There is a chemical reaction that takes place in this lab, O2 + C6H12O6 –> H2O + CO2 + ATP. This represents cellular respiration, the reaction. The reactants are Oxygen and Glucose. The products are water, carbon dioxide, and ATP. This reaction is split into 3 stages, the Glycolysis stage, the Krebs cycle, and the Electron Transport Chain stage. The first stage happens in the cytoplasm, the last two stages are different they take place in the mitochondrion. Although all 3 stages produce a little ATP, there is one stage that makes more than the other and that is the Electron Transport Chain stage.
The cells get the oxygen for cellular respiration from the circulatory and respiratory systems. First oxygen is breathed in from the air by the respiratory system. When breathing in oxygen goes through the mouth and nose, the epiglottis, the trachea and then to the lungs after traveling through the bronchi. Air then travels through the bronchioles and the alveoli. Oxygen is transferred from the alveoli to the blood stream. Oxygen in red blood cells goes around the body. When blood gets to the cell, it gives oxygen and other nutrients to the cell while receiving CO2, something the cell doesn’t want. The CO2 in the blood goes to the alveoli, and then is transferred to the lungs, and is pushed up the trachea, then the epiglottis and finally goes out the mouth.
The respiratory system, the circulatory system, and cellular respiration is related to the lab because the lab tests if more CO2 is exhaled when pulse rate is higher and if males or females have a higher pulse rates after exercising. My hypothesis for the first of two experiments was, if pulse rate increases with exercise, then the level of CO2 in the scientist’s breaths will increase because the scientist will take heavier breaths to get more
Bibliography: Miller, Kenneth R., and Joseph S. Levine. Prentice Hall Biology. Upper Saddle River, NJ: Prentice Hall, 2002. Print.