Questions: How does the amount of free energy input differ between exergonic and endergonic reactions? Endergonic reactions proceed without the input of additional energy from the environment and exergonic reactions require energy input. Exergonic reactions proceed without the input of additional energy from the environment and endergonic reactions require energy input.

Solution Steps

Exergonic and endergonic reactions are terms used to describe the energy changes in chemical reactions. Exergonic reactions release energy, meaning they proceed with a net release of free energy. In contrast, endergonic reactions require an input of energy to proceed, as they absorb free energy from their surroundings.

The question provides two options regarding the energy input for exergonic and endergonic reactions:

1. Endergonic reactions proceed without the input of additional energy, and exergonic reactions require energy input.
2. Exergonic reactions proceed without the input of additional energy, and endergonic reactions require energy input.

Based on the definitions:

• Exergonic reactions do not require additional energy input as they release energy.
• Endergonic reactions require energy input to proceed.

Thus, the correct statement is that exergonic reactions proceed without the input of additional energy, and endergonic reactions require energy input.

Final Answer