

• Substances that are made by a chemical reaction

• Substances that remain unchanged

• Substances that are destroyed

What type of reaction absorbs energy in the form of heat or light?

• Exothermic

• Endothermic

• Combustion

• Neutralization