Density = mass/volume
X = 10/50
X=.2
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.
Each enzyme is comprised of covalently linked amino acids...enzymes are proteins
Without efficient nutrient absorption, our body won’t function properly leaving us susceptible to deficiencies and disease.
Hope this helps
