Answer:
Oxygen
Explanation:
Reactants are used to make the products.
The cellular respiration formula is:
oxygen+glucose--> ATP + water +carbon dioxide
The reactants are oxygen and glucose. The products are ATP, water and carbon dioxide.
The gas reactant is oxygen.
Hope this helps! :)
Red blood cells have a flattened disk shape. This relates to their function as this shape increases the surface area to volume ratio for better gas exchange.
Answer:
More Carbon dioxide is removed from the blood and exhaled in the breath
Explanation:
During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it. So, when you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide.
It provides increased efficiency
