Front

Oxygen diffuses from the alveolus in the lungs into the blood capillaries as the ______________ of oxygen in the alveolus is higher.

Back

concentration

Front

Oxygen combines with haemoglobin in the red blood cells and forms _________________.

Back

oxyhaemoglobin

Front

Oxyhaemoglobin reaching the body cells

Back

decomposes

Front

Oxygen diffuses from the blood into the body cells as the concentration of oxygen in the blood is ____________.

Back

higher

Front

Carbon dioxide diffuses from body cells to the blood as the concentration of carbon dioxide in the body cells is higher. The blood flows back to the heart and then is pumped to the lungs. Reaching the lungs, carbon dioxide diffuses from the blood capillaries into the alveoli to be ___________________ through the exhaled air.

Back

discharged

Front

Back

oxyhaemoglobin

Front

What process occurs in every living thing, needs oxygen, and gives out carbon dioxide, water, and energy?

Back

Respiration cell