Understanding Diffusion in the Human Body

What is the primary function of diffusion in the human body?

• To create energy

• To produce waste products

• To facilitate essential life functions

• To move molecules from low to high concentration

How does oxygen enter the bloodstream from the lungs?

• Through active transport

• Via osmosis

• By diffusion

• Through cellular respiration

What role do red blood cells play in oxygen transport?

• They store oxygen

• They produce oxygen

• They transport oxygen to the rest of the body

• They convert oxygen into carbon dioxide

Where do nutrients diffuse into the bloodstream?

• In the small intestine

• In the large intestine

• In the stomach

• In the esophagus

Why do cells not need to spend energy for diffusion?

• Because diffusion is an active process

• Because diffusion is a passive process

• Because cells have unlimited energy

• Because diffusion is controlled by enzymes