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.
Transcription is the process by which the DNA molecule makes an RNA molecule using enzyme RNA polymerase and other proteins. The mRNA is then used to generate proteins by a process called translation which occurs in the cytoplasm. Transcription occurs in the nucleus because DNA cannot leave the nucleus.
An example that shows how organisms are dependent on each other would using a food chain as an example.
• mouse eat grass and drink water ( which is nonliving)
• mouse gets eaten by fox
• then fox then eaten by coyote and the cycle continues
However is one of these organisms have low population it will be difficult for the others. For example if there is a low population of coyotes then the fox population over populate same goes for if fox are low in population then the mouses become over populated hence diseases could spread from the mouses. The organisms must keep each other in check
