Questions: Multiple Select Question Select all that apply Which are examples of physiological work? Building molecules Pumping blood Contracting skeletal muscles Breaking chemical bonds Adhesion of water

The answer is:

• Building molecules
• Pumping blood
• Contracting skeletal muscles

Explanation for each option:

1. Building molecules: This is an example of physiological work because it involves the synthesis of complex molecules from simpler ones, which is a fundamental process in living organisms.

2. Pumping blood: This is an example of physiological work as it involves the heart muscle contracting to circulate blood throughout the body, which is essential for delivering oxygen and nutrients to tissues.

3. Contracting skeletal muscles: This is an example of physiological work because it involves the muscles contracting to produce movement, which is necessary for various bodily functions and activities.

4. Breaking chemical bonds: This is not typically considered physiological work in the context of the body's processes. It is more of a chemical reaction that can occur in various contexts, not necessarily linked to the physiological functions of the body.

5. Adhesion of water: This is a physical property of water and not an example of physiological work. It refers to the tendency of water molecules to stick to other surfaces, which is important in various biological processes but not a direct example of physiological work.

Summary: The examples of physiological work are building molecules, pumping blood, and contracting skeletal muscles.