#Task3 heartbleed lab seed coursehero series

Each set will be incubated at a different temperature. Two sets of respirometers will be assembled during this lab exercise. This allows the respirometer to measure only one variable, the consumption of oxygen gas by living cells. Any CO 2 produced is immediately converted from a gas to a solid and is therefore no longer governed by gas laws. Potassium carbonate ( K 2CO 3 ) is a solid precipitate. KOH absorbs carbon dioxide, following this equation This is accomplished by introducing potassium hydroxide into the device. The respirometer, therefore, has to be able to deal with two simultaneously changing gas volumes. Oxygen gas is being consumed by the respiring cells and carbon dioxide gas is diffusing out of the cells. (PV = nrT)ĭuring cellular respiration, two gases are changing in volume. In order to be able to use a respirometer, you will need to use the ideal gas law, which describes the relationship between temperature, pressure and volume. Respirometers are devices that measure these types of gas volume changes, and therefore provide information about the rate of cellular respiration. Another method is to measure either the oxygen consumption or the carbon dioxide production. One method involves monitoring changes in temperature since the process of respiration is exergonic (produces heat). There are several methods of indirectly measuring the rate of cellular respiration in organisms.

#Task3 heartbleed lab seed coursehero series

Carbon dioxide and water are products of the series of reactions involved in cellular respiration. This process is called cellular respiration which requires nutrient molecules and oxygen.

Cells accomplish this task by breaking down nutrient molecules to generate ATP (adenosine triphosphate), which can then be used to run cellular processes that require energy. Understand the relationships between temperature, pressure and volume.Įach individual cell is responsible for the energy exchanges necessary to sustain its ordered structure. How does the respiration rate of a germinating see differ from that of a dormant seed?.How is respiration rate affected by temperature?.How can repiration rates be measured using a respirometer?.What is the relationship between temperature, volume, and pressure?.