Examlex
During intense physical exercise, human cells and tissues increase their need for oxygen to provide the ATP necessary for work. Why does heart rate have to increase to meet the need for oxygen?
Genes
Units of heredity made up of DNA that carry information for the development, functioning, and reproduction of organisms.
Active
Engaged in movement or participation; not passive.
Inactive
Not engaging in physical activity or not currently in operation.
DNA
Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.
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