Cell Respiration and Metabolic Rate 145 Mouse in a sealed jar with enough air but no food. Experimental Results: Mouse loses weight. Mouse produces water. Air gets heavier. The chemists soon learned that: Mouse Tissue can be represented by the formula for sugar - C6H12O6 Light Air is oxygen - Oz. Water is H2O. Heavy Air is carbon dioxide - CO2. • • The general equation for the metabolic process became: Mouse Tissue + Light Air Water + Heavy Air ? Question 1. Write the molecular formulas below the words in the general equation (above) for metabolism. 2. When radioactive isotopes of oxygen atoms are put into O2 molecules and the mouse is allowed to metabolize in a chamber with that “labeled" oxygen, only the H2O produced by the mouse is radioactive. Based on that evidence, draw dotted lines to show where each atom on the left side of the equation goes to on the right side of the equation. 3. Where does the CO2 that you breathe out specifically come from during metabolism? Draw dotted lines to show this. 4. Where does the O2 that you breathe in specifically go to during metabolism? Draw dotted line to show this.
photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.