Understanding Non-Spontaneous Processes

Mr. Anderson explains non-spontaneous processes, which require external energy to occur. He discusses how energy can be added externally, such as through electricity or sunlight, and how energy coupling with spontaneous processes can drive these reactions. The video covers examples like rechargeable batteries, photosynthesis, and the role of ATP in the body, illustrating how energy is stored and used to perform work.

What is a characteristic of non-spontaneous processes?

• They occur without external energy.

• They are thermodynamically favorable.

• They have a positive Delta G.

• They release energy spontaneously.

Which of the following is an example of using external energy to drive a non-spontaneous process?

• Combining glucose with oxygen.

• Charging a rechargeable battery.

• Breaking down ATP into ADP.

• Muscle contraction.

How can sunlight be used in non-spontaneous processes?

• By storing it in batteries.

• By using it to excite electrons in photosynthesis.

• By directly converting it into thermal energy.

• By using it to break down food molecules.

How do plants contribute to the energy cycle on Earth?

• By using sunlight to convert carbon dioxide and water into glucose.

• By converting oxygen into carbon dioxide.

• By storing energy in the form of ATP.

• By breaking down glucose into energy.

What is the primary function of chloroplasts in photosynthesis?

• To excite electrons using light energy.

• To store energy as ATP.

• To convert glucose into energy.

• To absorb oxygen from the atmosphere.

In the context of energy coupling, what is an exergonic reaction?

• A reaction that absorbs energy.

• A reaction that releases energy.

• A reaction that requires light.

• A reaction that stores energy.

What is the significance of the electron transport chain in photosynthesis?

• It releases energy as heat.

• It stores energy in the form of glucose.

• It excites electrons to higher energy levels.

• It directly converts sunlight into ATP.

What is the role of ATP in energy coupling?

• It stores energy in the form of light.

• It directly converts energy into thermal energy.

• It releases energy when a phosphate group is added.

• It releases energy when a phosphate group is removed.

Which process in the body uses ATP to drive non-spontaneous reactions?

• Direct sunlight absorption.

• Nerve impulse transmission.

• Photosynthesis in plants.

• Thermal energy production.

What happens when ATP is converted to ADP?

• Energy is stored.

• Energy is lost as heat.

• Energy is absorbed.

• Energy is released.