Which of the following is an example of potential energy?

• A. Water rushing over a water fall.
• B. A glucose molecule.
• C. A spring being released and expanding rapidly.
• D. An ant foraging (moving around) for food.

Answer: (B)

Verified step by step guidance

1. Understand the concept of potential energy: Potential energy is the energy stored in an object due to its position or state. It is not related to the object's motion but rather its potential to do work in the future.
2. Identify the characteristics of potential energy in biological systems: In biology, potential energy is often stored in chemical bonds, such as those found in molecules like glucose.
3. Analyze the options given: Consider each option and determine whether it represents stored energy or energy in motion.
4. Evaluate the glucose molecule: Glucose is a molecule that stores energy in its chemical bonds, which can be released during cellular respiration to perform work. This stored energy is an example of potential energy.
5. Compare with other options: Water rushing over a waterfall, a spring being released, and an ant moving around all involve kinetic energy, which is the energy of motion, not potential energy.