Gas exchange. 6.4.1 Distinguish between ventilation, gas exchange and cell respiration. Ventilation is the process of bringing fresh air into the alveoli and removing the stale air. It maintains the concentration gradient of carbon dioxide and oxygen between the alveoli and the blood in the capillaries (vital for oxygen to diffuse into the blood from the alveoli and carbon dioxide out of the blood into the alveoli). Gas exchange is the process of swapping one gas for another. It occurs in the alveoli of the lungs. Oxygen diffuses into the capillaries from the air in the alveoli and carbon dioxide diffuses out of the capillaries and into the air in the alveoli. Cell respiration releases energy in the form of ATP so that this energy can be used inside the cell.
An institute of technology (also: university of technology, polytechnic university, technikon, and technical university) is a type of university which specializes in engineering, technology, Applied Science, and possibly natural sciences. How the terms are used varies from country to country.
Polytechnic University average salary is $55,221, median salary is $49,020 with a salary range from $26,000 to $140,000.Polytechnic University salaries are collected from government agencies and companies. Each salary is associated with a real job position.olytechnic University salary is full-time annual starting salary.