Chemical energy is stored in the bonds of

All answers are correct: chemical energy is stored in bonds. However, in the context of cellular biology, answer glucose molecules is probably the teacher's choice.

What are the answers?

The correct answer is:

3. glucose molecules

Chemical energy is stored in the bonds of glucose molecules. Glucose is a type of sugar that is commonly used by living organisms as an energy source through a process called cellular respiration. During cellular respiration, glucose is broken down in the presence of oxygen to release energy in the form of ATP (adenosine triphosphate), which is the primary energy currency in cells. ATP is produced through a series of chemical reactions that break the bonds within the glucose molecule and release stored energy.

The correct answer is 3. glucose molecules.

To arrive at the answer, we need to understand what chemical energy is and how it is stored. Chemical energy refers to the potential energy that is stored in the arrangement of atoms within molecules. When chemical bonds are formed or broken, energy is released or absorbed.

When it comes to the given options, let's go through each of them:

1. Oxygen molecules (O2): Oxygen molecules do not store chemical energy themselves. They can participate in chemical reactions and provide the necessary oxygen for the reaction, but they do not store energy in their bonds.
2. Water molecules (H2O): Similar to oxygen molecules, water molecules do not store chemical energy. They are formed by the bonding of two hydrogen (H) atoms with one oxygen (O) atom, but their bonds do not exhibit energy storage.
3. Glucose molecules (C6H12O6): Glucose is a carbohydrate commonly found in living organisms and serves as a major source of energy. The bonds within glucose molecules contain chemical energy that can be released through various cellular processes like respiration.
4. Carbon dioxide molecules (CO2): Carbon dioxide does not store chemical energy either. It is a byproduct of cellular respiration and other metabolic processes and does not possess high-energy bonds.

Therefore, the correct answer is 3. glucose molecules, as they store chemical energy in their bonds.